Portable rechargeable battery • 10000 mAh rechargeable Li-Pol battery. • Protection from over-charging, over-discharging, overload and short circuit. • Automatic turn on/off. Just plug your device(s) into RIVACASE battery output socket(s) and the charging will start. • To check the battery status, press the button on the battery body. 4 LED indicators will show the level of charge. • Smartphone charging - up to 3 times (depends on a smartphone battery capacity). • Cable included.