Rechargeable Wuben 18650 batteries with a capacity of 3400 mAh.
The advantage of the Li-Ion battery is its high capacity, and it also almost does not suffer from self-discharge or memory effect.
This battery is equipped with protection against over-discharge, short circuit, overheating, and high current draw. If the battery's electronic protection reaches limit values, the cell is safely disconnected. The lifespan is more than 500 charging cycles.
This R version is additionally equipped with a built-in micro-USB-C port, allowing charging without the need for a charger.