If anyone cares to compare usage, condition and serial number, it might be entertaining....since nothing much else is going on the list. A better test to include the HD would be to create an Applescript to save the Calc demo file to disk, then reopen and run test again, repeat to Sleep.
It was interesting how almost all depleted at the same rate without HD activity. I wonder if the HD would stress them differently, respectively. I know that at least a couple are only good for 45-60minutes when on an airplane. While the batteries I own have seen minimal road use, i.e., mostly on AC, the other 'Unknowns' show the same two hour capacity...but they may have been used similarly.
Bottomline:
1. The battery 'remaining time' indicators aren't particularly useful, unless you are using the same battery and relying on the historical algorithm.
2. Given the lack of HD usage in the test, I'd assume 50% of these values as working times.
3. If you want to explore battery storage, battery rebuilds, etc. there are a number of posts in the archives.
http://lists.themacintoshguy.com/Lists/DuoList/List.html
If this isn't working try:
http://www.mail-archive.com/duolist%40lists.themacintoshguy.com/
*********************************************************************
Testing Protocol:
Battery charged to 100% in PB 2400/G3-320/112MG/30GB HD
Battery tested in PB 2400/603e/80MB/10GB HD
OS9.1 w/Energy Control Panel set for No Sleep for HD or Screen(Note - This results in minimal HD use...so should be considered best-case)
Battery run until Sleep warning is displayed
Testing App: Graphing Calculator Demo: Inequalities
Jeremy's Control Strip Battery Strenght for initial reading
Battery #1 - For Sale ($85 incl Shipping)
SN - 1M3ZJ-707-6ZU (History Unknown)Battery #2 - For Sale ($85 incl Shipping)
Start: 7 Bars/0:45 Minutes Indicated
Elapsed Time to Sleep: 2:00 Hr:Min
SN - 1M3ZJ-708-2CS (History Unknown)
Start: 8 Bars/0:55 Minutes Indicated
Elapsed Time to Sleep: 2.00 Hr:Min
Battery #3
SN - 1M3ZJ-905-08A (New Feb-03 w/minimal usage)
Start: 8 Bars/ 2:10 Minutes Indicated
Elapsed Time to Sleep: 2:06 Hr:Min
Battery #4
SN - 1M3ZJ-707-66F (New Sep-98)
Start: 7 Bars/ 0:47 Minutes Indicated
Elapsed Time to Sleep: 1:53 Hr:Min
Battery #5
SN - 1M3ZJ-707-2EU (Original OEM, circa early 1998)
Start: 8 Bars/49 Minutes Indicated
Elapsed Time to Sleep: 1:55 Hr:Min
Battery #6
SN - 1M3ZJ-708-3VU (History Unknown)
Start: Fails to be recognized by PB. Thoughts? Available for research. ;-)
Ralph Mawyer, Jr.
San Antonio, Texas
Associate Editor
mac2400 ... http://www.sineware.com/mac2400
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