I require some sort of a power supply!

[Nas]

Hi guys,

I'm a bit lost at the moment, i run electric 1/8 buggys, and run 4s batterys. To charge those battery's i normally connect my CHARGER to my dad's or friends CAR BATTERY.

Problem is,my dad drops me off to races now,meaning i don't have a car battery. What can i do?

If i buy a car battery,i'll have to charge that somehow,and it weights about 12 tonnes!

What are the other options?

Thanks.