Question

Does anyone know if there is a maximum limit for laptop batteries? What I mean is if I want to get a spare battery does it matter which I get as long as the dimensions are correct for the battery slot. I don't plan on cramming a larger battery in here just to see if it'll fit I am trying to get the largest Mah to extend my mobile enjoyment. With the current 9 cell battery (10.8V 6000Mah) i get close to 3 hours of constant use no adjustments. I think can get larger 9 cell batteries but I don't want to damage any internals with the change. SO if you know anything about batteries for Laptops please help.

Peace Out!