3.7V 2000mAh LiPo Battery
Slim rechargeable LiPo cell for compact wearable and drone builds.
Wiring & code for
LiPo 2000mAh practical reference
A rechargeable lithium-polymer pouch cell offering a good capacity-to-weight ratio for wearables, drones, and compact robots. Unlike a rigid cylindrical 18650, a LiPo pouch cell is thin, flexible in shape, and lightweight for its capacity, making it well suited to projects where the battery needs to fit into a slim enclosure or minimize overall weight — but it requires careful handling, since LiPo cells are more sensitive to puncture, overcharge, and over-discharge damage than more rugged cell formats.
Key specifications
- Chemistry: Lithium-polymer (LiPo), single cell
- Nominal voltage: 3.7V (charged: 4.2V, discharged cutoff: ~3.0-3.2V)
- Capacity: 2000 mAh
- Connector: Common 2-pin JST-PH connector (2.0mm pitch) — verify polarity before connecting, as JST connector polarity is not universally standardized across suppliers
- Discharge rate: Typically 1C-2C continuous for standard (non-high-discharge) LiPo cells, check the specific cell's rated C-rating for higher-draw applications
- Protection: Bare cell has no built-in protection circuit — requires a separate charge/protection module (e.g. TP4056 with DW01) for safe charging and discharge cutoff
- Physical form: Thin flexible pouch, size and shape vary by supplier at a given capacity
Pinout and connection notes
Always verify the exact polarity of the JST connector before plugging into a charge board or power circuit, since not all suppliers wire the same pin as positive; reversing polarity can damage both the cell and connected electronics. Never charge a bare LiPo cell without a proper protection/charge circuit, never puncture or bend the pouch, and always monitor charging, since damaged or improperly charged LiPo cells present a fire risk.
- Red wire (+): Positive terminal via JST-PH connector
- Black wire (-): Negative terminal via JST-PH connector
Integration checklist
- Confirm the exact part number and breakout-board revision.
- Verify supply voltage, current demand, logic levels, and signal direction against the datasheet.
- Check controller pin assignments and bus address or interface mode against the example code.
- Power up with external loads disconnected, then test signals before full integration.
- If readings or communication fail, check power and ground first, then pin mapping, interface settings, and library initialization.
Troubleshooting and reproducibility
Record the board used, wiring, library/version, supply arrangement, and measured behavior. Use the selected board-specific wiring example as the source of truth. Never assume visually similar modules share identical voltage tolerance or pin order.