Review on VCUTECH Mini 2 Battery Charging Hub for DJI Mini 2 and Mavic Mini, Drone Accessory, Two-Way Charging Hub, Battery Charger, Mini 2 Accessory (Cable and Battery Not Included) by Chris Drury

Easy to use, charges one battery then the other rather than both at the same time. With the USB port, you can use it with batteries as a power bank to charge other devices, it doesn't store electricity to charge batteries like I thought. For the price it's amazing, reliable and high quality. It's good enough that I couldn't justify buying a brand name that lets you charge a third battery for $50 more. Great product and I'm interested in learning more about their other products.