Batteries is usually in the 4500 to 5000 mil 5s capacity most people use 2 5s packs or one 10s pack, that is if you go the 2 meter route, A good charger is a must I use the Power lab 8 I can charge 2 packs at a time in about 15 minutes, however it is not plug and play you will need a power supply to run it, I use the IOTA 55 amp power supply, you can get the power lab from FMA direct, they have another charger called the 10s which is also a good charger, 12 volt car battery probably wont cut it although some people go that way. Batteries you get from several places cheapest are probably from Hobby KIng many people including myself have some bad experiences with them. Its just a matter your budget, I would recommend a generator for the charger, doesnt have to be an expensive one. I would recommend F3A Unlimited for all your pattern needs.