R50p - restore battery life

[kajencik]

Here I am, happy with my new toy - great R50p from ajkula66 . The only one problem is battery: It's quite old (07/2004), but I don't think it has to be so useless, it's a 9 cell battery for T4X, R5X (exept T43 and R52 I think), and it has very low cycles - now only 37!

And here goes the problem: first, there was 64 Wh capacity left from the original 72, good for the beginnig, but it dropped to zero from aproximately 60%, "no problem" I thought, it was obviously used mainly on the AC, reconditioning will do the job!, but, what a shame, after two full discharge and recharge cycles it dropped to the 22Wh only

Till here it's clear - I need a new battery, but here is the actual problem - after the battery drops to zero (this takes about an hour), it still holds the laptop up, right now, it's holding two more hours, including about 15 mins quite 3D intensive gaming. I think this means, that the battery is still quite powerfull (I dont expect it to go over 60 Wh, but little above 50% capacity would be nice), just the control circuits are a bit confused, by almost not using the laptop on battery power in the past.

And here is my question: Can someone suggest a way to make the battery circuits show the real capacity?

[frankiepankie]

I think one of the battery cells inside the battery is broken (you know that the battery consists of multiple Li-ion cells ?)

[frankiepankie]

I think one of the battery cells inside the battery is broken (you know that the battery consists of multiple Li-ion cells ?)

I have the same with an A22m, only 89 cycles, but at 48% it goes *BAM* to 0%

[kajencik]

Hello, thanks for your opinion, I know that there are multiple cells inside (9 in my case), may I ask whats your battery desing and fullcharge capacity?

And to add: now it's not dropping to zero, it keeps keeps normally draining the battery from 22 Wh to zero, then continues with 0 Wh for a long time (about almost 2 hours aproximately).

[kajencik]

I think one of the battery cells inside the battery is broken (you know that the battery consists of multiple Li-ion cells ?)

I have the same with an A22m, only 89 cycles, but at 48% it goes *BAM* to 0%

After some usage, I think you are true, it's still dropping, so never mind, at least I have a strong reason to get a new battery