Previously had a USB charging socket of HAMA with 2 outputs and 1.5 A charge current, but could not turn and charge Navi. The battery capacity decreased more and the Nokia Lumia 925 has been very warm. With the Nokia DC-20 everything goes smoothly Navi and recharge. Approximately 3% in 15 minutes. The design is slightly larger but still goes fine. Spiral cable is also very convenient.