It's a bit expensive accessory, but what's wrong with this material! I use it with my DJI 100W charger to charge all my batteries. It only charges one battery at a time, but when you connect batteries to the device, the device "sorts" each battery and starts charging the fullest battery first, and so on until all batteries are charged. Once the battery is charged, it can be removed without disturbing the next battery charge cycle, and other batteries can be added. Unless you're hoveringβ¦