Thread: Leaving Charger Connected - Battery Life
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TA-t3 is offline TA-t3
2008-02-22 , 10:27
Posts: 3,841 | Thanked: 1,079 times | Joined on Nov 2006
#14
Originally Posted by GeneralAntilles View Post
A big capacitor to keep the device on for about 15 seconds during a battery change is one of my major requests for the N900. Most of the old iBooks and Powerbooks had this ability. Shut the lid, swap the battery, and open it back up—you'll still be up and read to go.
If I'm not mistaken the Dell Axim PDAs have a capacitor like you describe. My Sharp Zaurus PDA actually has a separate, small NiCd rechargable battery that keeps it going[*] for quite a while with the main lithium battery out.

Maybe an N900 could combine a capacitor with the newer Linux kernel's 'software suspend' mode or something, which might make it more feasible. Actually, it could be possible to just use a full suspend mode (=save RAM to card) and do without a capacitor, even..

[*] - as you may know, PDAs have their "filesystem" in volatile RAM (except the newest Palm models), so by 'going' I mean that it keeps the RAM (thus the PDAs content) alive, it can't run off it.
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