Polymer Li-Ion Single Cell Battery 3.7V 700mAh 403040 2-Wire
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 14 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 700 mAh, measuring 40 x 30 x 4 mm with two wire leads. Its larger capacity suits portable projects that need longer runtime, such as small robots, handheld devices and data loggers. It must be charged with a Li-ion charger that stops at 4.2 V.
Specifications
- Nominal voltage
- 3.7 V
- Capacity
- 700 mAh
- Dimensions
- 40 x 30 x 4 mm
- Chemistry
- Li-ion polymer
- Leads
- 2 wire
Frequently asked questions
What charge current should I set for this cell?
A charge current of about 0.5C to 1C (350 to 700 mA) is typical for a 700 mAh cell. Choose a charger setting within the cell's datasheet limits.
How should I connect it to a microcontroller or charger board?
Connect the two wires to the battery terminals of a single-cell charger or protected board, observing polarity. Never connect the leads directly to a 5 V supply, since this can overcharge the cell.
