inputs.text: imp70d external battery best class - several external battery charging devices iphone ipad imp70d solid external battery charge usb port since 7000 mah capacity charge iphone least three times needing recharged ipad half charge used external battery bring full charge two usb charging ports charge ipad iphone power unit lightweight relatively small also higher powered imp99d impressed new trent products reliable intended job well imp70d adequate traveling also found customer support helpful pros imp70d not continue draining charge iphone ipad small 44 x 34 x 06 lightweight 8 oz indicator lights not overly bright become disturbing night work many different devices 2 usb charging ports allow lower current iphone higher current ipad seehems durable cons far nothing negative conclusion tried duracell external battery 1150 mah mobile power station 1000mah unioo mobile power 800 mah duracell good extra 3 hours talk time ones low capacity useful traveling new trent imp70d clearly battery get need lightweight small external battery traveling well keep not traveling new trent lower capacity higher capacity batteries may useful depending needs would not hesitate buy batteries fact purchased 2 imp70d batteries 2 higher capacity new trent batteries