Celly Li-Ion 4000mAh

Small and and highly performing Li-Ion 4000mAh emergency battery, Black Li-ion emergency battery with 4000 mAh capacity. Equipped with universal USB port with 1A output power and microUSB cable for battery or device recharging. It can be connected to all devices having 5V operation voltage and maximum 1A current input, can also be used to charge MP3 players, GPS, bluetooth headsets and speakers. Equipped with practice light and 4 indication led for residual power.