18650 Lithium-ion Rechargeable Battery 3.7V

With its 3.7V 18650 7800mAh Lithium Ion Battery build, DIY circuits gain portable power. Under the shell, high energy density cells maintain a 3.7V nominal output. Across standard 18650 form factors, it fits power banks and handheld torches without modification.

Key Features

1. High Energy Density: Lithium-ion chemistry provides concentrated power in a 18650 cell. High energy density prevents rapid voltage drops during use.
2. Lightweight Design: Compact 18650 form factor minimizes weight in portable electronics. It won’t bulk up handheld torches or DIY power banks.
3. Rechargeable Cycle Life: 500-700 charge cycles before the capacity drops significantly. It survives months of daily recharging despite heavy road dust.

Frequently Asked Questions

Is 7800mAh 18650 battery real?

Most single 18650 cells don’t reach 7800mAh capacity. This rating typically refers to internal parallel configurations or peak laboratory limits.

How to charge 3.7V 18650 battery?

Use a dedicated lithium-ion charger with a 4.2V max voltage. Constant current/constant voltage (CC/CV) charging avoids cell overheating.