I wonder what's the best pattern to use the notebook battery for long
lifespan?

I've read to use battery until entirely down and recharge again... a few
times in a year.
But I suppose this advice is not intended to follow on a daily basis as a
battery can only be recharged for a limited amount of times.
So I often use my notebook on mains adaptor. Battery drops to 95% and gets
recharged etc.

Any expert advice?


--
regards,

|\ /|
| \/ |@rk
\../
\/os

In news:4831bde0$0$14347$e4fe514c@news.xs4all.nl,
Linea Recta typed on Mon, 19 May 2008 19:50:18 +0200:
Most laptop batteries will only last 18 to 24 months if left plugged
into the laptop on AC power. If you use it on battery power
occasionally, it will be less. To make them last, leave them out and
charge them about twice a year. They should last 10 years or longer that
way. Download the free BattStat and checkout how well you are doing with
the wear factor on the battery. The higher the percentage, the less the
battery will last.

http://users.rcn.com/tmtalpey/BattStat/

--
Bill

Remove the battery when you are not using it.

Use it somewhat a few times a year. Don't draw it all the way down (not
below 20% if even that low). Charge it to about 60% for storage until
next use.

The advice you read is outdated and is for NiCD batteries, which are no
longer used. Modern batteries are LiON. They can last 10 years if
cared for properly, recognizing that no matter what you do, they have
only mid-hundreds of actual use cycles (whether you use those in one
year or over 10 years).


Linea Recta wrote:

"Linea Recta" <mccm.vos@abc.invalid> wrote in message
news:4831bde0$0$14347$e4fe514c@news.xs4all.nl...
This is not for longevity of battery life but to recalibrate the charge
monitor circuit. How often you do this depends on your battery usage
pattern. If you only use the battery occasionally then once a year is
probably adequate.

Remove the battery from the laptop if you are using AC power and it is not
being charged. This is because Li-ion batteries are destroyed by even
modest amounts of heat and laptops get warm in use. However, you should
also bear in mind that these batteries don't like being idle, so you should
endeavour to use them occasionally just to keep the chemistry ticking over.
Properly cared for, Li-ion batteries can outlast any of the other battery
types (though they currently have one of the lowest charge/discharge cycle
lives*). The oldest that I personally own are now 14 years old (though they
are not laptop batteries, but they are otherwise the same). I don't think
anyone has established a perfect usage pattern to extract maximum possible
life. This would be difficult anyway as the life is dictated by a variety
of factors and some life factors are measured by time whereas others are
measured by actual usage (i.e. charge/discharge cycles).

*Most other battery types life expire due to other reasons before all the
charge cycles are extracted.

"BillW50" <BillW50@aol.kom> schreef in bericht
news:4831e1cd$0$30640$834e42db@reader.greatnowhere .com...

Gosh, that's a complete different story than what it says in my manual! But
then I suppose manufacturers have more interest in selling new batteries...



Thanks for the info. I DL'ed the program and I'll get into this in detail
ASAP.
So first of all I'll be running to take the battery out of the notebook.
But... is there no danger of losing data or settings when I cut the mains
adapter? (I never leave any adapters plugged in when not in use!)



--
regards,

|\ /|
| \/ |@rk
\../
\/os

"Barry Watzman" <WatzmanNOSPAM@neo.rr.com> schreef in bericht
news:48321f29$0$31729$4c368faf@roadrunner.com...

It is what the manual of my notebook says! Normal use: using it all the way
until notebook shuts down and then recharging again.


It is.



OK, I'll take it out and start using it as advised here. (Notebook is only
about a month old yet)



--
thanks,

|\ /|
| \/ |@rk
\../
\/os

"M.I.5¾" <no.one@no.where.NO_SPAM.co.uk> schreef in bericht
news:4832739c$1_1@glkas0286.greenlnk.net...

Right, a few times a year I understood. I think it will be empty bu then,
because I noticed self-discharge already after a few days to about 95%...



So this seems to be a many-aspect issue... Do I store the battery in
refrigerator?

One other thing: when I take out the battery and (after use) also disconnect
the mains adapter, are there no settings in the notebook being lost? BIOS
etc?



--
regards,

|\ /|
| \/ |@rk
\../
\/os

If you want a UPS, get a UPS. A UPS for a laptop (350VA is plenty large
for just a laptop) is about $30; a battery might be $200. Your choice.

UPS or no UPS, there is no danger of losing anything unless the power
fails while the computer is on and actually being used.


Linea Recta wrote:

The advice to always use the battery "all the way down" is still
outdated information. NiCD batteries had a "memory effect" and needed
to be fully discharged. LiON batteries have no such effect, and in fact
very low discharges are harmful to them.


Linea Recta wrote:

While in THEORY putting the battery in the refrigerator might be
beneficial, the difference between that and normal room temp storage is
so small you will never see it.

You won't lose anything from having no power source at all while the
laptop it off. It has another battery inside it (that you can't remove)
to maintain settings and keep the time-of-day clock running. Changing
that battery is a service task, as it usually requires disassembly of
the laptop, but that battery should last for years. In some cases, if
the laptop isn't used for a long time (weeks to months) that battery
(which may or may not be rechargeable) may be drained if it is
rechargeable. In that case, settings and time/date will be lost, but
it's of no great consequence, and with most laptops they would have been
lost even if the main battery had been installed.

Linea Recta wrote:

"Barry Watzman" <WatzmanNOSPAM@neo.rr.com> wrote in message
news:48337813$0$20190$4c368faf@roadrunner.com...
This is a matter of some controversy, and unfortunately the internet is of
no help trying to get some sort of answer. Whilst it is true that Li-ion
batteries should never be discharged below an established end point voltage
per cell of 3.0 volts (2.5 volts for some chemistries). There is a body of
opinion that they should not routinely be discharged even that far. I have
found no evidence that this is the case except from anecdotal sources.
Indeed at least 3 of the batteries that I have that are 14 years old have
regularly (though not frequently) been discharged to their end point cut off
(which in nearly all equipment is set to 3.2 volts to provide a buffer zone
against over discharge).

The one myth that does seem to survive in laptop owner's manuals is that the
batteries should be regularly fully discharged. For Li-ion batteries this
is most certainly not the case, and they can be recharged from partially
discharged with no ill effect whatsoever. From a cell chemistry viewpoint,
here is no requirement to fully discharge a Li-ion battery ever.