ISDT FD-200 200W 25A Smart LiPo Discharger – 2-8S Bluetooth App Control

The ISDT FD-200 is a dedicated 200W smart battery discharger designed for RC users who need to bring 2S–8S batteries down to a controlled voltage without tying up a conventional balance charger. It supports selectable discharge-current settings from 5A to 25A, Bluetooth control through the isd GO mobile app, adjustable per-cell cutoff voltage and active cooling for sustained discharge operation.

For pilots, racers and RC drivers with large-capacity LiPo batteries, the FD-200 can be particularly useful after a session when packs are still too full for storage. Instead of leaving a charger occupied for a long discharge cycle, the FD-200 provides up to 200W of dedicated discharge power with a compact standalone design.

ISDT FD-200 Specifications

Why Use a Dedicated LiPo Discharger?

Charging receives most of the attention in RC battery management, but storage voltage is also important. If a LiPo battery will not be used for an extended period, leaving it fully charged is generally not the preferred storage condition.

Many balance chargers include a storage function, but charger-based discharging can be relatively slow because their internal discharge circuits are often designed for much lower power than their charging circuits.

The FD-200 is built specifically around the discharge task. With up to 200W of discharge power, it can remove energy from larger RC batteries substantially faster than a low-power internal charger discharge function, subject to battery voltage, selected current and the unit's operating limits.

200W Maximum Discharge Power and Up to 25A

The FD-200 provides five selectable discharge-current settings:

• 5A
• 10A
• 15A
• 20A
• 25A

However, the 25A current rating and 200W power rating are two different limits. The actual discharge current available at a particular battery voltage cannot exceed the FD-200's 200W maximum discharge power.

This is an important distinction when comparing the FD-200 with other LiPo dischargers. Higher current settings are most relevant at lower battery voltages, while higher-cell-count batteries become primarily limited by total wattage.

2S–8S Battery Support

The ISDT FD-200 is specified for batteries from 2S through 8S within its 7–35V operating range. This covers many battery systems used in RC cars, airplanes, helicopters, FPV aircraft and boats.

The selected cell count must match the battery connected to the FD-200. The unit provides error indication when the configured number of cells is too low or too high relative to the detected battery condition.

Bluetooth Control with the isd GO App

The FD-200 can operate directly from its physical controls, but Bluetooth connection to the isd GO app adds more detailed control and monitoring.

According to the official operating instructions, the app allows the user to configure:

• Cutoff voltage: 3.3–3.8V per cell
• Discharge current: 5–25A
• Battery cell count: 2S–8S
• Automatic discharge: On or off

The app also provides a more detailed view of the active discharge process than the onboard LED indicators alone.

How to Pair the FD-200 with Bluetooth

To enter Bluetooth pairing mode, press and hold the left and right buttons on the FD-200 at the same time. The indicator turns blue and flashes while the unit is ready for pairing. Enable Bluetooth on the phone and open the isd GO app to complete the connection.

After a successful connection, the indicator returns to the normal connected state.

No Bluetooth PIN Is Listed in the Official Manual

If you are searching for an ISDT FD-200 Bluetooth PIN, the supplied official user guide does not specify a PIN code for normal pairing. The documented pairing procedure is to place the FD-200 into Bluetooth pairing mode by holding both buttons, then connect through Bluetooth and the isd GO app.

If a phone unexpectedly requests a PIN, avoid guessing random codes. Confirm the app version, Bluetooth state and current ISDT support instructions for the FD-200.

Manual Control Without the App

The FD-200 does not require a phone for basic operation. Its two physical buttons can be used to configure cell count and discharge current directly.

The right button cycles through the supported battery cell counts from 2S to 8S. The left button selects the discharge-current setting, with the indicator positions corresponding to 5A, 10A, 15A, 20A and 25A.

To manually start discharging, long-press either button until the indicator turns green.

During a discharge task, pressing a button twice allows the current or cell-count setting to be changed. The FD-200 resumes operation after the setting change.

LED Indicators Show Current, Cell Count and Operating Status

The front-panel LEDs provide a quick status reference even when the app is not being used.

High-Efficiency Active Cooling

Discharging converts stored battery energy into heat, so cooling is a central part of a high-power discharger design.

The FD-200 uses an aluminum heat-dissipation structure together with active fan cooling. ISDT's product design combines the aluminum housing, internal heat-conduction components and fan-assisted airflow to manage the heat generated during discharge.

Automatic Discharge and Power-Off

When Bluetooth is connected and automatic discharge is enabled, the FD-200 can automatically begin the configured discharge task after the documented standby delay.

After a discharge is completed or the unit remains in standby, the FD-200 automatically powers off after approximately one minute.

This helps simplify repetitive battery-management tasks, although the unit should still remain supervised whenever a battery is connected and being discharged.

BattGO Smart Interconnection

The FD-200 also supports ISDT's BattGO smart interconnection concept when used with compatible BattGO equipment. Supported smart battery information can allow the system to recognize battery parameters and assist with selecting appropriate operating settings.

BattGO functionality should not be assumed for a conventional battery simply because it uses a physically similar connector. Smart battery functions require the appropriate BattGO-compatible battery and data connection.

Using the FD-200 for LiPo Storage Preparation

One of the most practical uses for the FD-200 is bringing batteries down from a relatively high state of charge before storage.

Through the app, the cutoff voltage can be set between 3.3V and 3.8V per cell. Choose a cutoff appropriate for your battery-management goal and battery manufacturer's guidance.

Do not treat the lowest available 3.3V setting as a universal storage target. Lower cutoff settings are simply available operating options; storage voltage should be selected deliberately rather than automatically choosing the lowest value.

ISDT FD-200 Manual

For Bluetooth pairing, LED indicators, manual current selection, cell-count settings, app control and safety instructions, view the ISDT FD-200 User Manual.

ISDT FD-200 App and App Download

The official FD-200 user guide identifies the companion mobile application as isd GO. Use the current official ISDT distribution channel for your mobile platform when installing the app.

Because mobile app download locations and supported versions can change over time, CNHL does not reproduce an outdated third-party download file on this product page. After installation, enable Bluetooth and follow the FD-200 pairing procedure described above.

Who Is the ISDT FD-200 Best Suited To?

• RC users with large-capacity LiPo batteries that take too long to discharge through a conventional charger.
• RC airplane and helicopter pilots returning from the field with multiple partially or fully charged packs.
• RC car and boat users who want a dedicated high-power tool for battery storage preparation.
• Users working with battery systems from 2S through 8S.
• Users who want both physical-button operation and Bluetooth app control.
• Users who understand that actual discharge current depends on both the selected amp setting and the 200W power ceiling.

Compare More ISDT Chargers and Battery Tools

For other ISDT charging, discharging and battery-management equipment, explore the ISDT chargers, dischargers and battery tools available from CNHL.

If you also need a charger for normal charging and balance charging, browse the wider LiPo battery chargers collection.

What to Check Before Buying

• Confirm that the battery is within the FD-200's 2S–8S and 7–35V operating range.
• Remember that 25A is the maximum selectable current, while actual output is also limited to 200W.
• Select the correct battery cell count before beginning the task.
• Choose a cutoff voltage appropriate for the battery and intended purpose.
• Do not block the cooling fan or ventilation openings.
• Operate the discharger on a heat-resistant and non-flammable surface.
• Do not connect damaged, swollen or otherwise questionable batteries.
• Keep the FD-200 supervised while a battery is being discharged.

FAQ

What is the ISDT FD-200 used for?

The FD-200 is a dedicated smart battery discharger. It removes stored energy from a supported 2S–8S battery and can be particularly useful for bringing batteries down to a selected voltage before storage.

Is the ISDT FD-200 a battery charger?

No. The FD-200 is a discharger. It does not replace a proper balance charger for charging LiPo, LiHV or other rechargeable batteries.

Can the FD-200 discharge at 25A?

25A is the highest selectable current setting, but actual discharge current is also limited by the FD-200's 200W maximum power. At higher battery voltages, the power limit means the achievable current will be lower than 25A.

Can the FD-200 discharge an 8S LiPo battery?

Yes. The official specification supports 2S–8S batteries within the 7–35V operating range. At 8S voltage, discharge current will primarily be limited by the 200W maximum power rating.

What app does the ISDT FD-200 use?

The official user guide identifies the mobile app as isd GO. It is used for Bluetooth control, cutoff-voltage settings, discharge-current selection, cell-count selection and automatic discharge control.

How do I connect the FD-200 to Bluetooth?

Press and hold both physical buttons at the same time until the indicator enters the blue flashing pairing state. Enable Bluetooth on your phone, open the isd GO app and complete the connection.

What is the ISDT FD-200 Bluetooth PIN?

The official FD-200 user manual does not specify a Bluetooth PIN for the documented pairing process. Normal pairing is performed by placing the FD-200 into Bluetooth pairing mode and connecting through the isd GO app.

What cutoff voltage can I set in the FD-200 app?

The official manual specifies an adjustable cutoff-voltage range from 3.3V to 3.8V per cell. Select a value appropriate for the battery and your intended storage or discharge objective.

Can I use the FD-200 without the app?

Yes. The onboard buttons can be used to select battery cell count, select discharge current, start the discharge process and return the unit to standby.

Where can I find the ISDT FD-200 manual?

You can view the ISDT FD-200 User Manual for setup, Bluetooth pairing, LED indicators, discharge settings and safety information.

Does the FD-200 turn off automatically?

Yes. According to the official manual, the unit automatically powers off after approximately one minute following discharge completion or while remaining in standby.

Package Includes

• 1 × ISDT FD-200 200W Smart Discharger

Discharging Safety Notice

The FD-200 can generate substantial heat while dissipating battery energy. Always operate it in a cool, well-ventilated area away from flammable objects, and do not block the fan or cooling surfaces.

Verify battery voltage and cell count before connection. Never discharge a damaged, swollen or otherwise unsafe battery, and never leave the FD-200 operating unattended.