Well, if I may.. your LiPo packs, regardless of it's size, are somewhat more of a problem than your NiMh packs are. They require some care in the charging method and handling. For example, you would never short the two leads together on any battery, but with a LiPo pack, well, it could cause a fire... a serious fire. If you don't charge them correctly, that too can cause a fire.

So, no matter what type of battery you use, nornmal care is really needed when handling them. LiPo's have a degree more care required.

There are lots of posts here on RCU on the subject of LiPo care and handling.

No matter what you decide to do, just make sure you treat the LiPo's with the appropriate care to remain safe.

CGr.