Stay charged wherever you go with the portable backup battery car system. Simply recharge the power bank via its car charger base so you can take a backup charge with you. Get instant power for smartphones and tablets. Plus, the double-duty car charger also has an ultra-fast, high-efficiency USB charging port to power up other mobile devices too. Talk about double-duty, the power bank not only delivers a full-charge to smartphones, it also brings light to any situation with its built-in LED flashlight. And for added convenience, the car system power bank is also compatible with the PB26H home system.