The ARB-L18-2600U battery can be charged by its own USB port and by the charger as well.
A protective circuit is built into the anode and covered with a riveted steel hat.
The battery is fully covered with the steel shell, thus the potential risk of short circuiting caused by collision or impact is hugely eliminated.
Micro-USB charging port
Short circuit protection
500 charge cycles
Charging current by charger: 1A (recommended), 2A (maximum)
Charging current by USB port: 1A
Size: Diameter 18.6mm Height 70mm