Perfect companions for Camping, Air Travel and RV Trips! World's smallest and lightest travel batteries with built-in AC Outlet for CPAP and BiPap machines. Work with all brands and models without special adapters and converters. Various battery capacity options for short and long trips. Very versatile and can also power laptops, camera equipment, phones, tablets, lights, and game consoles to support the fun adventures. All models include an universal wall charger. Three options of Zopec PHOTONS Solar Chargers available for different battery models and weather conditions. Car chargers available and some models include a car charger.