Rapid Universal Battery Charger with USB Output and Car Charger By PowerGen Compact, Portable & fashionable design / 5 in 1 universal Charger / auto detection of polarity / Autometically Stop when battery is full Innovative and Award winning Battery Holder design, compatible with over 90% Single Cell Lithium Battery USB output: DC 5.0V, 600mAh / Desktop Charging output: DC 4.20V, 600mAh Package includes: 1. Charger, 2. USB Car charger, 3. USB male to male cable Video Instruction is available on YouTube, please search "PG Universal Charger".