The generator that I linked you to in the above replies from Harbor Freight will be on sale in April with this coupon code #29571223 for $88.88. This is a very small unit and only weighs 38 lbs. good luck
Tom O.
I use a leisure battery and a charge unit for the car so its continuously topped up .
So something like 120amp batt would charge all the batts you need for a days worth of flying .
No need to carry fuel for a Geny and much cheaper