inputs.text: perfect balance charging capacity price - third external charger definitely best first something bought airport sharper image decent charger 1a output pretty limited charging abilities paid 75 sold bought zagg sparq 2 due fact could charge tablet 6000mah bulky relatively heavy got sale 45 worked fine wife took could keep iphone charged looked around finally settled new trent n70t one best electronics purchasesit perfect balance form function anyways fully charged iphone 4s 40 twice fully charged ipad mini 38 charged portable speaker still shows power left plenty power figure long plane trip would takethe n70t charges built usb cord folds side plastic shell new trent includes usb extension cord use usb wall plug not stuck using computer instructions say fully charge first use plugged going bed 4 led lights flash charging glow steadily full led lights glow not shine like headlight finally someone realizes arent lighting way alien invasion chargingto use battery plug usb charging cable one outputs press button turn comes built micro usb cable charge many gps units cameras without additional cords 21 port seems work indicated rapidly charged iphone 4s 40 1 hr 20 min check amount power remaining press button see many bars light upvery happy product would recommend everyone