The ISDT K2 ZIP is a compact high-power 8S LiPo smart dual charger designed for RC users who want two independent charging channels, built-in AC power and substantially higher output from an external DC source. It combines AC 200W charging with up to DC 500W per channel, charging current up to 20A ×2 and support for standard LiPo batteries from 1S through 8S.
As an AC/DC RC battery charger, the K2 ZIP can operate directly from 100–240V mains power at home or in the workshop, then step up to much higher charging performance when connected to a suitable 10–34V DC source. Its dual-channel architecture, 8S LiPo support, BattAir integration, ISD Link wireless operation and dual USB-C PD outputs make it more than a basic balance charger.
For users looking specifically for an 8S LiPo charger, a compact dual-channel LiPo charger or a versatile charger/discharger for RC cars, aircraft, helicopters, boats and drones, the K2 ZIP offers an unusually broad feature set in a relatively compact platform.
Quick Fit Check:
• Charger type: AC/DC smart dual-channel balance charger/discharger
• AC input: 100–240V
• DC input: 10–34V
• Maximum charging power: AC 200W total / DC 500W ×2
• Charging current: 0.2–20A ×2
• Maximum discharge power: 15W ×2
• Discharge current: 0.2–1.5A ×2
• Maximum balance current: 1.5A/cell
• LiPo / LiFe / Li-ion: 1–8S
• LiHV / ULiHV: 1–7S
• Parallel Task charging: up to 800W / 30A
• USB-C1: PD 65W
• USB-C2: PD 65W
• BattAir smart battery support: Yes
• Wireless operation: ISD Link App
ISDT K2 ZIP Specifications
| Brand |
ISDT |
| Model |
K2 ZIP |
| Product Type |
AC/DC Smart Dual-Channel Balance Charger / Discharger |
| AC Input Voltage |
100–240V |
| DC Input Voltage |
10–34V |
| Maximum DC Input Current |
35A |
| Output Voltage |
DC 1–34V |
| Charging Current |
0.2–20A ×2 |
| Maximum Charging Power |
AC 200W total / DC 500W ×2 |
| Discharge Current |
0.2–1.5A ×2 |
| Maximum Discharge Power |
15W ×2 |
| Maximum Balance Current |
1.5A/cell |
| LiPo Support |
1–8S |
| LiFe / Li-ion Support |
1–8S |
| LiHV / ULiHV Support |
1–7S |
| Pb Support |
1–14S |
| NiMH / NiCd Support |
1–18S |
| Parallel Charging |
Up to 800W / 30A |
| Parallel Discharging |
Up to 30W / 3A |
| USB-C1 |
PD 65W |
| USB-C2 |
PD 65W |
| Smart Battery System |
BattAir supported |
| Wireless App |
ISD Link |
| Abnormal Voltage Alarm |
Supported |
| Incorrect Cell Count Alarm |
Supported |
| Operating Temperature |
0–40°C |
| Storage Temperature |
-20–60°C |
| Dimensions (L × W × H) |
133 × 126 × 57.7mm |
| Weight |
Approx. 776g |
| Stock Number |
ISDTK2ZIPDUALDCAC |
High-Power Independent Dual-Channel Charging
The K2 ZIP is built around two independently controlled charging channels. Each channel can manage its own supported battery task, allowing two batteries to be charged, discharged or prepared for storage during the same session.
When powered from a sufficiently capable external DC source, each channel can deliver up to 500W and 20A. This gives the K2 ZIP a maximum DC charging specification of 500W ×2 across its two independent outputs.
For RC pilots and drivers who regularly prepare multiple batteries, this dual-channel arrangement can significantly reduce charging turnaround compared with working through the same packs one at a time.
500W ×2 explained:
This rating describes two independent channels capable of up to 500W each under suitable DC operating conditions. It does not mean one battery output provides 1000W.
AC 200W or DC 500W ×2
The K2 ZIP provides both AC and DC input, allowing it to work as a convenient desktop charger at home and as a significantly higher-power RC charger when a suitable external DC supply is available.
Connect the charger directly to 100–240V AC power for up to 200W total charging power.
For more demanding batteries, the K2 ZIP accepts a 10–34V DC input. With adequate input power, each channel can provide up to 500W.
DC input requirement: Reaching the charger's higher DC output requires an external power source, wiring and connectors capable of safely supplying the necessary voltage, current and total wattage.
8S LiPo Charger Support on Both Channels
A major advantage of the K2 ZIP is its support for standard LiPo batteries from 1S through 8S. This makes it particularly relevant for users who need an 8S LiPo charger rather than a charger limited to the more common 6S range.
LiFe and Li-ion batteries are also supported from 1S through 8S. LiHV and ULiHV use a different official range and are supported from 1S through 7S.
-
LiPo: 1–8S
-
LiFe: 1–8S
-
Li-ion: 1–8S
-
LiHV / ULiHV: 1–7S
-
Pb: 1–14S
-
NiMH / NiCd: 1–18S
Important: The K2 ZIP's 8S rating applies to standard LiPo, LiFe and Li-ion batteries. LiHV and ULiHV are officially supported only up to 7S.
A Compact RC Charger for Cars, Aircraft, Helicopters, Boats and Drones
The K2 ZIP is not limited to one RC category. Its combination of 8S LiPo support, two independent channels and high DC charging power makes it suitable for batteries used across RC cars, airplanes, helicopters, boats, FPV systems and multirotors.
Users with larger 6S and 8S batteries benefit from the higher-voltage and higher-power capability, while adjustable charging current allows the K2 ZIP to remain useful as an everyday LiPo balance charger for smaller packs as well.
The maximum capability of the charger should never be confused with the permitted charge rate of the battery. Always select charging current according to the battery manufacturer's specification.
20A ×2 Charging: Current and Power Are Separate Limits
Each K2 ZIP channel allows charging current to be adjusted from 0.2A to 20A.
The actual current available to a battery depends on battery voltage, available charger wattage, AC or DC operation, input-source capability and the battery's permitted charge rate. A 20A charger rating therefore does not mean every connected battery should or can be charged at 20A.
This distinction becomes especially important with high-voltage 6S and 8S LiPo packs because maintaining a high charging current at higher battery voltage requires considerably more wattage.
Dual USB-C PD 65W Outputs
The K2 ZIP adds another practical feature that is uncommon on many RC battery chargers: two USB-C Power Delivery outputs.
The official K2 ZIP specification lists:
-
USB-C1: PD 65W
-
USB-C2: PD 65W
This allows compatible USB-C devices such as smartphones, tablets and other supported electronics to be powered or charged from the K2 ZIP, subject to the connected device's supported USB Power Delivery profile and available charger input power.
2.8-Inch IPS Display with Adjustable Viewing Angle
The K2 ZIP uses a large 2.8-inch IPS display designed to make dual-channel charging information easier to read. The screen can be positioned at different viewing angles, helping users check charging data whether the unit is being used on a workbench, pit table or charging station.
The split-screen interface can show information from both channels, while the charger controls provide direct access to CH1 and CH2 task information and settings.
Active Cooling for High-Power Charging
Higher charging power produces more heat, particularly when two channels are operating simultaneously. The K2 ZIP uses an integrated cooling system and ventilated housing to manage operating temperature during demanding charging sessions.
Always keep the cooling inlet and outlet unobstructed and leave sufficient clearance around the charger for airflow.
BattAir Smart Battery Support
The K2 ZIP supports ISDT's BattAir smart battery system. When an appropriate BattAir-compatible battery and connection are used, supported battery information can be read by the charger and relevant parameters can be used during battery setup.
The system settings also provide BattAir functions for the individual charging channels.
BattAir note: Smart battery information requires compatible BattAir hardware and communication. A conventional battery does not gain BattAir functions merely because its main power connector can be physically connected.
ISD Link Wireless Operation
The K2 ZIP can connect wirelessly to the ISD Link App. Once the charger is added through the application, supported charging information can be monitored and compatible task parameters can be managed from a mobile device.
This gives users another way to check the charging process without relying only on the charger's onboard interface.
Parallel Task: Up to 800W / 30A for One Battery
The K2 ZIP includes a Parallel Task that combines the capability of both charger channels for one battery.
The official specification lists parallel charging capability of up to 800W / 30A and parallel discharging capability of up to 30W / 3A.
This operating mode is different from normal dual-channel charging. Under normal operation, CH1 and CH2 independently manage separate batteries. Parallel Task instead combines the charger outputs through the required splitter arrangement to work with one battery.
Parallel Task is not a parallel battery board:
The K2 ZIP Parallel Task combines both charger outputs for one battery. It should not be confused with connecting multiple independent batteries together on a conventional parallel charging board.
Dual Task for Matching Battery Operations
The K2 ZIP also offers a Dual Task mode. This allows the charger to apply the same charging, discharging or storage parameters to batteries connected to both channels.
It can simplify repeated preparation of suitable matched batteries when both packs require the same operating parameters.
15W ×2 Discharging and Battery Storage
Each channel supports discharge current from 0.2A to 1.5A with maximum discharge power of 15W per channel.
The charger also provides a Storage task for supported rechargeable batteries that will not be used immediately.
A separate Destroy / Scrap function can discharge a battery intended for permanent decommissioning toward 0V. This should never be used as a normal storage function.
Destroy mode is permanent: Do not use the battery-destroy function on any pack that you plan to recharge or use again.
CH1 Adjustable DC Power Supply Mode
The K2 ZIP can also use Channel 1 as an adjustable DC power supply for suitable hobby and bench applications.
The official manual specifies an adjustable range of:
-
Output voltage: 2–30V
-
Output current: 1–5A
This is an output function and should not be confused with the separate 10–34V DC input used to power the charger.
LiPo and LiHV Balance Charging
For multi-cell lithium batteries, use the correct battery chemistry program and connect the appropriate balance lead so the K2 ZIP can monitor individual cell voltage during supported charging tasks.
Standard LiPo batteries should use the LiPo program and must not be charged above 4.20V per cell.
LiHV batteries are different. The K2 ZIP provides a dedicated LiHV battery program with a full-charge voltage of up to 4.35V per cell, while ULiHV is listed separately at up to 4.45V per cell. Only use those higher voltage modes with batteries specifically designed for them.
LiHV compatibility notice: A model being described as “6S” or “7S” does not automatically confirm that its ESC or other electronics support the higher fully charged voltage of LiHV or ULiHV batteries. Confirm the model's maximum permitted input voltage before using a higher-voltage charge mode.
Input Power Protection and System Settings
When powered from an external DC source, the K2 ZIP allows the minimum input-voltage protection level and maximum input-power limit to be configured according to the connected power source.
The manual provides a minimum input-voltage protection range of 10–31V and a maximum input-power setting from 100–1200W.
Additional system options include split-screen behavior, USB charging control, BattAir settings, system self-test and CH1/CH2 voltage calibration.
ISDT K2 ZIP Manual
For complete battery programs, charging-current guidance, Dual Task, Parallel Task, DC Power mode, system settings, wireless connection and safety instructions, view the ISDT K2 ZIP User Manual.
Who Is the ISDT K2 ZIP 8S LiPo Charger Best Suited To?
- RC users looking for a compact but capable 8S LiPo charger.
- Users who want two independent charging channels in one charger.
- RC airplane, helicopter, car, boat and FPV users charging 4S, 6S or 8S packs.
- Users who want convenient AC charging at home and higher output from an external DC source.
- Users who need up to 20A charging current per channel where battery and power limits permit.
- Users who value dual USB-C PD charging for additional compatible devices.
- BattAir users who want supported smart battery information.
- Users who want wireless charger monitoring through ISD Link.
Compare More RC and LiPo Battery Chargers
To compare the K2 ZIP with other ISDT AC/DC, DC-only, dual-channel and higher-power charging systems, explore the ISDT chargers, dischargers and battery tools collection at CNHL.
If you want to compare the K2 ZIP with chargers from other brands or find a different power level, channel count or supported battery range, browse the LiPo battery chargers collection.
What to Check Before Buying
- Confirm that your battery chemistry and cell count are supported by the K2 ZIP.
- Standard LiPo, LiFe and Li-ion batteries are supported up to 8S.
- LiHV and ULiHV batteries are officially supported up to 7S.
- Remember that AC charging power is 200W total, while DC operation can provide up to 500W per channel.
- Confirm that your external DC supply can provide sufficient voltage, current and wattage for the desired charging power.
- Do not assume 20A is appropriate for every battery; follow the battery manufacturer's maximum charge rate.
- For multi-cell lithium batteries, confirm polarity and connect the appropriate balance lead.
- If using Parallel Task, follow the connection arrangement described in the official manual.
- Confirm the AC plug or regional adapter supplied with your selected version before ordering.
FAQ
What type of charger is the ISDT K2 ZIP?
The K2 ZIP is an AC/DC smart dual-channel RC battery charger and discharger. It supports two independent battery channels and a wide range of rechargeable battery chemistries.
Can the ISDT K2 ZIP charge 8S LiPo batteries?
Yes. Standard LiPo batteries are officially supported from 1S through 8S, making the K2 ZIP a practical 8S LiPo charger for larger RC battery systems.
Can the K2 ZIP charge 8S LiHV batteries?
No. LiHV and ULiHV are officially listed from 1S through 7S. The 8S rating applies to standard LiPo, LiFe and Li-ion batteries.
How much charging power does the K2 ZIP provide on AC?
The K2 ZIP provides up to 200W total charging power from its 100–240V AC input.
How much power does it provide on DC?
With a sufficiently capable 10–34V external DC source, each channel can provide up to 500W, giving the charger a maximum DC specification of 500W ×2.
What is the maximum charging current?
Each channel supports charging-current settings from 0.2A to 20A. Actual usable current also depends on battery voltage, available charging wattage, input-source capability and the battery manufacturer's charge-rate specification.
Does the ISDT K2 ZIP have USB-C charging?
Yes. The official specification lists USB-C1 PD 65W and USB-C2 PD 65W for compatible USB-C Power Delivery devices.
Does the K2 ZIP support BattAir?
Yes. The charger supports BattAir smart battery information when used with the appropriate BattAir-compatible battery and communication setup.
What app does the ISDT K2 ZIP use?
The K2 ZIP supports wireless operation through the ISD Link App. Supported charger information and tasks can be accessed after the charger is successfully added to the application.
What is Parallel Task?
Parallel Task combines the two charger outputs to provide greater charging capability to one battery. The official specification lists up to 800W / 30A for parallel charging.
Can the K2 ZIP work as a DC power supply?
Yes. Channel 1 can operate as an adjustable DC power output from 2–30V with adjustable current from 1–5A.
Where can I find the ISDT K2 ZIP manual?
View the ISDT K2 ZIP User Manual for charging programs, Parallel Task, Dual Task, DC Power mode, wireless connection and detailed operating instructions.
Package Includes
- 1 × ISDT K2 ZIP Dual Smart Charger
Charging Safety Notice
Always confirm battery chemistry, cell count, polarity and permitted charge rate before starting a charging task. For lithium batteries, use the correct chemistry program and connect the appropriate balance lead whenever required.
Standard LiPo cells must not be charged above 4.20V per cell. LiHV and ULiHV batteries require their dedicated charging modes and must only be charged to the higher voltage when the battery is specifically designed for that chemistry.
Operate the K2 ZIP on a heat-resistant, non-flammable and electrically insulating surface with adequate airflow around the cooling system. Never charge damaged or swollen batteries, and never leave the charger or connected batteries unattended while charging or discharging.
