you should be able to use either one
the 11.1V is a 6Cell 4400 mAh (original battery)
the 14.8V is a 8Cell 5200 mAh (also referred to as an extended battery since it will give you more up-time)
Ok so the mobo has a voltage regulator that'll just drop the voltage of the larger one down? I just don't wanna fry anything. I've dealt with batteries all my life (I work for a company that makes them for the US military) so in my mind an extended battery would have larger capacity (mAh) not voltage. But I'm gonna trust your word. Like I said, I've learned a lot reading on here & 1 of those things is... You guys know your stuff.
Thank you for the help!