inputs.text: fantastic price performance - plan follow review much detail great universal backup phone tablet without questionone minor drawback unit doesnt actually come 120v ac 5v dc usb charger easy enough appropriate personally would recommend charger 2 amps output since battery draw one amp charge thats fairly common adapter find example [ [ asinb009ydfx7y samsung oem 20 amp travel charger detachable micro usb cable samsung galaxy note galaxy note 2 ii galaxy s3 iii galaxy s3 mini smartphones ] ] anything less 12 amps output going tasked close maximum rating run higher risk damaging chargerthe biggest drawback charging time going take 78 hours drain battery 25 less thats simply capacity pack high takes longer recharge \\drawback\\ not \\flaw\\ manufacturer pay rating points love batteryi cant justice specs others already done try illustrate performance backpack week charging first use know fact batteries especially rechargeable trickle discharge not use realistically not 100 used note ii stock battery still able completely charge first time 40 phone battery second time several days later 30 phone battery new trent battery pack still juice left spare albeit low uses no charging two weeksright going 30 may purchase couple gifts fantastic never know may need one take much space cell phone performance price cant go wrong definitely recommend others confidenceprice cant go wrong definitely recommend others confidence