1.Fast Charger:Input:5V/2.1AOutput:8.4V/1000mA*2. 2.It can charge 2* batteries simultaneously from any USB power source. 3.Can be used as a power bank,Equipped with USB charging cable, Micro USB interface, Type-C interface 4.Compatible model:This charger is compatible with a wide range of for DMW-BLF19E Panasonic Lumix GH3 GH4 GH5 G9