I own a DJI Phantom 3 Advanced with three intelligent flight batteries which I always have charged at home with 120 volts to this point. I will be going to a remote cabin sometime this summer that only has a conventional generator and a couple of deep cycle batteries that are used as an alternative power source. My question is will the DJI standard and 60 Minute Chargers run correctly on the power from a conventional 4000 Watt generator? Or do I need to purchase an inverter to run off the deep cycle batteries? If so what would be minimum size converter be that I can get by with? Also would I need a pure sinewave inverter or could I get buy with a modified sinewave?