18650 Cell 3.7V 2600mAh Rechargeable Battery

The 18650 cell is a cylindrical lithium-ion rechargeable battery widely used in portable electronics. With a nominal voltage of 3.7V and a typical capacity of 2600mAh, it delivers reliable power for flashlights, power banks, and DIY electronics projects. Its compact 18mm x 65mm form factor makes it easy to integrate into custom builds.

Key Specifications

What You Can Build With This

• Build a portable phone charger using a 5V boost converter module and a TP4056 charger.
• Create a high-power LED flashlight with a constant current driver for maximum brightness.
• Assemble a rechargeable battery pack to power Arduino or Raspberry Pi projects on the go.
• Power a small DC motor in a simple robot by connecting multiple cells in series for higher voltage.

Compatibility

This 18650 cell works with any device or project that accepts standard 18650 cells. It pairs seamlessly with common lithium-ion charger modules like the TP4056 for safe charging. The voltage range of 3.0–4.2V is standard, so verify your device's input requirements before use.

Wiring Notes

Solder tabs carefully to avoid overheating the cell terminals. Use a battery holder for easy replacement and to prevent short circuits. When combining cells, ensure they are matched in capacity and charge state, and always include a protection circuit for overcharge/overdischarge safety.

Why Buy from Compoden

Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.