yep i hgave just been doing alot of research on these, and you can get some cell balancers for lithium polymers that check each cell and re-balance them evertime before you charge. This can make your batteries just as safe as others. If i ever ran on lithiums, i would deffinatly keep them well packed in foam, and charge out of the robot- but if looked after carefully, they woould be good - and expensive lol.