Windows 7 Killing Laptop Batteries

[#1]

I got a used ebay laptop - My Dv9702 - When I got it, the wear level on the battery was 43% - Now,  4 weeks later, its 81%. Theres a really big thing on MS Technet about this, but I Just want to find out if anyone else is having this problem? - My battery lasts 30mins now.   . Anyone know how to fix this? ( I dont want to buy a new battery)
Many Thanks

[#2]

Windows 7 supposedly reports the battery condition more accurately as previous versions reported it in better health than it really was. Google has plenty of background reading.

[#3]

Not that it helps, but I regularly get 5 hours out of my EeePC 1000H battery, running Win7.
In fact, it's now 18 months old, and I still get exactly the same runtime on batteries as to when it was new.
B.

[#4]

I would suggest that you cut your losses and move it on asap as the HP DV9000 series laptops have a well documented and expensive to fix motherboard graphic card problem.

[#5]

Ive already had the motherboard problem...and had it fixed (for a price). The technet discussion continues into part 10 -
http://social.technet.microsoft.com/Forums/en-US/w7itprohardware/thread/8a74c53b-406f-4ce6-a1ae-da1d...

Im sure Microsoft are aware of the problem - I wonder when they are going to release a update or something, as I have a idential laptop to the dv9700 running vista, and the battery lasts as long as the day i bought it.
I wonder why that is?

[#6]

As it is second hand you don't know how well the previous owner has looked after it. Rechargeable batteries do have a lifespan, but it can be variable. Some fail quicker than others. New batteries aren't that expensive, anyway.

[#7]

Quote from: Amanha

I have a idential laptop to the dv9700 running vista, and the battery lasts as long as the day i bought it.

What happens if you switch the batteries between the two identical laptops?  That would tell you if you have a bad battery or a bad version of Windows. 

[#8]

Ive checked that. My battery is quite dead. I dont know why it does that though....by the looks of it to only upgraded machines?
jim:quote

[#9]

To clarify, so it's really just a dead battery and nothing to do with Windows 7???