Charging mavic 2 pro battery with portable jump starter

[offtheback]

Anyone have experience using a portable 12 volt jump starter battery to recharge drone battery in the field?Would use Mavic 12 volt car charger hooked to the portable starter.

 

[matth1000]

Wont work because the charger requires over 13 volts from memory.

 

[offtheback]

Wont work because the charger requires over 13 volts from memory.

Thanks.Tried one and only charged intermittently.Good to know the reason.