Rechargeable Li-ion 18650 Battery 3.7V 3000mAh
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Prices updated: 13 Oct 2026
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About this product
A cylindrical 18650 lithium-ion rechargeable cell rated at 3.7 V nominal and 3000 mAh. It suits portable devices that need high energy density and low weight. Several cells can be wired in series for more voltage or in parallel for more capacity and current, and it should be used with a Li-ion charger and protection circuit.
Specifications
- Chemistry
- Lithium-Ion (Li-ion)
- Format
- 18650 cylindrical
- Nominal voltage
- 3.7 V
- Capacity
- 3000 mAh
Frequently asked questions
Which charger should I use for this 18650 cell?
Use a charger made for single-cell lithium-ion batteries, which charges to 4.2 V and stops there. Do not use a NiMH, NiCd or other-chemistry charger, as this can overheat or damage the cell.
Can I connect two of these cells in series for 7.4 V?
Yes. Cells in series add voltage, giving about 7.4 V nominal for two cells. Use cells with the same capacity and charge level, and a protection and balancing circuit designed for two-cell Li-ion packs.
