laptop battery

The voltage is the only spec that needs to match your current battery.

The mAh rating is a measurement of how long the battery will operate your laptop. It stands for milli-amp hours.

As an example, if your laptop consumes 2.2 amps when it is operating (2200 milliamps) the first battery (4400 mAh) would last for 4400/2200 or 2 hours.

The same laptop with the 8800 mAh battery would last 8800/2200 or 4 hours.

The formula for watts is simply voltage x current , so the 10.8 volt battery with a capacity of 4400 mAh has a Watt Hour capacity of 10.8v x 4.4 Ah which is 47.52 Wh.

NOTE that these numbers were chosen to simplify the math. Hopefully you get longer life than these examples.

More capacity. The amperage and wattage is just the power/current and charge capacity. The computer will just draw what it needs as long as it gets the expected voltage..

The 6600 and 8800 batteries are also 50% and 100% bigger than your current battery so they'll stick out like a sore thumb from the bottom.

Thanks a lot guys!

I was wondering what those numbers were.

If the laptop is old, chances are you're looking at aftermarket batteries or new old stock OEM batteries that are no longer manufactured. In either case, take capacities with a grain of salt.

The large extended batteries are awesome for runtime, but they will stick out and make the laptop heavier so pick your poison.