[EMAIL PROTECTED] wrote:
What if I have laptop plugged into an outlet? Battery should last years doing "echo -n mem .." then right?
Lithium-ion batteries have little-to-no memory effect. The worst thing you can do to a lithium ion battery is deep- cycle it. That is, run it all the way down, then run it all the way back up. The main killer of lithium ion batteries is, funny enough, time. lithium ion batteries have a shelf life. They have a predictable capacity loss profile. If you keep the battery 100% charged, you'll permanently lose approximately 20% of the battery's capacity per year (given normal environmental conditions). The best way to keep your battery fresh and capacity as high as possible is to keep it cold and keep it at a sub-100% charge. For instance, at a 40% charge level, you only lose 2% total capacity per year at 0 degrees C. Note that this is different from the self-discharge rate -- lion batteries typically discharge at a rate of 5% per month (or so) almost regardless of temperature. so, the short answer is: no, that won't have any effect on how long your battery lasts. If you want your battery to last, take it out of the machine at 40% charge and put it in the freezer. Then, when you want to use it, pull it out and let it thaw, charge, then use it. Inconvenient, wouldn't you say? such is the life of batteries :\ -kelsey -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
