Full Description1.The slimmest of 20000 mah power bank in the world2.The safest， the most reasonably priced with the highest configuration 20000 mah power bank in the world3.Exclusive One pieces design of 20000 mah power bank in the world， simple， and feel very high endUsing international high-end cell supplier， Lithium-Polymer battery (the same as iPad��s)12 processes�� examination before leaving the factoryAll for your safetyFast & Effective It comes with two USB ports which can be used to charge two devices simultaneously. It is universal fits for iPhone， iPad， iPod， Samsung devices， HTC phones， tablet PCs， digital cameras， game consoles and MP3/MP4 players， etcProduct Description1. Charging temperature 0 �� -45 �� (TYP)2. Discharge temperature: Start output temperature: -10 �� ~ + 50 �� (TYP)3. Continuous output temperature: -20 �� ~ + 60 �� (TYP)4. Weight: 530gParametersBattery type: polymer lithium batteryInput voltage: DC5VOutput voltage: DC5.1VInput Current: 2.0A (TYP)Output Current: 2.1A (TYP)Rated Capacity: 3.6V/20000mAh (TYP)Charging time is approximately: 12 hours， 5V / 2A charger， standard configuration cableSize: 169 * 122 * 13mm