Princes FPV Drones Project (June, 2025)

First of all, I wanted to show how easy it is to disassemble a DJI FPV battery.

Please follow the steps below:

The first step was opening the battery case without damaging it. It won’t open after removing the two obvious screws. In addition to four clips, a double-sided tape holds the battery cover in place.

After using gentle heat, the sticky tape will soften, making disassembling immensely easier.

After removing the cover, it was still not possible to remove the control board and the LiPo cells. The cells are stuck to the bottom of the housing with double-sided adhesive tape. However, with a bit of heat and patience, the cells and control board can be easily removed.

A DJI FPV drone BMS board, or Battery Management System board, is a crucial component that manages and protects the drone’s battery. It monitors voltage, current, and temperature of each battery cell, ensuring safe and efficient charging and discharging. The BMS board also balances the charge across cells and communicates battery status to the drone’s flight controller. 

Here is the outer case.

This is a view of inside the case.

This is not a destructible disassembly; the cover can be snapped back on and reassembled if so desired.

Here are the outer case components of the DJI FPV drone battery.

Here are the outer case components of the DJI FPV drone battery.

Here are the outer case components of the DJI FPV drone battery.

Here is the BMS board and the Power management board.

Here each of the 6 Lipo cells that make up the DJI FPV drone battery.

The BMS board uses sensors to track voltage, current, and temperature of each cell within the battery pack. The BMS board is shown here removed from the battery.

The BMS board redistributes energy between cells to ensure they are all charged to the same level, maximizing battery capacity and lifespan. 

I soldered XT60 connectors to the main BMS Power wires and JST-XH connectors to the balance wires.

I soldered XT60 connectors to the battery wires and JST-XH connectors to the balance wires.

I soldered XT60 connectors to the battery wires and JST-XH connectors to the balance wires.

Hooked up the BMS board to the original battery.

All the lights lit up as normal.

I hooked it up to the DJI FPV drone, and the patient survived. Then, I tested the modified battery set up with the drone. Everything worked fine. I was able to turn on the drone and even start the motors. Next, I did a quick hover test. Everything worked fine.