This Guide 10 Recharger Power Pack will charge AAs from the sun or will charge AAs from any USB port. This little and lightweight charger is small and will take up very little space in your pack or while you’re on the road. You can charge your phone or boost your tablet when they’re in need of more juice. This charger also comes with a handy flashlight that can be used while you’re digging around in your pack or bag to find necessities. Use this charger to boost your devices while you’re camping around the Sierra and leave the worry of dead batteries behind!