As a charger: connect the device to a power source. The LEDs flash red / green / blue. Now insert the batteries into the charging shells. As soon as the LED shines green, the charging process is complete. As a power bank: If the batteries are loaded, you can use the device with a USB-A cable as a power bank. To do this, connect the USB-A output to a compatible device such as a smartphone or tablet. The LED lights up blue during the discharge. Technical data: input: USB-C / Micro-USB, 5V, 2.1A (min) output: 2 x 8.4V / 1000mAh *1, 500mah *2 Weight: 136g size: 7.3 x 13 x 2.9 cm (W x L x D) Scope of delivery: charger, instructions suitable for the following camera types: Canon EOS 5D, 60d, 60da, 6d, 7d, EOS70D, EOS-70D, EOS R Mark II, Mark III; Blackmagic Pocket Cinema Camera 4K, Blackmagic Pocket Cinema Camera 6k Suitable for the following battery models: LPE6, LP-E6 With the new Patona Dual charger for Canon LP-E6 you have everything in one box. Keep and load up to two batteries at the same time. Furthermore, up to 2 SD cards have space for storage. The batteries can be used as an external power bank. A modern microcontroller controls the electronics. The charger can either be connected to the power source using a USB-C or micro USB connection. A check -up informs you about the current type of use (as a charger or as a power bank) of the batteries.