Nitecore NL1665R 16340 Battery

This 16340 (RCR123) battery features and integrated micro-USB charging in the top of the battery. This means you don’t need another charger, just a cable!
It can still be charged via a standalone charger however, so you have multiple charging capabilities.

During charging, the LED indicator on top is red, and turns green when full so you know you’re ready to go.

The N1665R can be charged over 500 times.

It also features an integrated protection circuit to protect against over-charge, over-discharge and short-circuit.

Capacity: 650mAh
Voltage: 3.6V
USB Charging Current: 800mA MAX
USB Charging Voltage: 5V