General Battery Question

Before I spend 100.00 on a new one....

My HP NC6400 Battery is dead as a door nail. I rarely ever used it on battery power and I was told that this is why...

Is there something that I might do to revive it?

Is it true that if you rarely run it on battery power it wil not do well (battery memory)?

Thanks

 

Lithium-Ion batteries do not have any memory effect.

Since you cannot use it at ALL rather then just for a very short time it most likely that your battery has fallen below the safe voltage. At this point an internal curcuit switches to prevent charging because doing so is very dangerous.

You might be able to have someone open it up and get it to a safe voltage to start charging normally, but I wouldn't know who to suggest.

 

You did not use but I assume it was in the notebook so dropping below safe voltage is unlikely? If I am wrong about being in the notebook then AuroraAlpha hit the nail on the head. How old is the battery? I believe never using battery can cause issues but don't remember how that works if correct. It is not the full discharge every 30 days. If I find will post back.

K-Tron will have info on how to bring the voltage up so you can charge. So just wait and you will get the answers maybe today/tonight. You could also try searching the site for his previous answers I think one a page or two back. I would hate to recommend you search and the site crashes but well good luck.

 

Jack, welcome to nbr,

If the battery isnt working, and you ahve some patience and tech skills we can make that battery run again. If you never used the battery, what may have happened is that the cells simply oxidized a bit. This can happen on the interior or exterior of the cells. Cleaning the connections and checking for conductivity is the first step. If the battery still conducts electricty you are good. What may have happened is the battery monitoring may have automatically shut down your battery. Companies will do this, and can set the amount of time a battery can run. They do this, so the consumer will buy another battery from the company, so they can make more revenue.

If you take the battery apart, you will find about 6-12 silver batteries about the size of "C" battery cells. Just dont take them apart, cause batteries have dangerous acid in them. But their is a PCB (usually a green silicon board) inside the battery which houses the microcontroller which tells which cells to charge at what time. This microcontroller has the capability of shutting the battery down after a certain preset amount of hours. Well you can reset the battery by shorting the microcontroller. To do this, you need to take a picture of the PCB inside the battery, and post it here. Than we can find your microcontroller online, and hopefully find a spec sheet for it. Simply read the spec sheet and short the proper leads, and the battery will ahve 0 hours of use on it again.

I have done this two times already on some Dell batteries I have, and they are still running strong after 7 years.

I have only tested and got working results on Dell batteries, so it may not work on Hp ones.

K-TRON