Battery type: 18650 lithium Tolerance: 3.7V, 1,400 to 2,200mAh (optional) Output voltage 5.6V DC ± 5% Torch: 50 luming, 5 hours (2,000mAh) Output currency: 300mA ±10mA (maximum) Input voltage: 5V ± 3% Input currency: 500mA ± 5% Charged time: 5 hours (2,000mAh) Safe protection: charged and charging protection, overflow current and short-circuit protection, overflow voltage and short voltage protection, overload protection Circle life: >500 times High tolerance: 1500mAh International output standard: USB port charged and charging Capacity: can used for many kinds of cell phone covert cable Convenient to carry Dimension: 138 x 23 x 24mm Weight: 200g Torch: powerful torch, be aware of light hurt eyes