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Groups > comp.sys.laptops.thinkpad > #582
| From | bp@www.zefox.net |
|---|---|
| Newsgroups | comp.sys.laptops.thinkpad |
| Subject | Re: Dead battery after storage on T400s |
| Date | 2025-02-08 20:33 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <vo8f2g$6mtr$1@dont-email.me> (permalink) |
| References | (7 earlier) <vmbb25$3ifk0$1@dont-email.me> <6789c619@news.ausics.net> <vmcm67$3tept$1@dont-email.me> <vo5li8$3kbd1$1@dont-email.me> <67a67fd1@news.ausics.net> |
Computer Nerd Kev <not@telling.you.invalid> wrote: > > I'd say the main inconsistency here is that in your previous post > you said you tested discharging the old battery and it had a > "little over one hour of endurance". Yet now it lasts four hours?! > I didn't become aware of the various low-power adjustments until after that series of experiments. I considered doing a manual capacity test, but decided against it being convinced a battery that old couldn't be much good and not wanting to harm it more. So, I ordered CS-IBT400NB from ShenZhen HENZENS Technology Co. via Amazon with fingers crossed. > A difference in run time like that makes no sense to me unless > you were working it hard or had power-hungry devices plugged into > it during the first test. I guess Windows could also have been > doing an upgrade in the background before, if you didn't disable > that during the test (or, since it's Windows, if it ignored you and > did something anyway). After I got the new battery and started exercising it per the seller's directions (which did seem to improve the performance) I gradually learned about low power settings. When the new battery clocked in at only 4.5 hours at low power settings, I got curious and re-tested the old battery with the new settings. Lo and behold, they were similar. The new battery is better, but for ~100$ not by much. I'm left wondering: 1. could a fifteen your old battery still have 80% capacity? 2. should a new 4400 mAh battery last more than 4.5 hours? 3. is there some better (more reproducible) way to test the batteries? Thanks for writing! bob prohaska
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Dead battery after storage on T400s bp@www.zefox.net - 2025-01-14 01:50 +0000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-14 18:11 +0000
Re: Dead battery after storage on T400s not@telling.you.invalid (Computer Nerd Kev) - 2025-01-15 06:40 +1000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-15 17:25 +0000
Re: Dead battery after storage on T400s Adrian Caspersz <email@here.invalid> - 2025-01-15 21:02 +0000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-15 22:03 +0000
Re: Dead battery after storage on T400s not@telling.you.invalid (Computer Nerd Kev) - 2025-01-16 07:44 +1000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-15 22:45 +0000
Re: Dead battery after storage on T400s Computer Nerd Kev <not@telling.you.invalid> - 2025-01-16 13:47 +1000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-16 16:10 +0000
Re: Dead battery after storage on T400s Computer Nerd Kev <not@telling.you.invalid> - 2025-01-17 12:53 +1000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-17 04:26 +0000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-02-07 19:05 +0000
Re: Dead battery after storage on T400s not@telling.you.invalid (Computer Nerd Kev) - 2025-02-08 07:49 +1000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-02-08 20:33 +0000
Re: Dead battery after storage on T400s not@telling.you.invalid (Computer Nerd Kev) - 2025-02-09 09:54 +1000
Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-02-09 01:44 +0000
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