Battery Lifespan Question

Does anyone know about how long a battery is good before performance
quality begins to deteriorate? I have read in manuals where a battery
can be charged many times... but does anyone know about how long a
battery is good for before you should buy a replacement one? Have you
ever owned a phone and had to buy a second battery because the first one
would stop holding a charge or would get worn out?

I own a Sanyo 4900.

Thanks,
Eric

---

› See More: Battery Lifespan Question

I have been in the business for about 4 years now, and I have seen
everything from 3 months to 18 months is when I see most people
complaining about their battery life. It just depends on their usage
habits and how often they charge their phone.

Mike S.

[email protected] (Eric) wrote in article
<[email protected]>:
> Does anyone know about how long a battery is good before performance
> quality begins to deteriorate? I have read in manuals where a battery
> can be charged many times... but does anyone know about how long a
> battery is good for before you should buy a replacement one? Have you
> ever owned a phone and had to buy a second battery because the first one
> would stop holding a charge or would get worn out?
>
> I own a Sanyo 4900.
>
> Thanks,
> Eric
>

[posted via phonescoop.com - free web access to the alt.cellular groups]

Eric wrote:
> Does anyone know about how long a battery is good before performance
> quality begins to deteriorate? I have read in manuals where a battery
> can be charged many times... but does anyone know about how long a
> battery is good for before you should buy a replacement one? Have you
> ever owned a phone and had to buy a second battery because the first
> one would stop holding a charge or would get worn out?
>
> I own a Sanyo 4900.
>
> Thanks,
> Eric

I don't have the exact figures around me, but I seem to remember that the
average useful life of a battery is longer than the average useful life of
the phone.

I'll see if I can find something more concrete.
--
-+-
RØß
O/Siris
I work for Sprint
I *don't* speak for them

This is a most depressing question, and I wish you hadn't ask, because
it's like asking when do you start to die, and even though humans live
longer than ever, we only have so many cycles, and abuse doesn't help.

Oh, you were asking about batteries. Seems like there was a battery post
on some of these forums recently, I know after reading it, I put my
spare battery at about 40% charge (how do you tell) in the freezer, to
make it last longer--of course, the freezer is very difficult to carry
around. I did a google search and found this article on this subject--I
would liek to hear more also.

http://www.batteryuniversity.com/parttwo-34.htm



"O/Siris" <robjvargas@sprîntpcs.côm> wrote in article
<SnV5b.360773$uu5.70417@sccrnsc04>:
> Eric wrote:
> > Does anyone know about how long a battery is good before performance
> > quality begins to deteriorate? I have read in manuals where a battery
> > can be charged many times... but does anyone know about how long a
> > battery is good for before you should buy a replacement one? Have you
> > ever owned a phone and had to buy a second battery because the first
> > one would stop holding a charge or would get worn out?
> >
> > I own a Sanyo 4900.
> >
> > Thanks,
> > Eric
>
> I don't have the exact figures around me, but I seem to remember that the
> average useful life of a battery is longer than the average useful life of
> the phone.
>
> I'll see if I can find something more concrete.
> --
> -+-
> RØß
> O/Siris
> I work for Sprint
> I *don't* speak for them
>
>

[posted via phonescoop.com - free web access to the alt.cellular groups]

AS usual I forgot my point--the big thing that surprised me in the
orginal post, and this article, is that li-on's apparently don't like
deep discharge and heat---until reading that article I had been
postponing the charging till battery was showing low charge, like the
old ni-cads--apparently a big no-no with li-on.


[email protected] (Michael Sleeper) wrote in article
<[email protected]>:
> I have been in the business for about 4 years now, and I have seen
> everything from 3 months to 18 months is when I see most people
> complaining about their battery life. It just depends on their usage
> habits and how often they charge their phone.
>
> Mike S.
>
> [email protected] (Eric) wrote in article
> <[email protected]>:
> > Does anyone know about how long a battery is good before performance
> > quality begins to deteriorate? I have read in manuals where a battery
> > can be charged many times... but does anyone know about how long a
> > battery is good for before you should buy a replacement one? Have you
> > ever owned a phone and had to buy a second battery because the first one
> > would stop holding a charge or would get worn out?
> >
> > I own a Sanyo 4900.
> >
> > Thanks,
> > Eric
> >
>
> [posted via phonescoop.com - free web access to the alt.cellular groups]

[posted via phonescoop.com - free web access to the alt.cellular groups]

Sorry to keep beating this dead horse, but again it's so depressing--and
I wanted to share the depression, but I was re-redound the battery
article and it somehow seemed funny.

Article summary:
"
Avoid full discharges; recharge lithium-ion more often. Repetitive
random charge does not harm the battery. There is no memory.
· Keep the lithium-ion battery cool but do not freeze. Avoid a hot car.
For prolonged storage, keep the battery at a 40% charge level.
· If your laptop runs without a battery and fixed power is used most of
the time, remove and store the battery in a cool place.
· Avoid purchasing spare lithium-ion batteries for later use. Observe
manufacturing date. Do not buy old stock, even if sold at clearance
prices. "


So Let me get this right, don't use the battery, don't let it run down,
but don't keep it charged too much, don't get it hot, but really don't
let it get cool, and don't buy a spare in advance, because it's going to
die too. I can't recollect literary term, but all this battery stuff is
a summation of all the posts here--you know, don't buy or use a cell
phone, its going to be trouble and there is nothing you can do about it
in the end.
Remember the old George Carlin joke about the excerise/health freak who
always ate and exercised right, etc.--so there he was laying in the
hospital years later dying of nothing.





[email protected] (p lane) wrote in article
<[email protected]>:
> AS usual I forgot my point--the big thing that surprised me in the
> orginal post, and this article, is that li-on's apparently don't like
> deep discharge and heat---until reading that article I had been
> postponing the charging till battery was showing low charge, like the
> old ni-cads--apparently a big no-no with li-on.
>
>
> [email protected] (Michael Sleeper) wrote in article
> <[email protected]>:
> > I have been in the business for about 4 years now, and I have seen
> > everything from 3 months to 18 months is when I see most people
> > complaining about their battery life. It just depends on their usage
> > habits and how often they charge their phone.
> >
> > Mike S.
> >
> > [email protected] (Eric) wrote in article
> > <[email protected]>:
> > > Does anyone know about how long a battery is good before performance
> > > quality begins to deteriorate? I have read in manuals where a battery
> > > can be charged many times... but does anyone know about how long a
> > > battery is good for before you should buy a replacement one? Have you
> > > ever owned a phone and had to buy a second battery because the first one
> > > would stop holding a charge or would get worn out?
> > >
> > > I own a Sanyo 4900.
> > >
> > > Thanks,
> > > Eric
> > >
> >
> > [posted via phonescoop.com - free web access to the alt.cellular groups]
>
> [posted via phonescoop.com - free web access to the alt.cellular groups]

[posted via phonescoop.com - free web access to the alt.cellular groups]

In article <[email protected]>,
[email protected] (Michael Sleeper) wrote:

> I have been in the business for about 4 years now, and I have seen
> everything from 3 months to 18 months is when I see most people
> complaining about their battery life. It just depends on their usage
> habits and how often they charge their phone.
>
> Mike S.

What I have heard is some no-name battery chargers and car chargers get
their low price by omitting overcharge protection circuitry, and getting
overcharged can really harm a battery.

Also it depends whether you're dealing with a nickel cadmium, nickel
meth-hydride, or Lithium battery, with Lithium being the most robust.

http://www.esi-technology.com/faq.htm


Then phone design is an issue, some phones have back light on buttons in
bad positions such that a phone in a pocket or purse can quickly run its
batteries down by forcing a backlight on continuously; which would of
course shorten a batteries life in the long run.

Eric wrote:
> *Does anyone know about how long a battery is good before
> performance
> quality begins to deteriorate? I have read in manuals where a
> battery
> can be charged many times... but does anyone know about how long a
> battery is good for before you should buy a replacement one? Have
> you
> ever owned a phone and had to buy a second battery because the first
> one
> would stop holding a charge or would get worn out?
>
> I own a Sanyo 4900.
>
> Thanks,
> Eric *

Obviously it varies on the particular battery, phone, and how you use
it, but I'd say after a year you can notice a drop in the charge it
will hold. If you're not one of those people who needs the coolest
phone and gets a new one every year, I'd say at least replace the
battery every year if you notice that it's not lasting as long.

--
Posted at SprintUsers.com - Your place for everything Sprint PCS
Free wireless access @ www.SprintUsers.com/wap

If I remember correctly when LiIon batteries first came out the
estimate was between 500 and 700 charges. The new polymer batteries I
don't know, but they are smaller and lighter.


Eric wrote:

> Does anyone know about how long a battery is good before performance
> quality begins to deteriorate? I have read in manuals where a battery
> can be charged many times... but does anyone know about how long a
> battery is good for before you should buy a replacement one? Have you
> ever owned a phone and had to buy a second battery because the first one
> would stop holding a charge or would get worn out?
>
> I own a Sanyo 4900.
>
> Thanks,
> Eric
>