inputs.text: almost perfect - bought battery power iphone ipad devices powered usb capacity battery stunning not done scientific tests recharge iphone many many times battery need recharge first positive surprise small size reading 11000 mah capacity expected larger heavier nice see compact usage super simple one button turn one usb plug three leds show status battery charging complete unit turn automatically battery not traveling areas without power found used time convenient plug instead finding wall plug never convenient place cable never long enough recharging battery takes 45 hours said week important ipadipad2 output limited 1 amp ipads original charger 21 amp not get speed charging ipad using external battery theory charging would take twice long original charger reality not bad measured original charger typical charge current 13001600 reality original charger not twice fast 14x faster devices including iphone ipod touch charge fast overall happy battery exceeded expectations terms capacity smaller would think charge current enough device small compromise ipadipad2 4 months no encountered issues would highly recommend battery