Mavic pro car charger issues

[jmfixitman]

I've had my mavic pro for I guess a couple years now. I've never used my car charger and went to use it last month, and noticed it doesn't charge my mavic batteries. It acts like its charging for a few minutes, then it shuts off. The only way for it to actually work and complete a charging cycle is to have my truck running... Hardly economical when I have a diesel truck idling to charge a battery... Anyone else have this issue with their car chargers??? DJI seems to think it's me and not a common issue.

 

[blukangoo]

I used mine for the first time too in a German MAN truck with a 24 Volt system. It charged the batteries as long as the truck was running and it stopped when I shut it off. Yes there is always 24 volts even when the truck is off.

 

[Kokopelli633]

They all do that, the charger has a voltage cutoff on the input side, it's a feature allegedly to stop you flattening your vehicle battery which is a bit silly when you consider your vehicle battery is eg 70ah @ 12volt = 840watt/hr and you are charging something that is only something like 4ah@ 14v = 56 watt hr (all approximations)
add some losses and you still wont be bothering your truck battery unless you are into charging dozens of batteries

Daft, but I guess in this day and age if some american got stuck with a flat truck battery somewhere the first thing they would do is try to sue someone else for their own stupidity, so DJI are just covering their arse

 

[Mav.phant.inspire]

Had the same results with old Mavic. But last night I noticed my M2P batts charged great while truck was off!

 

[rickw]

has nothing to do flatning your vehicle battery,charger needs 14 volts to charge mavic battery and your alternator puts out over 14 volts with engine running,you need voltage to charge