A couple things for starters. Yes, IMR batteries are a safer chemistry battery. That's why I and most people use them. Also there are a lot of cheap, knockoff, relabeled batteries for sale, so going through a "verified" dealer is a must. An understanding of ohm's law, or using an ohm's law calculator to figure out how many amps your atty is drawing compared to how many amps your battery can safely draw. And don't forget the multimeter for checking everything. I don't consider myself an expert, nor would I consider myself capable of explaining all the details coherently, but the information is out there.