[kwlug-disc] OT: Laptop battery life

[CrankyOldBugger]

I'm going to take a wild guess that the utility you mentioned is TLP
http://linrunner.de/en/tlp/docs/tlp-linux-advanced-power-management.html

A review lives at
http://www.webupd8.org/2013/04/improve-power-usage-battery-life-in.html



On Tue, 24 Nov 2015 at 11:23 B.S. <bs27975 at yahoo.ca> wrote:

> Are you draining the battery all the way down before charging?
>
> Are you leaving AC plugged in at all times unless otherwise unavoidable? I
> see contradictory opinions regarding such trickle charging.
>
> NiMH is not supposed to have memory, but in practice appears to. So
> reconditioning is supposed to help - complete drain, complete charge,
> complete drain. Or something. There is/was even a utility in the repository
> to assist this. (Can't find it at the moment.)
>
> Myself, I try to do anything I can to not use the battery. For most of my
> use cases to date, I only need to be on battery for at most 3 hours at any
> given point, e.g. Library. Otherwise, even at Tim's or in a meeting room,
> I'll hook up the AC - I even carry a 2 prong extension cord to facilitate
> that. And my working assumption is that laptops are AC powered only, the
> batteries being so expensive and in essence useless.
>
> $60 for a battery is just silly. Unavoidable, but nevertheless. Never mind
> most laptops won't power up on AC without the battery - but at least it can
> be a completely dead battery.
>
> Perhaps my good experience buying UPS batteries will be true for you here
> - http://batterywholesale.ca/ on Lawrence does batteries much cheaper
> than places like Canada Computers. Perhaps they can order something for
> you? He's responsive on e-mail.
>
> >________________________________
> > From: Khalid Baheyeldin <kb at 2bits.com>
> >To: KWLUG discussion <kwlug-disc at kwlug.org>
> >Sent: Tuesday, November 24, 2015 10:15 AM
> >Subject: [kwlug-disc] OT: Laptop battery life
> >
> >
> >
> >Since this laptop is an older model (BIOS says March 2009), I had to
> replace the battery on it quite a few times.
> >
> >What I do is go to Canada Computers web site, and check the laptop model
> and get the battery that matches, opting for the larger capacity one. The
> cost is reasonable at $60 for the 6600 mAH version (regular one is 4400
> mAH).
> >
> >The problem is, while the initial ones lasted for 2.5 to 3 years, the
> newer ones do not last that long. Perhaps 1.5 years or so.
> >
> >So, the questions are:
> >- Did anyone experience such short battery life, specially in aftermarket
> batteries?
> >- Can the battery be rebuilt, rather than buying a new one with the old
> one not having a future in being properly recycled?
> >
> >Additional info:
> >
> >Here is: /proc/acpi/battery/BAT0/info
> >present:                 yes
> >design capacity:         6600 mAh
> >last full capacity:      663 mAh
> >battery technology:      rechargeable
> >design voltage:          10800 mV
> >design capacity warning: 0 mAh
> >design capacity low:     0 mAh
> >cycle count:              0
> >capacity granularity 1:  0 mAh
> >capacity granularity 2:  663 mAh
> >model number:            PA3534U-1BAS
> >serial number:           0001
> >battery type:            Li-ion
> >OEM info:
> >
> >And here is: /proc/acpi/battery/BAT0/state
> >present:                 yes
> >capacity state:          ok
> >charging state:          charging
> >present rate:            448 mA
> >remaining capacity:      637 mAh
> >present voltage:         10800 mV
>
>
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>
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