I just pulled out my Villain Iv and want to start using it again but I need new batteries and a new charger. Any suggestions? I need the old school connectors and I was wondering if the battery is 7.2 volts does it matter how many MaH I have? Or will it get hot and melt a hole in the boat? For instance the last time I used this the most powerful battery avaliable had 2400Mah now they have some that are 5000. SO does it matter or am I just looking for one that runs on 7.2volts?