inputs.text: imp500 external battery pack iphone 3gs 32g - iphones due constant texting yakking not quite last full eight hours working day researched zillions external power packs integrated phone cases tiny 1\\ square plugins etc primarily looking huge mah found imp500 5000mah time king heap bought one wasnt disappointed allday trip yosemite national park came handy unit compact not heavy toss inside typical students book bag ladys handbag sight mind iphone displays dreaded skinny red bar no ac outlet sight even one ac adapter usb chargingsync cableprice reasonable considering performance vs competition looking forward next big one imp880 charge even iphones tomtom gps prior long trip sfo la without cigarette lighter adapter cable cluttering dashboard