Has anyone ever used one of these power banks
to charge Mavic air batterys it has a UK 3 pin socket on the top
Got a link?
Not used one personally mate.
Going by specs alone ,you will get around an hour charge time with the 50w air charger.
Few of the reviews saying it will charge a spark or Mavic.
No mention of if it’s square or modified sine wave either.
I was thinking about a portable solution few months back. The 12v DC to 220v AC and back down to 12V DC is quite inefficient, especially if the inverter is a square wave type. You lose a lot of capacity to losses in the transformer.
My thinking was that a high capacity 12v powerbank or Lion golf cart battery might be better and paired with the DJI car charger.
Edit - maybe not. The dji car charger has low voltage protection so you can start the car, probably wouldn’t work well unless you had a steady voltage throughout the discharge.