Battery Plugged In, Not Charging

I've got an HP Compaq nw8240 and when I move the mouse over the battery icon it says Plugged In, Not Charging. It only shows a 40% charge too, and if I unplug the AC adapter the battery will drain and then recharge back to 40% again.

I'm running the latest version of Windows 7 also. Anyone have any advice?

I've also tried updating the BIOS but when I download the file from HP's support site it and run it all it does is restart my computer and nothing changes. Thanks.

 

A problem with one of the cells. Replacement is probably needed.

 

In the battery, correct? I had similar problems from my old Dell and bought two batteries from eBay and those crapped out within weeks of buying them so I don't think I'll make that mistake and buy it directly from HP. Thanks for the help.

 

I had the same problem with my 8510p. It was weird because it happened right after I used the HP Battery Check software I had just downloaded from their website. Of course the software couldn't have caused the battery to discharge from 93% capacity to 11% in a matter of a couple of minutes. But the coincidence was startling.

My new HP battery arrived this morning and I'm a happy camper once again. Anyway, the reason I'm responding is to tell you that I don't think you need to necessarily buy from HP. Just make sure it's an actual HP battery. Do buy from a trusted vendor though. I got mine from NewEgg. I saw other vendors who referenced the model number of the battery that I wanted, or otherwise made it seem like it was an HP battery. But closer inspection revealed that they were not actual HP signed.

Good luck!

 

I'll have to check Newegg then. The battery I bought on eBay I thought was a Dell OEM but turned out it was a cheap knockoff which died on me a few weeks after I bought it.

Other than Newegg, do you recommend any other websites that sell batteries that are reputable?

http://www.newegg.com/Product/Product.aspx?Item=N82E16834998029

Wow, $160 for a battery. I wasn't expecting it to be that expensive, considering I paid $300 for the laptop.

 

Yeah, that price is a bit of a drag isn't it? That's the same battery I needed. It wasn't in HP's shop. I ended up going with NewEgg because I know and trust them. I saw "better" prices (some too good to be true in my opinion) but knew nothing about the vendors. I had asked about reputable vendors for notebook batteries in another thread but never got an answer on that. Perhaps someone can chime in here.

 

I tried letting the battery die completely until it wouldn't turn on anymore, then let it recharge over night. I got it up to 55% but it still says Plugged in, Not Charging. I can at least wait a few weeks and pick up a new battery when I have the laptop paid off if I just keep it plugged in, hah.