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Lithium-based Batteries are not supposed to constantly sit a maximum charge. This damages them and reduces their lifespan. This is why some people take the battery out when using the laptop plugged in; but I don't want to do this, because then a power outage could cause data loss.

On the Samsung N150 netbook, there is a BIOS SETUP option to set the max battery charge level to 80%. Then you can leave the netbook plugged in, with the battery installed, and still preserve the battery's lifespan. I want to do it with my HP G42-230BR laptop, which does not have such a BIOS SETUP option. It should still be possible with software, right?

I have Googled and did not found how to do it: https://www.google.com/search?q=ubuntu|linux+partial+charge|recharge+battery+life

Do you know how to do it?

Thank you very much for your attention

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Looks like a duplicate of askubuntu.com/questions/22268/… – Ed Manet Sep 25 '12 at 18:59
@EdManet Thank you very much for pointing it out, and sorry for the duplicate. But that other question is also without answer, so I am still waiting for an answer. – Jorge Sep 25 '12 at 19:43
Check out the first answer to this question. It pretty much dispels the myth of battery life: askubuntu.com/questions/21351/… – Ed Manet Sep 25 '12 at 19:45
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That "myth" did not come from a chain email; it came from batteryuniversity.com/learn/article/… and was confirmed by Ars Technica and Life Hacker: arstechnica.com/gadgets/2011/02/… also, I cannot imagine that Samsung engineers would have the trouble to ship "Samsung battery life extender" (which does what I want) if it didn't help. – Jorge Sep 25 '12 at 20:13

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