WM240 Battery Intelligent Board
Function
Variants
Parts
Programming
External interfaces
Service interfaces
Board view
Schematics
DJI Intelligent Flight Battery for Mavic is a 3850mAh, 15.4V LiPo-4s battery, supporting up to 31 minutes of flight time. The battery also has built-in sensors and LEDs which let you know the status and remaining power. It contains automatic discharge feature to avoid swelling (fully charged LiPo cells release hydrogen), and Permanent Failure feature which disables the battery in case of damage or unexpected behavior of cells.
The battery management system chip (TI BQ9003) communicates with FC directly, through Smart Battery System protocol, with some small modifications introduced by DJI.
The SBS protocol defines battery-related commands to be transferred over SMBus, which in turn is deviced from I2C.
There are multiple versions of the board.
| Marking | Overview |
|---|---|
| PP000062.05 |
| Marking | Amt. | Pkg. | Function | Specification |
|---|---|---|---|---|
| BQ9003 | 1 | TSSOP-30 | Li-Ion Battery Pack Manager; the specific chip was only made available by TI for a few customers, but it is relatively similar to BQ40Z50. The DJI-modified firmware presents the chip as BQ40z307. | |
| 1C530l Prm 1829 C2 481000 | 4 | Nexperia N-channel 30V 1.55mOhm logic level MOSFET in LFPAK using NextPower technology | description | |
| 102 | 1 | SMD Resistors | ||
| 2m0 | 2 | SMD Resistors | ||
| CD | 1 | |||
| CON | 1 | MSD-DB05M-10P, MISTA Pitch 2.5mm 10Pin connector |
| Chips | Firmware | Description |
|---|---|---|
| BQ9003 | m1100 | Battery Management System chip firmware. |
Connectors on the board are:
| Marking | Overview |
|---|---|
| TODO |
The following service pads exist on this board:
| Marking | Overview |
|---|---|
| TODO |
Top of a PP000062.05 board:
Bottom of the PP000062.05 board:
No schematics available.