inputs.text: great battery pack - usual delivery amazon faultless beautifully built unit inbuilt usb charger lead mini usb output lead twin usb outlets allowing one device charged oncei needed additional power source iphone ipad travel quite bit also need gps mapping walking hot air ballooning hits battery hard screens always \\locked on\\ full brightness modes clearly battery failure not option wantmy test results impressive starting 20 iphone nt70t recharged 2 12 hours went power total 26 hours ipad larger screen clearly never going match however double internal battery display time 5 hours giving total 11 hoursrehemehember gps running screen never turned amazingi looking forward next travelling trip never need worry find not charging point time needed use also works treat camera die quicklyin summery great unit power hungry applications usage convenient delight use downsides none find invent even better battery packs get one