inputs.text: back power go - device preformed expected things try put paces charged device fully left two days used see would hold full charge worked great charged ipad almost full power 20 specs say 7000mah pack lots muscleone uses device using charge phone using test passed flying colors device compact enough hold galaxy sii not charge phone use phone gave surplus power started 50 call phone 89it opinion use device cell phone tablet make great power back slim streamline profile carried pocket purse backpack ease enjoyed use continue give go know touch outleti would recommend device anyone go especially person smartphone work great never get enough power last day nt70t dont concern power pocket perhaps backup backpac