inputs.text: one purchase - battery several months not complaints makes 3gs phone actually capable operating day without charging includes displaying marine chart navication app without worry battery going dead yes display viewing chart 9am 5pm not cause problems limit phone im forced find cons would limitied plug ipod usb cable battery phone battery computer tells \\usb2 device pluged usb1\\ still connect computer battery starts go dead truepower iv phone starts making noise plug remove phone like nonskid feel fits well hand bought waterproof vinyl bag phone truepower iv fits inside nicely great prodct removes worries charge phone next go couple days making calls checking email finding places eat download couple songs apps without recharging