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 Canon EOS 40D 5D 50D 20D 300D 10D 30D 5D Mark Digital Camera Battery