ProBook 6470b: hints and tips about how to properly healthy keep the battery

[MrDiamond]

ProBook 6470b - Windows 7 Ultimate 64 bit.

I've bought a 9 cell 6900 mAh battery which give a good autonomy in terms of hours of usage.
I always keep the laptop attached to the charger, because I need the max abilities of the CPU (Intel I5-3320M), so I setup the power plans of Windows 7 to let the CPU to reach the 100% of the frequency when plugged in; when on battery, instead, I setup the CPU between 5% and 50%.

Well: I see that when the battery, from 100% reachs the 97% of the charge, will start to charge again: I noticed that my ProBook keeps the battery from 97% - 100% range (keep in mind that is always attached to the charger): I think that the BIOS/firmware has been designed to act in this way, and I'm fine with this, because is very quick to charge from 97% to 100% and also because there is no heat at all, but on the service manual I didn't see anything about such threshold: so, is ok?

On the service manual, on the page 131, I only seen that there is available an utility called "Advanced System Diagnostics", which also give the ability to recalibrate the battery; I also read on other websites that would be a good thing to do, at least once a month, a fully discharge/charge cycle: is really necessary? To me sound like a way to put the battery under stress.

So: can someone give me hints and tips to properly keep the health of the battery? Or maybe I just have to enjoy it without "tricks"? I think that most of the suggestions around are almost myths to debunk, am I right?

Kind regards.

[iomare · Accepted solution]

Hi,

Take a look at this HP support page about keeping batteries healthy:

https://support.hp.com/us-en/document/c01297640

Yes, I think it is best not to think too much about the battery and enjoy the PC, batteries will always get worse over time plugged in or not. I usally replace every  2 years. 

Hope it helps,

David 

[MrDiamond]

Yes, it was helpful.

However I noticed a strange thing, which I cannot figure out:

Sometime - not always - when I put my laptop to sleep (suspend not hibernation), let say I put it in such state when the battery percentage is at 98%, and the next day I wake it up from the suspend state (eg after 11hours) Windows reports the battery to a greater percentage: 100%! What this means? Is just a fault of the battery gauge or could mean that the battery could have some issue?