inputs.text: external battery charger motorola droid razr - droid razr not want upgrade razr maxx larger capacity battery little external charger way go average usage razr lasts 10 12 hours single charge end night away wall socket little beauty comes real handy keep running plug razr electrical socket clear device not really add significant charge battery keep draining 0 least half hour hour depending much using phone device plugged larger capacity charger also manufactured motorola looks identical unit charge battery quite well even using phone almost twice price unit reasonable cost model suits fine