Laptop battery voltages
Hi guys. I have a trusty laptop whose battery has long ago given up the ghost, so I'm looking to replace it. The current battery is a 11.1V 3600mAh Li-Ion, but when I look on Ebay for replacements, I see a number of 14.4V batteries for the same model laptop. What is the difference? If I buy the 14.8v, will it fry my laptop? Again, it is for the same model laptop, so I wouldn't think so - is the increase in volts just an indication that it is a longer lasting battery, or what? I also see 3900 mAh batteries... what does all this mean, and which should I buy? They are all similar prices.
Thanks for any help you can give.
Anyone? I'd like to buy one soon so it is there when I get home for Christmas. Thanks in advance!