LiPo LiPo LiPo!

[JOHNNYMAXXIMA]

Ok, I'm trying to figure out this hole LiPo thing. I really want to go LiPo in my dual 9L setup because the thing ways so much.

So I am running 28cells in it now, wich is obviously four 7cell packs. Each motor gets it's own two packs. The specs say that a 9L can handle up to 16cells (19.2v) but I hear alot of people say they wouldn't recomend it. Why would they publish that if it is not recomended?

Anyway, if I were to go LiPo, I was thinking about going with two 5s packs (one for each motor obviously) wich is 18.5v per motor vs. the 19.2 of the 16cell nimh packs. (do you see were I'm going with this) Is voltage voltage, or does it matter if it is coming from nimh or LiPo. If some people think that 16cells (19.2v) is a bit much for the 9L then a 5s LiPo (18.5v) must be a little bit easier on it?

Hopefully all that made sense, PLEASE HELP!:D