Laptop Battery

Some laptop makers have designed high capacity battery packs for customers to buy. If you go onto the manufacturers web site, you will find pages for the battery choices that are available to you.

Most laptop battery packs start to wear out after 3 years of use.

Extended run laptop batteries....

"Extended run laptop batteries are specifically designed for each laptop model and have additional cells in the battery pack which allow the batteries to run longer between charges. Most laptops come equipped with a standard size battery pack that will last 2 to 2-1/2 hours when new. Extended run batteries can provide additional run times from 30% to 300% longer. Notebook battery capacity is measured in mAh ratings. You will find your mAh rating printed on your battery pack. If your existing battery has 4400 mAh capacity and the extended run battery is listed at 8800 mAh, you will enjoy twice the battery run time and up to 5-6 hours of run time with an extended run battery! All our extended run batteries will include the mAh rating on the battery pack and in the online description.

When it's time to replace your battery, an extended run battery is often a good choice if longer battery run times will allow you the added freedom away from wall outlets.

Extended run laptop batteries are not for everyone. Extended run batteries tend to be physically larger and heavier than their regular counterparts. This is due to the additional number of cells an extended run battery contains. For most laptops, the extended run battery packs will protrude to the rear or bottom of the laptop. You will want to consider the dimensions of your carry case and the added weight of extended run battery packs. Extended run batteries usually add about 6 - 12 ounces of additional weight. Unfortunately, not every laptop model has an extended battery pack available. If there is an extended run version available it will show up in your laptop model search results on our website."

http://www.laptopbatteryexpress.com/Extended-Run-Laptop-Batteries-s/12334.htm

External extended run battery packs....

http://www.thebatterygeeks.com/