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, therefore the potential risk of short-circuiting caused by collision or impact is hugely eliminated.
Micro-USB charging port
Short circuit protection
500 charge cycles
One Year warranty from the date of purchase. Over discharging or battery leakage is not covered nor is fast draining of battery while using. Please keep the voltage of all Li-Ion batteries above 3.8V for healthy storage. Recharge as soon as possible when you have run them down. Storing a depleted ( less than 3.2V open voltage ) battery may damage/ shorten life/cycle permanently.