I personally don't like to charge batteries "on board". Even good packs can get very warm when being charged and to tell the truth I just don't trust them. I use a very good charger, which is important. Don't go cheap on your charger. Saving a couple of bucks on the charger can cost BIG in the long run.<div> As soon as I can figure out how to make a diagram i'll post the pin out for the HE Abrams. Like I said my Abrams and LEO where both wired differently so I cant say this will work for either. A little inconsistency on HE's part. But they both work, it just took a little working out.</div><div> Again I don't reconnect the wiring for any of the lighting, so if you want this it may not be of any help.</div>