Usually this DC coupler is working with an AC power adapter that with DC 7.6V-8.6V output. When you want to long time shooting outside without AC outlet, then you'll feel it's not convenient. Also you can use with a DC 8.4V power bank, but it's not easy to find a DC 8.4V power bank, and it's expensiver.
So we provide this solution, with our coupler and customized USB cable which built-in an intellgent circuit board(improve DC output from 5V to approx 7.6V-8.6V), you can connect this USB with a DC 5V 2.4A-3A power bank, or USB3.0 Quick charger which deliver 5V 3A power.
Please note: if your camera can be powered on, but it reminds you to change a battery; or when shooting, it powers off, this indicates your power supply is not enough, please change another one which can give adequate power.
EN
