thank for your vist post ,but you have to read this, if there are can help you:
"Keep in mind that no matter what you do, the charge capacity of a
battery will drop steadily and eventually will drop to below a useful
level.
Laptop batteries don't last forever. It's kind of why you see a lot of perfectly good,older laptops being used sans batteries. The battery's died of old age, and either the laptop's too old to get a replacement battery, or
the replacement's too expensive for the owner (some have fairly
expensive generics available, but as I mentioned, some of them run
into the hundreds of dollars)"