Polymer Li-Ion Battery 3.7V 200mAh 400821 (21x8x4mm, 2-Wire)
Prices updated: 14 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Microohm | Polymer Li-Ion Single Cell Battery 3.7V 200mAh 21*8*4mm 400821 2 wire | 95 EGP125 | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 95 EGP
About this product
A compact single-cell Polymer Li-Ion battery rated 3.7V and 200mAh, sized 21x8x4 mm with two wire leads. It is a practical choice for small battery-powered boards, handheld gadgets and portable DIY projects.
Specifications
- Nominal voltage
- 3.7V
- Capacity
- 200mAh
- Dimensions
- 21x8x4 mm
- Chemistry
- Li-Ion Polymer (single cell)
- Leads
- 2 wire
Frequently asked questions
What is the price of Polymer Li-Ion Battery 3.7V 200mAh 400821 (21x8x4mm, 2-Wire) in Egypt?
Polymer Li-Ion Battery 3.7V 200mAh 400821 (21x8x4mm, 2-Wire) currently costs 95 EGP in Egypt.
Where can I buy Polymer Li-Ion Battery 3.7V 200mAh 400821 (21x8x4mm, 2-Wire) in Egypt?
Polymer Li-Ion Battery 3.7V 200mAh 400821 (21x8x4mm, 2-Wire) is available from Microohm. Compare the offers above to find the best price.
Can it power an ESP32 board?
A single 3.7V cell can feed an ESP32 board that has an onboard LDO or a 3.3V input, but only within the cell's voltage range. Many ESP32 boards expect 5V on USB, so check the board's input pin and use a boost or LDO stage as required.
What should I check before connecting the leads?
Confirm the red lead is positive and the black lead is negative with a multimeter, and avoid bending the leads close to the pouch.
