Which is better? I need Lipo technology.

[aqwut]

Metalman.. I'm 99.9% sure there is lithium in there.. it's wrapped in some kind of polymer plastics...

The astroflight 109D charges the cell to a maximum of 4.2V, I've checked everytime.... I know it doesn't have a balancer... that's the cr*ppy part.. but it works well for me... it seems the less I care about the batteries, the longer they last.. :)