Bought this item for recharging AA batteries which are used in emergncy SW radio and some flashlights (like the great LED Mini Maglite) around here: the Goal Zero 19010 Guide 10 Adventure Kit. It is small enough and this latest only 1 lb. model is useful, well rated, and faster charging. Product Highlights •Lightweight USB Solar Charging •Power Pack & Battery Charger •Fits in Your Pocket •Charges Both AA (included) & AAA Batteries •Recharges Cell Phones •USB and 12V Output •Built-In LED Flashlight •2-10 Hours Charging Time http://www.goalzero.com/shop/p/79/Guide-10-Plus-Adventure-Kit/1:4/ Being without power for almost two weeks except for what you can recharge offsite or from your car reminds you... I do have a solar panel to run and charge 12-Volt systems like car batteries and transceiver equipment that can all run off of the grid. I also bought two sets of Sanyo Eneloop XX 2,500 mAh rechargeable AA batteries that are supposed to maintin 75% power still at one year (Ray-o-Vac proved poor) as well as a ballistic nylon eight-AA battery case and additional 4-cell battery charger, all nicely discounted from B&H Photo.