I just learned that some Lenovo laptops include a utility that offers to limit battery charging capacity to within 0–80% in order to slow the attenuation of the battery lifespan:
How can I do this in Ubuntu?
The charging thresholds are, very unfortunately, firmware and vendor specific.
The Lenovo user is luckily provided with a solution outlined on ThinkWiki.
It basically says that you would have to install and load the
and write the desired charging thresholds to virtual files in
Then it will stop charging once it reached 80% and only start charging when it drops below 40%.
Toshiba and others might have a similar kernel module that exposes firmware functionality to the
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If you would like to extend the lifetime of your battery, I would suggest no single application, but some more measures:
However often it is claimed that batteries have some memory effect. This is not true. There were several studies which showed that the memory effect is a false claim. See also Repairfaq: NiCd Batteries do NOT have "memory".
I treat my batteries this way and they usually keep their abalities for years. My colleagues often wonder why my batteries don't get broken.
Did you check to see whether there is a BIOS setting on your laptop for this? My laptop had a Windows Application as well as a "Battery Life Extender" setting in the BIOS for this exact feature.