... phone power bank 8400mAH 2.portable,acceptable,durable 3.Certification:CE/FCC/ROHS Mobile phone power bank 8400mAH ... ,Nokia,MP3,MP4,Digital Camera,tablets etc. -Specifications: Battery type:Li-ion Battery Power capacity:8400mAh Input:5V/0.8A(max) Output1 ... controller, monitoring various operating status. 3) Over current and short circuit protect. 4) Long battery lifespan, more than300~ 500 times ...