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 Sony Alpha A58 DSLR-A350A300/A350/A450/A500/A550/A560/A580/A700/A99/A850 SLT-A57