Battery reconditioning

[Oliver]

bloodline wrote:
Li-ion batteries have a very limited life span. No more than 1.5 years really, and probably not more than around 150 to 200 charge cycles before capacity degridation sets in.

Once the battery starts to lose capacity there is no way to restore it, the battery has physically degraded.

Try to avoid deep cycles with lithium batteries they work best when kept nearly full at all times.

ditto. That's my understanding too.

I believe heat will also degrade a Li ion battery. Don't heat them, and don't leave them in a car, direct sunlight, etc.

motorollin wrote:
This battery is behaving very strangely...

Battery management ICs generally use an analogue sense circuit to judge the battery's state. The sensory elements are often not very precise, and may not really indicate the true state of the battery. I worked on a battery management design a while back, and all the ICs required individual external trimming, and most would not perform reliably on batteries of all different conditions. Unfortunately, cheap analogue IC elements are subject to this kind of variation.

[Oliver]

motorollin wrote:
Are you saying that the battery might not actually be as bad as the computer thinks? Or that it's not actually fully charging it? Or both? Or neither? :-)

--
moto

The battery management IC may not be reporting an accurate assessment of the battery's state to the computer. The OS may then not indicate the accurate state to you, and may not make the appropriate power management decision at the appropriate time.

That is the most general way I can decribe it, without going into specific scenarios. Hope it makes sense.

Oliver