Battery cell type: polymer Li-ion battery cells Rated input: DC 5V, 1ARated output: DC 5V, 1A (maximum)Change rate: 85% Auto wake-up for charging Recharge cycles: charge to 100% up to 500 timesIndicators: 4-battery level LED Protection functions for short circuit, over charge, discharge, touchscreen Certifications: CE/RoHS/FCC/UN38.3