9:52 a.m.
I've noticed this only a few times, and it doesn't always happen, but
there isn't enough data to form a pattern.
Fedora Workstation 28
kernel varies but mainly I use Rawhide kernels to catch bugs
[ 0.000000] DMI: HP HP Spectre Notebook/81A0, BIOS F.40 02/26/2018
Battery is 100% charged. Computer is powered off via GNOME power
button icon thingy. Unplug power cord. Go to bed. Morning I plug power
back into the laptop and boot, and the battery icon indicates
charging, click on that icon and it reports it's charging the batter,
will take 40 minutes until full (80%).
So how the heck is the battery losing 20% when the laptop is powered
off? I have in the past couple weeks left the laptop overnight in
suspend to RAM mode, unplugged from power, and in the morning it's 90%
charged, which makes some sense I guess even though that still seems
like a lot of loss. But 20% powered off makes no sense.
The first time this happened I was suspicious of my own memory: OK
maybe I left it in suspend even though I'm 99% certain I powered it
off, but which is more likely, that I'm being spacey or that the
laptop discharged 20% overnight while powered off? But this time I am
certain it was powered off.
Anyway, it's been charging a bit before I ran this:
[chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
native-path: BAT1
vendor: Hewlett-Packard
model: PABAS0241231
serial: 41167
power supply: yes
updated: Thu 17 May 2018 08:42:18 AM MDT (45 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 27.412 Wh
energy-empty: 0 Wh
energy-full: 31.5161 Wh
energy-full-design: 38.115 Wh
energy-rate: 6.7067 W
voltage: 8.743 V
time to full: 36.7 minutes
percentage: 86%
capacity: 82.6869%
technology: lithium-ion
icon-name: 'battery-full-charging-symbolic'
History (rate):
1526568138 6.707 charging
[chris@f28h ~]$
Pretty weird.
--
Chris Murphy
10:07 a.m.
On 2018-05-17 at 08:52:08 Chris Murphy wrote:
I've noticed this only a few times, and it doesn't always
happen, but
there isn't enough data to form a pattern.
Fedora Workstation 28
kernel varies but mainly I use Rawhide kernels to catch bugs
[ 0.000000] DMI: HP HP Spectre Notebook/81A0, BIOS F.40 02/26/2018
Battery is 100% charged. Computer is powered off via GNOME power
button icon thingy. Unplug power cord. Go to bed. Morning I plug power
back into the laptop and boot, and the battery icon indicates
charging, click on that icon and it reports it's charging the batter,
will take 40 minutes until full (80%).
So how the heck is the battery losing 20% when the laptop is powered
off? I have in the past couple weeks left the laptop overnight in
suspend to RAM mode, unplugged from power, and in the morning it's 90%
charged, which makes some sense I guess even though that still seems
like a lot of loss. But 20% powered off makes no sense.
The first time this happened I was suspicious of my own memory: OK
maybe I left it in suspend even though I'm 99% certain I powered it
off, but which is more likely, that I'm being spacey or that the
laptop discharged 20% overnight while powered off? But this time I am
certain it was powered off.
Anyway, it's been charging a bit before I ran this:
[chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
native-path: BAT1
vendor: Hewlett-Packard
model: PABAS0241231
serial: 41167
power supply: yes
updated: Thu 17 May 2018 08:42:18 AM MDT (45 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 27.412 Wh
energy-empty: 0 Wh
energy-full: 31.5161 Wh
energy-full-design: 38.115 Wh
energy-rate: 6.7067 W
voltage: 8.743 V
time to full: 36.7 minutes
percentage: 86%
capacity: 82.6869%
technology: lithium-ion
icon-name: 'battery-full-charging-symbolic'
History (rate):
1526568138 6.707 charging
[chris@f28h ~]$
Pretty weird.
What happens if you also remove the battery during the power off period?
--
Regards,
Erik P. Olsen
11:41 a.m.
On Thu, 17 May 2018 17:07:55 +0200
Erik P. Olsen wrote:
What happens if you also remove the battery during the power off
period?
Yea, I don't know if laptop makers are copying Android now, but I've
got a Samsung Android camera which you can tell to "power off", but
it wants to be "helpful" and boot really fast so it doesn't really
go all the way off unless you pop the battery out and back in.
2:30 p.m.
On 2018-05-17 at 12:41:49 Tom Horsley wrote:
On Thu, 17 May 2018 17:07:55 +0200
Erik P. Olsen wrote:
> What happens if you also remove the battery during the power off period?
Yea, I don't know if laptop makers are copying Android now, but I've
got a Samsung Android camera which you can tell to "power off", but
it wants to be "helpful" and boot really fast so it doesn't really
go all the way off unless you pop the battery out and back in.
The battery might be sick.
--
Regards,
Erik P. Olsen
4:24 p.m.
On Thu, May 17, 2018 at 9:07 AM, Erik P. Olsen <epodata(a)gmail.com> wrote:
On 2018-05-17 at 08:52:08 Chris Murphy wrote:
> I've noticed this only a few times, and it doesn't always happen, but
> there isn't enough data to form a pattern.
>
> Fedora Workstation 28
> kernel varies but mainly I use Rawhide kernels to catch bugs
>
> [ 0.000000] DMI: HP HP Spectre Notebook/81A0, BIOS F.40 02/26/2018
>
> Battery is 100% charged. Computer is powered off via GNOME power
> button icon thingy. Unplug power cord. Go to bed. Morning I plug power
> back into the laptop and boot, and the battery icon indicates
> charging, click on that icon and it reports it's charging the batter,
> will take 40 minutes until full (80%).
>
> So how the heck is the battery losing 20% when the laptop is powered
> off? I have in the past couple weeks left the laptop overnight in
> suspend to RAM mode, unplugged from power, and in the morning it's 90%
> charged, which makes some sense I guess even though that still seems
> like a lot of loss. But 20% powered off makes no sense.
>
> The first time this happened I was suspicious of my own memory: OK
> maybe I left it in suspend even though I'm 99% certain I powered it
> off, but which is more likely, that I'm being spacey or that the
> laptop discharged 20% overnight while powered off? But this time I am
> certain it was powered off.
>
> Anyway, it's been charging a bit before I ran this:
>
>
> [chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
> native-path: BAT1
> vendor: Hewlett-Packard
> model: PABAS0241231
> serial: 41167
> power supply: yes
> updated: Thu 17 May 2018 08:42:18 AM MDT (45 seconds ago)
> has history: yes
> has statistics: yes
> battery
> present: yes
> rechargeable: yes
> state: charging
> warning-level: none
> energy: 27.412 Wh
> energy-empty: 0 Wh
> energy-full: 31.5161 Wh
> energy-full-design: 38.115 Wh
> energy-rate: 6.7067 W
> voltage: 8.743 V
> time to full: 36.7 minutes
> percentage: 86%
> capacity: 82.6869%
> technology: lithium-ion
> icon-name: 'battery-full-charging-symbolic'
> History (rate):
> 1526568138 6.707 charging
>
> [chris@f28h ~]$
>
>
> Pretty weird.
>
>
What happens if you also remove the battery during the power off period?
It cannot be removed.
--
Chris Murphy
6:08 p.m.
Check this out. After fully charging from this morning?
[chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
native-path: BAT1
vendor: Hewlett-Packard
model: PABAS0241231
serial: 41167
power supply: yes
updated: Thu 17 May 2018 04:59:54 PM MDT (14 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: fully-charged
warning-level: none
energy: 29.1522 Wh
energy-empty: 0 Wh
energy-full: 29.1522 Wh
energy-full-design: 38.115 Wh
energy-rate: 0 W
voltage: 8.671 V
percentage: 100%
capacity: 76.4848%
technology: lithium-ion
icon-name: 'battery-full-charged-symbolic'
[chris@f28h ~]$
How does capacity go from 82.68% this morning to 76.48% this
afternoon? This laptop is ~18 months old.
[root@f28h ~]# cat /sys/class/power_supply/BAT1/cycle_count
0
That's obviously bogus. I'd say 75% of the time I'm working on power,
the other 25% or less of the time it's running on battery. It gets
battery usage once a week or so.
Chris Murphy
7 p.m.
On Thu, May 17, 2018 at 05:08:42PM -0600, Chris Murphy wrote:
Check this out. After fully charging from this morning?
[chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
native-path: BAT1
vendor: Hewlett-Packard
model: PABAS0241231
serial: 41167
power supply: yes
updated: Thu 17 May 2018 04:59:54 PM MDT (14 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: fully-charged
warning-level: none
energy: 29.1522 Wh
energy-empty: 0 Wh
energy-full: 29.1522 Wh
energy-full-design: 38.115 Wh
energy-rate: 0 W
voltage: 8.671 V
percentage: 100%
capacity: 76.4848%
technology: lithium-ion
icon-name: 'battery-full-charged-symbolic'
[chris@f28h ~]$
How does capacity go from 82.68% this morning to 76.48% this
afternoon? This laptop is ~18 months old.
Doesn't make sense, unless this morning it was "percentage" that was 82.68,
not "capacity". (I've certainly misread things like that, and this stuff
is hard to understand because there are no explanations given.)
[root@f28h ~]# cat /sys/class/power_supply/BAT1/cycle_count
0
That's obviously bogus. I'd say 75% of the time I'm working on power,
the other 25% or less of the time it's running on battery. It gets
battery usage once a week or so.
I think what that means is that the battery design was such that when
new the battery would hold 38.115 Wh, but it has now degraded so that
it only holds 29.1522 Wh.
if you divide 29.1522/38.115 you get 0.764848, hence the "capacity"
now that it has aged a year and a half, is 76.4848% of the original 38.115.
You'll notice that "capacity" is 100%, which means it's fully charged
for its current place in the battery lifetime curve, i.e., 29.1522 Wh.
Lithium Ion batteries age like that, its normal. Eventually you get
fed up with it and buy a new battery or a new laptop (or phone or
whatever gizmo we're talking about). The very reason why after a lot of
customer furor, Apple agreed to replace iphone batteries cheaply rather
than raking all those customers of the coals of overly-priced replacement
batteries.
--
---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us -----------------------------
God made him who had no sin
to be sin for us, so that in him
we might become the righteousness of God."
--------------------------- Corinthians 5:21 ---------------------------------
7:21 p.m.
On Thu, May 17, 2018 at 6:00 PM, Fred Smith
<fredex(a)fcshome.stoneham.ma.us> wrote:
On Thu, May 17, 2018 at 05:08:42PM -0600, Chris Murphy wrote:
> Check this out. After fully charging from this morning?
>
> [chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
> native-path: BAT1
> vendor: Hewlett-Packard
> model: PABAS0241231
> serial: 41167
> power supply: yes
> updated: Thu 17 May 2018 04:59:54 PM MDT (14 seconds ago)
> has history: yes
> has statistics: yes
> battery
> present: yes
> rechargeable: yes
> state: fully-charged
> warning-level: none
> energy: 29.1522 Wh
> energy-empty: 0 Wh
> energy-full: 29.1522 Wh
> energy-full-design: 38.115 Wh
> energy-rate: 0 W
> voltage: 8.671 V
> percentage: 100%
> capacity: 76.4848%
> technology: lithium-ion
> icon-name: 'battery-full-charged-symbolic'
>
> [chris@f28h ~]$
>
> How does capacity go from 82.68% this morning to 76.48% this
> afternoon? This laptop is ~18 months old.
Doesn't make sense, unless this morning it was "percentage" that was
82.68,
not "capacity". (I've certainly misread things like that, and this stuff
is hard to understand because there are no explanations given.)
>
> [root@f28h ~]# cat /sys/class/power_supply/BAT1/cycle_count
> 0
>
> That's obviously bogus. I'd say 75% of the time I'm working on power,
> the other 25% or less of the time it's running on battery. It gets
> battery usage once a week or so.
I think what that means is that the battery design was such that when
new the battery would hold 38.115 Wh, but it has now degraded so that
it only holds 29.1522 Wh.
if you divide 29.1522/38.115 you get 0.764848, hence the "capacity"
now that it has aged a year and a half, is 76.4848% of the original 38.115.
You'll notice that "capacity" is 100%, which means it's fully charged
for its current place in the battery lifetime curve, i.e., 29.1522 Wh.
Lithium Ion batteries age like that, its normal. Eventually you get
fed up with it and buy a new battery or a new laptop (or phone or
whatever gizmo we're talking about). The very reason why after a lot of
customer furor, Apple agreed to replace iphone batteries cheaply rather
than raking all those customers of the coals of overly-priced replacement
batteries.
First posting for this thread is from this morning:
energy-full: 31.5161 Wh
energy-full-design: 38.115 Wh
...
percentage: 86%
capacity: 82.6869%
And this afternoon.
energy-full: 29.1522 Wh
energy-full-design: 38.115 Wh
...
percentage: 100%
capacity: 76.4848%
Somehow energy-full has changed quite a bit in just 1/2 a day.
--
Chris Murphy
9:31 p.m.
On Thu, May 17, 2018 at 06:21:07PM -0600, Chris Murphy wrote:
On Thu, May 17, 2018 at 6:00 PM, Fred Smith
<fredex(a)fcshome.stoneham.ma.us> wrote:
> On Thu, May 17, 2018 at 05:08:42PM -0600, Chris Murphy wrote:
>> Check this out. After fully charging from this morning?
>>
>> [chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
>> native-path: BAT1
>> vendor: Hewlett-Packard
>> model: PABAS0241231
>> serial: 41167
>> power supply: yes
>> updated: Thu 17 May 2018 04:59:54 PM MDT (14 seconds ago)
>> has history: yes
>> has statistics: yes
>> battery
>> present: yes
>> rechargeable: yes
>> state: fully-charged
>> warning-level: none
>> energy: 29.1522 Wh
>> energy-empty: 0 Wh
>> energy-full: 29.1522 Wh
>> energy-full-design: 38.115 Wh
>> energy-rate: 0 W
>> voltage: 8.671 V
>> percentage: 100%
>> capacity: 76.4848%
>> technology: lithium-ion
>> icon-name: 'battery-full-charged-symbolic'
>>
>> [chris@f28h ~]$
>>
>> How does capacity go from 82.68% this morning to 76.48% this
>> afternoon? This laptop is ~18 months old.
>
> Doesn't make sense, unless this morning it was "percentage" that was
82.68,
> not "capacity". (I've certainly misread things like that, and this
stuff
> is hard to understand because there are no explanations given.)
>>
>> [root@f28h ~]# cat /sys/class/power_supply/BAT1/cycle_count
>> 0
>>
>> That's obviously bogus. I'd say 75% of the time I'm working on
power,
>> the other 25% or less of the time it's running on battery. It gets
>> battery usage once a week or so.
>
> I think what that means is that the battery design was such that when
> new the battery would hold 38.115 Wh, but it has now degraded so that
> it only holds 29.1522 Wh.
>
> if you divide 29.1522/38.115 you get 0.764848, hence the "capacity"
> now that it has aged a year and a half, is 76.4848% of the original 38.115.
>
> You'll notice that "capacity" is 100%, which means it's fully
charged
> for its current place in the battery lifetime curve, i.e., 29.1522 Wh.
>
> Lithium Ion batteries age like that, its normal. Eventually you get
> fed up with it and buy a new battery or a new laptop (or phone or
> whatever gizmo we're talking about). The very reason why after a lot of
> customer furor, Apple agreed to replace iphone batteries cheaply rather
> than raking all those customers of the coals of overly-priced replacement
> batteries.
First posting for this thread is from this morning:
energy-full: 31.5161 Wh
energy-full-design: 38.115 Wh
...
percentage: 86%
capacity: 82.6869%
And this afternoon.
energy-full: 29.1522 Wh
energy-full-design: 38.115 Wh
...
percentage: 100%
capacity: 76.4848%
Somehow energy-full has changed quite a bit in just 1/2 a day.
my guess is it jumps in discrete "quanta", at least as reported, rather
than microscopic amounts. but I haven't watched mine closely enough
to see.
--
---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us -----------------------------
"For him who is able to keep you from falling and to present you before his
glorious presence without fault and with great joy--to the only God our Savior
be glory, majesty, power and authority, through Jesus Christ our Lord, before
all ages, now and forevermore! Amen."
----------------------------- Jude 1:24,25 (niv) -----------------------------
10:25 a.m.
On Thu, May 17, 2018 at 6:21 PM, Chris Murphy <lists(a)colorremedies.com> wrote:
On Thu, May 17, 2018 at 6:00 PM, Fred Smith
<fredex(a)fcshome.stoneham.ma.us> wrote:
> On Thu, May 17, 2018 at 05:08:42PM -0600, Chris Murphy wrote:
>> Check this out. After fully charging from this morning?
>>
>> [chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
>> native-path: BAT1
>> vendor: Hewlett-Packard
>> model: PABAS0241231
>> serial: 41167
>> power supply: yes
>> updated: Thu 17 May 2018 04:59:54 PM MDT (14 seconds ago)
>> has history: yes
>> has statistics: yes
>> battery
>> present: yes
>> rechargeable: yes
>> state: fully-charged
>> warning-level: none
>> energy: 29.1522 Wh
>> energy-empty: 0 Wh
>> energy-full: 29.1522 Wh
>> energy-full-design: 38.115 Wh
>> energy-rate: 0 W
>> voltage: 8.671 V
>> percentage: 100%
>> capacity: 76.4848%
>> technology: lithium-ion
>> icon-name: 'battery-full-charged-symbolic'
>>
>> [chris@f28h ~]$
>>
>> How does capacity go from 82.68% this morning to 76.48% this
>> afternoon? This laptop is ~18 months old.
>
> Doesn't make sense, unless this morning it was "percentage" that was
82.68,
> not "capacity". (I've certainly misread things like that, and this
stuff
> is hard to understand because there are no explanations given.)
>>
>> [root@f28h ~]# cat /sys/class/power_supply/BAT1/cycle_count
>> 0
>>
>> That's obviously bogus. I'd say 75% of the time I'm working on
power,
>> the other 25% or less of the time it's running on battery. It gets
>> battery usage once a week or so.
>
> I think what that means is that the battery design was such that when
> new the battery would hold 38.115 Wh, but it has now degraded so that
> it only holds 29.1522 Wh.
>
> if you divide 29.1522/38.115 you get 0.764848, hence the "capacity"
> now that it has aged a year and a half, is 76.4848% of the original 38.115.
>
> You'll notice that "capacity" is 100%, which means it's fully
charged
> for its current place in the battery lifetime curve, i.e., 29.1522 Wh.
>
> Lithium Ion batteries age like that, its normal. Eventually you get
> fed up with it and buy a new battery or a new laptop (or phone or
> whatever gizmo we're talking about). The very reason why after a lot of
> customer furor, Apple agreed to replace iphone batteries cheaply rather
> than raking all those customers of the coals of overly-priced replacement
> batteries.
First posting for this thread is from this morning:
energy-full: 31.5161 Wh
energy-full-design: 38.115 Wh
...
percentage: 86%
capacity: 82.6869%
And this afternoon.
energy-full: 29.1522 Wh
energy-full-design: 38.115 Wh
...
percentage: 100%
capacity: 76.4848%
Somehow energy-full has changed quite a bit in just 1/2 a day.
And this morning, again powered off and unplugged overnight.
energy-full: 27.2041 Wh
energy-full-design: 38.115 Wh
I'm gonna use it in battery all day and let it discharge entirely and
charge it from that state, and see if any of this changes.
--
Chris Murphy
5:14 p.m.
state: fully-charged
warning-level: none
energy: 27.7816 Wh
energy-empty: 0 Wh
energy-full: 27.7816 Wh
energy-full-design: 38.115 Wh
energy-rate: 0 W
voltage: 8.648 V
percentage: 100%
capacity: 72.8889%
technology: lithium-ion
energy-full did bounce back ~0.5, but basically in one day the
energy-full/capacity% dropped nearly 10%. Sounds like a sick battery
or something.
Chris Murphy
4:28 p.m.
Sick or worn out.
On 18 May 2018 at 23:14, Chris Murphy <lists(a)colorremedies.com> wrote:
state: fully-charged
warning-level: none
energy: 27.7816 Wh
energy-empty: 0 Wh
energy-full: 27.7816 Wh
energy-full-design: 38.115 Wh
energy-rate: 0 W
voltage: 8.648 V
percentage: 100%
capacity: 72.8889%
technology: lithium-ion
energy-full did bounce back ~0.5, but basically in one day the
energy-full/capacity% dropped nearly 10%. Sounds like a sick battery
or something.
Chris Murphy
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11:06 a.m.
On Fri, May 18, 2018 at 04:14:44PM -0600, Chris Murphy wrote:
state: fully-charged
warning-level: none
energy: 27.7816 Wh
energy-empty: 0 Wh
energy-full: 27.7816 Wh
energy-full-design: 38.115 Wh
energy-rate: 0 W
voltage: 8.648 V
percentage: 100%
capacity: 72.8889%
technology: lithium-ion
energy-full did bounce back ~0.5, but basically in one day the
energy-full/capacity% dropped nearly 10%. Sounds like a sick battery
or something.
I'd try retraining the battery for longer run-time until empty: I
described the procedure to do that a few weeks ago:
https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.o...
HTH, and good luck!
Wolfgang
10:56 p.m.
On 05/21/2018 09:06 AM, Wolfgang Pfeiffer wrote:
I'd try retraining the battery for longer run-time until empty:
Depleting the battery fully does not extend the run-time of the
battery. It will sometimes re-calibrate the battery controller and
improve its estimates, but it does reduce the battery's ability to hold
a charge.
https://arstechnica.com/gadgets/2014/04/ask-ars-the-best-way-to-use-a-lit...
1:34 p.m.
The guidelines quoted are also a bit dated. Modern charge controllers
do a lot of control of the battery conditions based on temperature. If
you look at your battery, you will see that there are 4 contacts. two
are the charge current and two are to a temperature sensor. The charge
controller monitors both current and voltage during charge, and
temperature is used to adjust the charge current.
In addition, when you are plugged in, if the equipment designer
chose the appropriate charge controller, the battery is essentially
disconnected from the load during charging. This allows charging to
proceed with the appropriate control of the current, voltage and
temperature. In essence the charge controller incorporates the
switching to control when the battery is used vs the line for the load.
Other things are incorporated into the battery management that
includes switching control for alternate voltages in some cases and max
discharge setting.
Many of these charge controllers are propriatary, so you may
not find the full information on the ones you can find in your laptop
or cellphone, and many of the "modules" don't include the advanced
features or have them turned off or disconnected due to the complexity
of wiring and understanding the settings.
All of this boils down to the fact that modern battery usage is
much more complex than just charge/discharge cycles and depth of
discharge.
On Mon, 2018-05-21 at 20:56 -0700, Gordon Messmer wrote:
On 05/21/2018 09:06 AM, Wolfgang Pfeiffer wrote:
>
> I'd try retraining the battery for longer run-time until empty:
Depleting the battery fully does not extend the run-time of the
battery. It will sometimes re-calibrate the battery controller and
improve its estimates, but it does reduce the battery's ability to
hold
a charge.
https://arstechnica.com/gadgets/2014/04/ask-ars-the-best-way-to-use-a
-lithium-ion-battery-redux/
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sts.fedoraproject.org/message/OU2GRNDH5TX5QUX7J6AQRPYRGPAX74AT/
1:57 a.m.
Howard Howell, Gordon Messmer:
To both of you thanks a lot for the insight - I'm not a pro when it
comes to battery chemistry/technology. So I'm definitely grateful for
information in that regard.
For the sake of brevity, as a response, only a few lines:
My knowledge about batteries only comes from using and maintaining
them. I had extremely good experiences with a cellphone lio-on battery
that I drained every 2 weeks or so for about seven years (starting
2009). Only after these many years the battery started having a
slightly smaller run-time capability. It wasn't even broken at the
time I replaced it with a new one: it simply lost charge a little
earlier than in the beginning when I used it ..
From what I now know is that it does not seem to be a big problem to
*occasionally* re-calibrate li-on batteries. Even the arstechnica page
from 2014 only seems to advise against re-calibration "all the time".
Nevertheless: being careful to not re-calibrate every few weeks seems
to be a good idea to me now. My previously linked (and in this thread
mentioned) post from a few weeks ago was probably a little too
optimistic: to advise there against *frequent* re-calibrating would
have been a good idea.
Again: Thanks!
Regards,
Wolfgang
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participants (8)
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Chris Murphy -
Erik P. Olsen -
Fred Smith -
Gordon Messmer -
Howard Howell -
Silvia Sánchez -
Tom Horsley -
Wolfgang Pfeiffer