The fast-charging Nokia universal portable USB charger DC-16 fits in your pocket and gives your compatible device a full charge. Nokia Universal Portable USB Charger DC-16 doubles your smartphone battery life. The powerful built-in battery provides enough power to fully charge your phone and has a clear indicator to show charging status. This portable charger has a large rechargeable 2200 mA lithium ion battery that holds its charge more than 3 months. It's designed to provide a high output that charges your phone quickly so you'll have power whenever you need.