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Idea #17870: Laptop battery management: sedentary mode

bug This idea is a duplicate of Idea #81: Power Management.
Written by mathieu the 5 Feb 09 at 18:36. Related project: Gnome. Status: New
Rationale
Most of the time, I use my laptop at home.
A fiend of mine did the same usage of her laptop. After a year she was unable to use it more than ten minutes on battery because it was always running on AC power with full charge of battery all the time.
Our modern laptops are equipped with Lithium-ion cells. To run correctly this kind of cells must make regular cycles of charge and discharge to have the best capacity.
But we have an other way to manage more efficiently the battery life.

25
votes
closed
Solution #1: Set the maximum battery charge on AC power
Written by mathieu the 5 Feb 09 at 18:36.
In order to preserve its battery's life, I would like to set the maximum percentage of charge (60% or 80% for example) when I'm not using it outdoor.

But if I have to use it outdoor, I want to release the limitation easily to get the maximum charge.
Finally, when I come back at home, I would like to use the battery power if the charge level is over the limitation setting, even if I have plugged the AC cable.

This trick will increase our Li-ion battery lifetime. Because if it is always completely charged when the laptop is running on AC power, its charging/discharging capacity will decrease quickly than if it is set on a lower value.
85
votes
closed
Solution #2: Automatic charge/discharge
Written by Mondane the 9 Feb 09 at 14:26.
The user shouldn't be bothered checking his battery and/or removing the battery when on AC power. Make the OS drain the battery on intervals so the battery stays intelligent when the laptop is on AC power.

The user should have the option the interrupt and revert the draining if he knows he needs a full battery and is leaving in a short time.

Propose your solution

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