Why purchase from BigTime Battery?
We have over 60 years experience with laptop batteries.
We have the largest selection.
We offer Factory Direct pricing and 1 year warranty. Full factory Support. We offer an extended 2 year warranty for only 9.95.
Don't buy any battery with a warranty less than one year. Batteries have been known to die early, and a 3-Month Warranty could leave you high and dry.
We use only high quality plastics and cells - We use high quality YLE Cells.(Click for Cell Specs)
We offer Factory Direct Pricing - Guaranteed Compatible - 30 Day Money Back Guarantee

Select the proper Laptop Battery
Just use our SEARCH located on this page. Input your laptop model number or part number from your current battery.
We'll provide you with options to make your selection. If you 're still not sure, just call us at 815-467-6464 or email us

What is mAh or watt hour?
Lastly you must look at the power rating of the item you?e buying. As technology advances, so do power ratings. The battery you bought last year may be twice as strong this year, and might even be the same physical size. Batteries have two main ratings on them: Volts and Amperes. Because laptop batteries do not carry a very large amount of power when compared to larger batteries such as car batteries, most companies show their ratings with Volts and Milliamperes. One thousand Milliamperes equals 1 Ampere. When buying a battery, always go for the battery with the most Milliamperes (or mAh). Batteries are also rated by Watt-Hours, perhaps the simplest rating of all. This is found by multiplying the Volts and the Amperes together. We will now show you an example of finding the Watt-Hours for our example battery.

Our example battery is 14.4 Volts, 3600mAh
(remember that 3600mAh is equal to 3.6 Amperes).

14.4 x 3.6 = 51.84

How to install or replace your Laptop Battery
1. Turn off and unplug your Laptop. Make sure the laptop is unplugged.
2. Locate the battery compartment and remove the battery
3. Insert the new battery.
4. Plug in the laptop and boot it up, once it is up - you should see the charging icon
5. Charge the battery for up to 10 hours.  Overnight is the best. The battery fuel gauge may read full, but it probably isn't.
6. After the battery is fully charged - unplug the laptop and fully discharge the battery.
    This can be done by continuously playing ad CD or DVD.  Repeat this a least a couple of times.
 

Laptop Battery Trouble Shooting