Polymer Li-Ion Single Cell Battery 3.7V 1000mAh 502020 (2-Wire)
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Prices updated: 13 Oct 2026
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About this product
A slim single-cell polymer Li-Ion battery rated at 3.7 V and 1000 mAh, with two leads for direct connection. It suits portable electronics, sensor nodes and DIY projects that need a rechargeable power source in a small footprint.
Specifications
- Nominal Voltage
- 3.7 V
- Capacity
- 1000 mAh
- Dimensions
- 20 x 20 x 5 mm
- Chemistry
- Li-Ion Polymer
- Leads
- 2 wire
Frequently asked questions
How should I charge this battery?
Use a single-cell Li-Po charger with a 4.2 V charge limit, preferably a module with built-in protection. Never connect it directly to a 5 V supply.
Can I use it as a backup power source for a microcontroller?
Yes, with a suitable charger and a regulator or input circuit designed for Li-Po cells. Check the load current your project draws against the battery capacity and the board's input range.
