Review on Ultimaxx 4-In-1 Rapid Battery Smart Charger For DJI Mavic Air With LCD Display by Paul Dye

I got this in hopes that it would charge multiple batteries at once, but really it just charges your batteries one at a time so you don’t have to take your batteries in and off the charger to swap them out. It uses the power supply and charger that comes with the drone itself, so you’re basically using the power it takes to charge one battery to charge up to four.The most irritating thing about this accessory is that it takes longer to charge one battery on this than on the normal charger. It’ll sit there and "check” a battery for a good 10 minutes and then decide "oh, I should probably charge this.” If you have all 4 batteries on here, they won’t all be charged for probably 6 hours.Overall, it does as it’s advertised but what it really does is just save the hassle of having to get up and take the charged battery off and the next dead one on to the charger. If you timed it right, it would be faster to charge it that way than with this thing.