[Espeefan]

I've always feared the LiPo packs myself, even though they are pretty safe. Something about the need to store them in a fireproof container or sack, and charge them in one as well freaks me out. Chances are it will rarely burst and start a fire, if you treat them well, and LiPo packs can be found everywhere in your house already. Cameras, cell phones, your electric shaver, ect. But I have been looking at the LiFe cells, which are supposed to be as safe as NiMh cells, have a longer life with more charge cycles, and they also can handle some serious discharge currents. Even better then LiPo packs, plus you can recharge them faster. The only downside is they are really pricey!