Polymer Li-Ion Single Cell Battery 3.7V 250mAh 401230
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 13 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
A single-cell polymer lithium-ion battery rated 3.7 V and 250 mAh, measuring 12 x 30 x 4 mm. It is a flat cell suited to compact wearables, small sensor nodes and DIY projects. It must be charged with a Li-ion charger that stops at 4.2 V.
Specifications
- Nominal voltage
- 3.7 V
- Capacity
- 250 mAh
- Dimensions
- 12 x 30 x 4 mm
- Chemistry
- Li-ion polymer
Frequently asked questions
What charge current is safe for this cell?
A charge current of about 0.5C to 1C (125 to 250 mA) is typical for a 250 mAh cell. Set your charger accordingly and confirm the limit in the cell's datasheet.
Is a protection circuit needed?
Yes, use a protection circuit or a protected module. Overcharge and over-discharge can damage the cell, so check the polarity before connecting it to a board.
