Functions: two-way fast charging, comes with a data line, comes with a screen display, flashlight Battery type: lithium polymer battery Voltage: 3.7V Size: 85x85x15mmPortable Mobile Power Battery capacity: 20000mAhPortable Mobile Power Rated capacity: 12800mAhPortable Mobile Power Charging protocol: pd2.0 PD3.0 QC2.0 QC3.0 QC4.0 QC4+ VOOC FCP SCP AFC PE2.0 PE3.0 DCP sfcp BC1.2 Maximum Output Power: 40W