inputs.text: not great works - got another portable battery backup got solar powered usb charger itehem not not charge solar power would not provide enough amperage charged full capacity not use 3 days 2 4 power indicator lights battery backup got price charge solar usb charger still full power indicated week non use fits pocket better rating would probably give 310 ok know going need extra juice next couple days fact loses power time real turn battery backup something run power phone device daily fine recharge every day two plan charging leaving ehemergency usb powered batteries fit needs going use one daily listen internet radio iphone work keep one around holds charge long periods charges cheap solar usb charger