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http://www.pcmicrostore.com/





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 A CMOS battery supplies a trickle of electricity to the CMOS chip on your motherboard. This trickle makes the chip able to save the setup information about your computer's configuration and date/time even if the computer is unplugged. Without this battery, the chip cannot save the information, and it has to be reset every time power is restored to the computer.
In this laptop the CMOS battery was a Ni-MH battery pack. When you buy a desktop computer, the CMOS battery is a little button cell that usually lasts for about 10 years. This laptop is older than that, so I guess it's time to replace it.

http://www.pcuniverse.com/





http://www.gogreensolar.com/





http://www.geniuseshop.com/





http://www.bargainbasementbatteries.com/





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These are some of the tools you will need to rebuild a Ni-MH CMOS Battery pack. You definitely need a sharp knife to cut open the old pack, a soldering iron, solder, and some needle nose pliers.
I recommend using a hot glue gun to keep the cells together while soldering. I also recommend picking up some battery bars from a RC hobby shop
Once I sliced open the old pack, I could see what was probably the problem. The last cell in the pack had corrosion all over it. This is usually because of a leak.
Now line all the cells up in series, and hot glue them together. Its best to look at the original pack to make sure you are lining everything up correctly. I also pulled of the tabs that I didn't need with some needle nose pliers.
 
I used these battery bars to connect the cells. In RC cars they are used for battery packs that use Sub-C cells. These are a lot wider, and have a larger gap to cross, so I had to bend them.
After I was done, I realized I should have just cut the bars down or used something else because the pack ended up much fatter than the original and in a laptop that isn't good.
These little cells heat up very quickly so be careful. This causes a lot of problems, the hot glue starts melting and the cells move around. The insulation melts (that can be bad), so take your time and don't let the batteries heat up too much.
When you get the cells stable, de-solder the wires from the original and make sure you solder them the right way. Then wrap the whole thing up in your favorite color of electrical tape.
 
http://www.all-battery.com/
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