Us Weekly has affiliate partnerships so we may receive compensation for some links to products and services.If your phone always seems to be hovering around the 10% charged mark, a battery life extender is guaranteed to be a lifesaver — and we found the best one. This Anker Portable Charger will allow you to stay connected even if you forgot to charge your device overnight.These Anker chargers carry multiple full chargers within them for all different types of devices.