Polymer Li-Ion Single Cell Battery 3.7V 1200mAh 50x34x5mm
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Prices updated: 13 Oct 2026
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About this product
A slim single-cell polymer lithium-ion battery rated at a nominal 3.7V and 1200mAh, measuring 50 x 34 x 5 mm. It suits wearables, small portable devices and compact DIY projects where space is limited. The cell has built-in protection against overvoltage, overcurrent and under-voltage, but it requires a dedicated LiPo charger.
Specifications
- Nominal voltage
- 3.7V
- Capacity
- 1200mAh
- Dimensions
- 50 x 34 x 5 mm
- Chemistry
- Li-Polymer (Polymer Li-Ion)
- Built-in protection
- Overvoltage, overcurrent, minimum voltage
Frequently asked questions
How should I charge this cell?
Use a dedicated Li-Po charger that stops at 4.2V per cell. Do not charge it with NiMH, NiCd or lead-acid chargers.
Can I connect it directly to a 5V board?
Not directly. The nominal voltage is 3.7V, so a 5V load needs a boost converter. For 3.3V loads, check the regulator's input range before connecting.
