Nah, just use lithium iron phosphate (LiFePO4) batteries. They're not quite as energy dense as LiPO, but they have longer lifetimes, better power density, and

Nah, just use lithium iron phosphate (LiFePO4) batteries. They're not quite as energy dense as LiPO, but they have longer lifetimes, better power density, and are WAY safer. You'll see a lot of roboticists using these already (for safety reasons). For example, you can grab some nice Turnigy LiFePO4's at most hobby shops.