What kind of battery? NiCd, NiMh, or Lipo? If the first two it's not so bad but if the latter yeah you're lucky your house didn't explode and burn down as can happen if you're not careful with lipos and/or abuse them heavily.
NB: Lipo's are safe as long as you follow common sense and take care of them, but if you abuse them they can explode in a miraculous fashion (eg. the laptop battery exploding thing that was in the news a few years ago).
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE