{"product_id":"isdt-k4-smart-dual-charger","title":"ISDT K4 8S LiPo Smart Dual Charger – AC 400W \/ DC 600W ×2","description":"\u003cp\u003e\u003cstrong\u003eThe ISDT K4 is a high-power 8S LiPo smart dual charger built for demanding RC battery setups.\u003c\/strong\u003e It combines two independently controlled charging channels, a built-in 100–240V AC power system and a high-performance 10–34V DC input in one desktop charger.\u003c\/p\u003e\n\u003cp\u003eOn AC power, the K4 provides up to \u003cstrong\u003e400W total charging power\u003c\/strong\u003e. Connect a sufficiently capable external DC source and each channel can deliver up to \u003cstrong\u003e600W and 20A\u003c\/strong\u003e, giving the charger a maximum DC specification of 600W ×2 across its two independent channels.\u003c\/p\u003e\n\u003cp\u003eStandard LiPo, LiFe and Li-ion batteries are supported from 1S through 8S, making the K4 particularly useful for RC users looking for an \u003cstrong\u003e8S LiPo charger\u003c\/strong\u003e, a high-power \u003cstrong\u003edual-channel LiPo charger\u003c\/strong\u003e, or an AC\/DC RC battery charger capable of handling both everyday charging and larger high-capacity packs.\u003c\/p\u003e\n\u003cdiv style=\"background: #f7f7f7; padding: 14px 16px; margin: 16px 0; border-left: 4px solid #E60073; font-size: 14px; line-height: 1.65;\"\u003e\n\u003cstrong\u003eQuick Fit Check:\u003c\/strong\u003e\u003cbr\u003e • Charger type: AC\/DC smart dual-channel balance charger\u003cbr\u003e • AC input: 100–240V\u003cbr\u003e • DC input: 10–34V\u003cbr\u003e • Maximum charging power: AC 400W total \/ DC 600W ×2\u003cbr\u003e • Charging current: 0.2–20A ×2\u003cbr\u003e • Maximum discharge power: 30W ×2\u003cbr\u003e • Discharge current: 0.2–3A ×2\u003cbr\u003e • Maximum balance current: 1.5A\/cell\u003cbr\u003e • LiPo \/ LiFe \/ Li-ion: 1–8S\u003cbr\u003e • LiHV \/ ULiHV: 1–7S\u003cbr\u003e • Parallel Task charging: up to 800W \/ 35A\u003cbr\u003e • BattAir smart battery support: Yes\u003cbr\u003e • Wireless control: ISD Link App\u003cbr\u003e • CH1 adjustable DC power output: 2–30V \/ 1–5A\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; text-align: left;\"\u003e\u003cimg style=\"width: auto; height: auto; max-width: 100%; display: block;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/001_3a51d4e8-4339-400d-b20d-b2a4a104ca17.png\" alt=\"ISDT K4 8S LiPo smart dual charger with AC 400W and DC 600W x2 charging\" width=\"500\" height=\"500\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eISDT K4 Specifications\u003c\/h2\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 14px 0 20px;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 650px; border-collapse: collapse; font-size: 14px; line-height: 1.5;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34%; padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eISDT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eK4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eAC\/DC Smart Dual-Channel Balance Charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eAC Input Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e100–240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eDC Input Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e10–34V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eDC 1–34V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eMaximum DC Input Current\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e45A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eCharging Current\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e0.2–20A ×2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eMaximum Charging Power\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eAC 400W total \/ DC 600W ×2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eDischarge Current\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e0.2–3A ×2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eMaximum Discharge Power\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e30W ×2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eMaximum Balance Current\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e1.5A\/cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eLiPo Support\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e1–8S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eLiFe \/ Li-ion Support\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e1–8S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eLiHV \/ ULiHV Support\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e1–7S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003ePb Support\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e1–14S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eNiMH \/ NiCd Support\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e1–18S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eParallel Charging\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eUp to 800W \/ 35A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eParallel Discharging\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eUp to 60W \/ 3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eCH1 DC Power Output\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e2–30V \/ 1–5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eSmart Battery System\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eBattAir supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eWireless App\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eISD Link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eFirmware Interface\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eUSB-C upgrade port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e0–40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e-20–60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eDimensions (L × W × H)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003e176 × 183 × 57mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eApprox. 1230g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #E60073; color: #fff; font-weight: bold;\"\u003eStock Number\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #ddd; background: #f2f2f2;\"\u003eISDTK4DCAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eHigh-Power Independent Dual-Channel Charging\u003c\/h2\u003e\n\u003cp\u003eThe K4 is built around two independently controlled charging channels, allowing two supported batteries to run separate charging, discharging or storage tasks at the same time.\u003c\/p\u003e\n\u003cp\u003eWith a sufficiently capable external DC power source, each channel can provide up to \u003cstrong\u003e600W of charging power and 20A charging current\u003c\/strong\u003e. This gives the K4 a maximum DC specification of \u003cstrong\u003e600W ×2\u003c\/strong\u003e across its two independent outputs.\u003c\/p\u003e\n\u003cp\u003eFor RC pilots, racers and drivers who routinely prepare multiple large packs, this dual-channel architecture can reduce the time spent waiting for one battery to finish before beginning the next task.\u003c\/p\u003e\n\u003cdiv style=\"margin: 20px 0; text-align: left;\"\u003e\u003cimg style=\"width: auto; height: auto; max-width: 100%; display: block;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/004_455e0c7c-a7e4-498f-aa30-11f1c5b838d3.png\" alt=\"ISDT K4 high power dual channel LiPo charger with up to 600W and 20A per channel\" width=\"500\" height=\"500\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"background: #f7f7f7; padding: 14px 16px; margin: 16px 0; border-left: 4px solid #E60073; font-size: 14px; line-height: 1.65;\"\u003e\n\u003cstrong\u003e600W ×2 explained:\u003c\/strong\u003e\u003cbr\u003e This specification describes two independent channels capable of up to 600W each under suitable DC operating conditions. It does not mean one battery output provides 1200W.\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eAC 400W or DC 600W ×2\u003c\/h2\u003e\n\u003cp\u003eThe K4 can operate directly from a \u003cstrong\u003e100–240V AC mains source\u003c\/strong\u003e, making it practical as a self-contained RC charger for home, workshop or pit use without requiring a separate external DC supply.\u003c\/p\u003e\n\u003cp\u003eIn AC mode, the charger provides up to \u003cstrong\u003e400W total charging power\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor higher-output charging, connect the K4 to an appropriate \u003cstrong\u003e10–34V DC power source\u003c\/strong\u003e. DC operation allows the charger to deliver up to 600W on each independent channel when sufficient input power is available.\u003c\/p\u003e\n\u003cdiv style=\"margin: 20px 0; text-align: left;\"\u003e\u003cimg style=\"width: auto; height: auto; max-width: 100%; display: block;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/003_50f0a7a4-40cc-4149-b56c-002f367c6d7d.png\" alt=\"ISDT K4 AC DC LiPo charger with 100-240V AC input \" width=\"500\" height=\"500\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0; text-align: left;\"\u003e\u003cimg style=\"width: auto; height: auto; max-width: 100%; display: block;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/002_1fd89975-ea6f-4e3b-97da-321e8ae33a45.png\" alt=\"ISDT K4 AC DC LiPo charger with 10-34V DC input\" width=\"500\" height=\"500\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8f8; padding: 14px 16px; margin: 16px 0; border-left: 4px solid #E60073; font-size: 14px; line-height: 1.65;\"\u003e\n\u003cstrong\u003eDC power requirement:\u003c\/strong\u003e A high-power DC charger can only deliver the power supplied to it. Reaching 600W per channel requires an external DC source, wiring and connectors capable of safely supporting the required voltage, current and total wattage.\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003e8S LiPo Charger Support on Both Independent Channels\u003c\/h2\u003e\n\u003cp\u003eOne of the K4's most important advantages is support for \u003cstrong\u003estandard LiPo batteries from 1S through 8S\u003c\/strong\u003e. Both channels are designed to work independently with supported battery tasks, making the K4 particularly relevant for users who have moved beyond common 4S and 6S systems and need a true \u003cstrong\u003e8S LiPo charger\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe K4 also supports LiFe and Li-ion batteries from 1S through 8S. LiHV and ULiHV batteries use a different official cell-count range and are supported from 1S through 7S.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiPo:\u003c\/strong\u003e 1–8S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiFe:\u003c\/strong\u003e 1–8S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLi-ion:\u003c\/strong\u003e 1–8S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiHV \/ ULiHV:\u003c\/strong\u003e 1–7S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePb:\u003c\/strong\u003e 1–14S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNiMH \/ NiCd:\u003c\/strong\u003e 1–18S\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin: 20px 0; text-align: left;\"\u003e\u003cimg style=\"width: auto; height: auto; max-width: 100%; display: block;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/005_e6f2c54f-899c-42de-9356-b75a8b513a57.png\" alt=\"ISDT K4 8S LiPo charger with two independent battery outputs and balance connections\" width=\"500\" height=\"500\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8f8; padding: 14px 16px; margin: 16px 0; border-left: 4px solid #E60073; font-size: 14px; line-height: 1.65;\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e The K4's 8S specification applies to standard LiPo, LiFe and Li-ion batteries. The official K4 documentation lists LiHV and ULiHV support only up to 7S.\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eA High-Power RC Charger for Cars, Aircraft, Helicopters and Boats\u003c\/h2\u003e\n\u003cp\u003eThe ISDT K4 is designed as a versatile \u003cstrong\u003eRC battery charger\u003c\/strong\u003e rather than being limited to one type of vehicle. Its combination of dual independent channels, high charging power and 8S LiPo support makes it practical across a wide range of demanding RC applications.\u003c\/p\u003e\n\u003cp\u003eRC airplane and helicopter pilots can prepare multiple large flight packs during the same charging session, while RC car and boat users can charge high-capacity 4S, 6S or 8S LiPo batteries without being restricted to the power levels common on compact entry-level chargers.\u003c\/p\u003e\n\u003cp\u003eThe K4 can also be used with smaller supported batteries, so its higher maximum output does not prevent it from functioning as an everyday \u003cstrong\u003eLiPo balance charger\u003c\/strong\u003e. Charging current should always be selected according to the connected battery rather than simply using the charger's maximum capability.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003e20A ×2 Charging: Current and Wattage Work Together\u003c\/h2\u003e\n\u003cp\u003eEach K4 channel supports charge-current settings from \u003cstrong\u003e0.2A to 20A\u003c\/strong\u003e. However, the 20A rating is a current ceiling, not a guarantee that 20A will be available with every battery.\u003c\/p\u003e\n\u003cp\u003eBattery voltage, available charging wattage, AC or DC operating mode, input-source capability and the battery manufacturer's charge-rate limit all affect the practical current that can be used.\u003c\/p\u003e\n\u003cp\u003eThis becomes especially important when charging large 6S and 8S packs. As battery voltage rises, more wattage is required to maintain the same charging current.\u003c\/p\u003e\n\u003cdiv style=\"background: #f7f7f7; padding: 14px 16px; margin: 16px 0; border-left: 4px solid #E60073; font-size: 14px; line-height: 1.65;\"\u003e\n\u003cstrong\u003eDo not select charge current from charger capability alone:\u003c\/strong\u003e\u003cbr\u003e Even if the K4 can provide a high charging current, the connected battery must also be rated for that charge rate.\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eLiPo and LiHV Balance Charging\u003c\/h2\u003e\n\u003cp\u003eFor multi-cell lithium batteries, connect the correct balance lead and select the appropriate battery chemistry before starting a charging task.\u003c\/p\u003e\n\u003cp\u003eStandard LiPo batteries should use the LiPo charging program and must not be charged above \u003cstrong\u003e4.20V per cell\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eLiHV batteries require the dedicated LiHV program when charging above normal LiPo voltage. Only use the higher LiHV full-charge voltage when the battery itself is specifically designed for LiHV operation.\u003c\/p\u003e\n\u003cdiv style=\"background: #fff8f8; padding: 14px 16px; margin: 16px 0; border-left: 4px solid #E60073; font-size: 14px; line-height: 1.65;\"\u003e\n\u003cstrong\u003eLiHV system check:\u003c\/strong\u003e A vehicle or aircraft being described as “6S” or “7S” does not automatically confirm that its ESC or onboard electronics support the higher fully charged voltage of a LiHV pack. Confirm the model's maximum input voltage before using a full LiHV charge.\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eBattAir Intelligent Battery Interconnection\u003c\/h2\u003e\n\u003cp\u003eThe K4 supports ISDT's \u003cstrong\u003eBattAir intelligent battery information system\u003c\/strong\u003e. With a compatible BattAir battery setup, the charger can access supported battery information and use that data to assist with charging configuration.\u003c\/p\u003e\n\u003cp\u003eThis can reduce repeated manual setup when charging compatible batteries within the BattAir ecosystem.\u003c\/p\u003e\n\u003cdiv style=\"margin: 20px 0; text-align: left;\"\u003e\u003cimg style=\"width: auto; height: auto; max-width: 100%; display: block;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/007_ae8f9c61-52d2-4803-b2c5-a4abd7ced20f.png\" alt=\"ISDT K4 smart dual charger with BattAir intelligent battery information interconnection\" width=\"500\" height=\"500\"\u003e\u003c\/div\u003e\n\u003cp\u003eBattAir data functions require the appropriate compatible battery and communication hardware. A conventional battery does not gain smart-data capability simply because its main power connector can be physically connected to the charger.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eParallel Task: Up to 800W \/ 35A for One Battery\u003c\/h2\u003e\n\u003cp\u003eThe K4 includes a \u003cstrong\u003eParallel Task\u003c\/strong\u003e mode that combines the capability of both charging channels for one battery.\u003c\/p\u003e\n\u003cp\u003eThe official specification lists Parallel Task charging capability of up to \u003cstrong\u003e800W and 35A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is different from the normal DC 600W ×2 specification. In normal dual-channel operation, two independent channels can manage two battery tasks. In Parallel Task mode, the two charger outputs are combined to provide greater capability to a single battery through the required connection arrangement.\u003c\/p\u003e\n\u003cdiv style=\"background: #f7f7f7; padding: 14px 16px; margin: 16px 0; border-left: 4px solid #E60073; font-size: 14px; line-height: 1.65;\"\u003e\n\u003cstrong\u003eParallel Task is not the same as a conventional parallel charging board:\u003c\/strong\u003e\u003cbr\u003e The K4 Parallel Task combines the charger channels for \u003cstrong\u003eone battery\u003c\/strong\u003e. It should not be confused with connecting multiple separate batteries together on a parallel board.\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eDual Task for Matched Charging Operations\u003c\/h2\u003e\n\u003cp\u003eThe K4 also includes a \u003cstrong\u003eDual Task\u003c\/strong\u003e function. This allows the same configured charging, discharging or storage parameters to be applied to batteries connected to both channels.\u003c\/p\u003e\n\u003cp\u003eIt can simplify battery preparation when two suitable packs require the same operating settings while still using the K4's separate physical channel connections.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003e30W ×2 Discharging and Storage Functions\u003c\/h2\u003e\n\u003cp\u003eEach channel supports discharge current from \u003cstrong\u003e0.2A to 3A\u003c\/strong\u003e, with up to \u003cstrong\u003e30W of discharge power per channel\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe K4 also includes a Storage task for bringing supported rechargeable batteries toward an appropriate storage condition when they will not be used immediately.\u003c\/p\u003e\n\u003cp\u003eWhen Parallel Task is used for discharging, the official specification lists up to \u003cstrong\u003e60W \/ 3A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA separate battery-destroy or decommissioning task is intended only for batteries that will be permanently removed from service and should not be used as a normal storage function.\u003c\/p\u003e\n\u003cdiv style=\"background: #fff8f8; padding: 14px 16px; margin: 16px 0; border-left: 4px solid #E60073; font-size: 14px; line-height: 1.65;\"\u003e\n\u003cstrong\u003eBattery disposal mode is permanent:\u003c\/strong\u003e Do not use the battery-destroy function on a pack that you intend to recharge or use again.\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eCH1 Adjustable DC Power Supply Mode\u003c\/h2\u003e\n\u003cp\u003eChannel 1 can also operate as an adjustable DC power output for suitable hobby and bench applications.\u003c\/p\u003e\n\u003cp\u003eThe K4 documentation specifies an adjustable output range of:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 2–30V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent:\u003c\/strong\u003e 1–5A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a DC \u003cstrong\u003eoutput\u003c\/strong\u003e function and should not be confused with the separate external DC input used to power the K4 charger itself.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eFull-Color Dual-Channel Charging Display\u003c\/h2\u003e\n\u003cp\u003eThe central color display provides information for both charging channels. Depending on the active task, the K4 can display values such as charging current, battery voltage, elapsed time, capacity and other battery-management information.\u003c\/p\u003e\n\u003cp\u003eDuring supported balance-charging tasks, the charger can also display individual cell voltage and cell internal-resistance information, giving the user a clearer view of pack behavior during charging.\u003c\/p\u003e\n\u003cdiv style=\"margin: 20px 0; text-align: left;\"\u003e\u003cimg style=\"width: auto; height: auto; max-width: 100%; display: block;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/006_b6321b8a-13a2-44b4-b997-d5953665ce7e.png\" alt=\"ISDT K4 dual channel RC charger display showing current voltage battery capacity and cell information\" width=\"500\" height=\"500\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eISD Link App Wireless Control\u003c\/h2\u003e\n\u003cp\u003eThe K4 supports wireless connection through the \u003cstrong\u003eISD Link App\u003c\/strong\u003e. After the charger is added to the app and the wireless connection is completed, supported charger information and battery tasks can be managed from a compatible mobile device.\u003c\/p\u003e\n\u003cp\u003eIf you are searching for the \u003cstrong\u003eISDT K4 app\u003c\/strong\u003e, use the current ISDT-supported ISD Link distribution channel rather than an unofficial or outdated third-party installation file.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eISDT K4 Firmware and Firmware Updates\u003c\/h2\u003e\n\u003cp\u003eThe K4 includes a dedicated \u003cstrong\u003eUSB-C upgrade port\u003c\/strong\u003e for supported firmware servicing.\u003c\/p\u003e\n\u003cp\u003eIf you are looking for an \u003cstrong\u003eISDT K4 firmware update\u003c\/strong\u003e, only install firmware intended specifically for the K4. Firmware for another ISDT charger should not be used simply because the products share similar menu structures or charging functions.\u003c\/p\u003e\n\u003cp\u003eThe system also includes functions such as self-test, calibration and system information for maintaining supported charger settings.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eISDT K4 Calibration\u003c\/h3\u003e\n\u003cp\u003eThe K4 manual documents calibration functions for supported \u003cstrong\u003einput voltage, output voltage and balance voltage\u003c\/strong\u003e. Calibration should only be performed when appropriate and according to the official K4 procedure rather than through undocumented adjustments.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eISDT K4 Manual\u003c\/h2\u003e\n\u003cp\u003eFor complete setup instructions, supported battery programs, charging parameters, Dual Task, Parallel Task, DC Power mode, wireless connection, calibration and operating safety, view the \u003ca style=\"color: #e60073; text-decoration: underline; font-weight: bold;\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/ISDT_K4_Manual.pdf?v=1788335922\"\u003eISDT K4 User Manual\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eWho Is the ISDT K4 8S LiPo Charger Best Suited To?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRC users looking for a high-power \u003cstrong\u003e8S LiPo charger\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003ePilots and drivers who regularly charge large-capacity 6S and 8S RC batteries.\u003c\/li\u003e\n\u003cli\u003eUsers who want a \u003cstrong\u003edual-channel LiPo charger\u003c\/strong\u003e for two independent battery tasks.\u003c\/li\u003e\n\u003cli\u003eLarge RC airplane and helicopter users preparing multiple flight packs during the same session.\u003c\/li\u003e\n\u003cli\u003eRC car and boat users who want up to 20A per charging channel where the battery and available wattage permit.\u003c\/li\u003e\n\u003cli\u003eUsers who want convenient AC charging at home plus substantially more power from a suitable external DC source.\u003c\/li\u003e\n\u003cli\u003eBattAir users who want supported smart battery information.\u003c\/li\u003e\n\u003cli\u003eUsers who want wireless charger monitoring and task control through ISD Link.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eCompare More RC and LiPo Battery Chargers\u003c\/h2\u003e\n\u003cp\u003eTo compare the K4 with other ISDT AC\/DC, DC-only, dual-channel and high-power charging systems, explore the \u003ca style=\"color: #e60073; text-decoration: underline; font-weight: bold;\" href=\"https:\/\/chinahobbyline.com\/collections\/isdt-chargers\"\u003eISDT chargers, dischargers and battery tools\u003c\/a\u003e collection at CNHL.\u003c\/p\u003e\n\u003cp\u003eIf you want to compare the K4 with chargers from other brands or find a different power level, channel count or supported battery range, browse the \u003ca style=\"color: #e60073; text-decoration: underline; font-weight: bold;\" href=\"https:\/\/chinahobbyline.com\/collections\/lipo-battery-chargers\"\u003eLiPo battery chargers\u003c\/a\u003e collection.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eWhat to Check Before Buying\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm that your battery chemistry and cell count are supported by the K4.\u003c\/li\u003e\n\u003cli\u003eFor standard LiPo, LiFe and Li-ion packs, support extends to 8S.\u003c\/li\u003e\n\u003cli\u003eFor LiHV and ULiHV packs, the official K4 specification extends to 7S.\u003c\/li\u003e\n\u003cli\u003eRemember that AC charging power is 400W total, while DC operation can provide up to 600W per channel.\u003c\/li\u003e\n\u003cli\u003eConfirm that the external DC power supply can actually support the intended charger load.\u003c\/li\u003e\n\u003cli\u003eDo not assume 20A is available at every battery voltage or with every battery.\u003c\/li\u003e\n\u003cli\u003eAlways follow the battery manufacturer's permitted charging rate.\u003c\/li\u003e\n\u003cli\u003eFor multi-cell lithium batteries, connect the correct balance lead and confirm polarity before starting.\u003c\/li\u003e\n\u003cli\u003eIf using Parallel Task, follow the required connection arrangement described by ISDT.\u003c\/li\u003e\n\u003cli\u003eConfirm that the AC power cable or regional plug supplied with your selected version matches your local mains outlet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eWhat type of RC charger is the ISDT K4?\u003c\/h3\u003e\n\u003cp\u003eThe ISDT K4 is a high-power AC\/DC smart dual-channel RC battery charger. It supports two independent battery tasks and is designed for a wide range of RC car, aircraft, helicopter and boat batteries.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eIs the ISDT K4 a dual-channel LiPo charger?\u003c\/h3\u003e\n\u003cp\u003eYes. The K4 has two independently controlled charging channels. With a suitable DC input source, each channel can provide up to 600W and 20A within the charger's operating limits.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eIs the ISDT K4 a good charger for 8S LiPo batteries?\u003c\/h3\u003e\n\u003cp\u003eThe K4 officially supports standard LiPo batteries from 1S through 8S, and its high-power DC mode makes it particularly useful for larger 8S packs. Each channel supports up to 600W and 20A on DC input, although actual charging current depends on battery voltage, available input power and the battery manufacturer's permitted charge rate.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eCan the K4 charge 8S LiHV batteries?\u003c\/h3\u003e\n\u003cp\u003eNo. The official specification lists LiHV and ULiHV support from 1S through \u003cstrong\u003e7S\u003c\/strong\u003e. The 1–8S specification applies to standard LiPo, LiFe and Li-ion batteries.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eHow much power does the ISDT K4 provide on AC?\u003c\/h3\u003e\n\u003cp\u003eThe K4 provides up to \u003cstrong\u003e400W total charging power\u003c\/strong\u003e when operated from a compatible AC mains source.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eHow much power does the K4 provide on DC?\u003c\/h3\u003e\n\u003cp\u003eWith an appropriately rated external DC source, the K4 can provide up to \u003cstrong\u003e600W on each independent channel\u003c\/strong\u003e, giving a maximum specification of 600W ×2.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eWhat is the maximum charging current?\u003c\/h3\u003e\n\u003cp\u003eEach channel supports charging-current settings from 0.2A up to \u003cstrong\u003e20A\u003c\/strong\u003e. Actual available current is also limited by battery voltage, available wattage, input-source capability and battery charge-rate limits.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eWhat is Parallel Task on the ISDT K4?\u003c\/h3\u003e\n\u003cp\u003eParallel Task combines both charging outputs to provide greater charging capability to \u003cstrong\u003eone battery\u003c\/strong\u003e. The official specification lists up to 800W \/ 35A for parallel charging. This is different from using a conventional parallel board to connect several batteries together.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eWhat is Dual Task?\u003c\/h3\u003e\n\u003cp\u003eDual Task allows the same configured charging, discharging or storage parameters to be applied to batteries connected to both K4 channels.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eCan the ISDT K4 work as a DC power supply?\u003c\/h3\u003e\n\u003cp\u003eYes. Channel 1 can operate as an adjustable DC power output with voltage from \u003cstrong\u003e2–30V\u003c\/strong\u003e and current from \u003cstrong\u003e1–5A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eWhat app does the ISDT K4 use?\u003c\/h3\u003e\n\u003cp\u003eThe K4 uses the \u003cstrong\u003eISD Link App\u003c\/strong\u003e for supported wireless monitoring and charger task control.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eCan the ISDT K4 firmware be updated?\u003c\/h3\u003e\n\u003cp\u003eYes. The charger includes a USB-C upgrading port for supported firmware servicing. Only use firmware intended specifically for the ISDT K4.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 15px; font-weight: bold; margin: 14px 0 8px; color: #000;\"\u003eWhere can I find the ISDT K4 manual?\u003c\/h3\u003e\n\u003cp\u003eView the \u003ca style=\"color: #e60073; text-decoration: underline; font-weight: bold;\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/ISDT_K4_Manual.pdf?v=1788335922\"\u003eISDT K4 User Manual\u003c\/a\u003e for battery programs, charging parameters, Parallel Task, Dual Task, wireless setup, calibration and operating instructions.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003ePackage Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × ISDT K4 Smart Dual Charger\u003c\/li\u003e\n\u003cli\u003eAC power cable \/ regional mains connection as supplied with the selected version\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eCharging Safety Notice\u003c\/h2\u003e\n\u003cp\u003eAlways confirm battery chemistry, cell count, polarity and permitted charge rate before beginning a charging task. Do not charge primary non-rechargeable batteries or damaged, swollen or otherwise unsafe rechargeable batteries.\u003c\/p\u003e\n\u003cp\u003eFor multi-cell lithium batteries, use the correct balance connection and appropriate chemistry program. Standard LiPo cells must not be charged above 4.20V per cell. LiHV batteries require the correct LiHV charging mode when using a higher full-charge voltage.\u003c\/p\u003e\n\u003cp\u003eOperate the K4 in a cool, well-ventilated area on a heat-resistant, non-flammable and electrically insulating surface. Do not obstruct the cooling vents, and \u003cstrong\u003enever leave the charger or connected batteries unattended while charging or discharging\u003c\/strong\u003e.\u003c\/p\u003e","brand":"ChinaHobbyLine","offers":[{"title":"Global \/ US Plug","offer_id":50327009788118,"sku":"ISDTK4DCAC-US-PLUG GL","price":229.99,"currency_code":"USD","in_stock":true},{"title":"Global \/ EU Plug","offer_id":50327009820886,"sku":"ISDTK4DCAC-EU-PLUG GL","price":229.99,"currency_code":"USD","in_stock":true},{"title":"Global \/ UK Plug","offer_id":50327009853654,"sku":"ISDTK4DCAC-UK-PLUG GL","price":229.99,"currency_code":"USD","in_stock":true},{"title":"Global \/ AU Plug","offer_id":50327009886422,"sku":"ISDTK4DCAC-AU-PLUG GL","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/07_56fb506a-08bc-4833-b5a2-a4bc76f492a5.png?v=1788338943","url":"https:\/\/chinahobbyline.com\/id\/products\/isdt-k4-smart-dual-charger","provider":"ChinaHobbyLine","version":"1.0","type":"link"}