Li ion battery quirks

[Glenn Pure]

A few Qs....

1. Do Li ion batteries suffer from memory effect?

2. Is it best to fully cycle these batteries or keep topping them up
with charge?

I have a new toy (camera) with a Li ion battery and want to get
maximum life out of it as the replacements are expensive.

Cheers
Glenn
Glenn Pure
Canberra, Australia
Web page: http://www.evans-pure.net

 

[Phil Allison]

"Glenn Pure" <glenn*delete_this_for_reply*@evans-pure.net>

A few Qs....

1. Do Li ion batteries suffer from memory effect?

** If they do they would be the **only** cells that exhibit the mysterious
effect

2. Is it best to fully cycle these batteries or keep topping them up
with charge?

** That is Q1 over again - isn't it ?

I have a new toy (camera) with a Li ion battery and want to get
maximum life out of it as the replacements are expensive.

** Failure and self destruct mechanisms are inherent in all rechargeable
cells and batteries ( there is a distinction - some mechanisms do not exist
for one cell applications ) - the details are not fully published by cell
makers and vary widely from brand to brand and even batch to batch.





............... Phil

 

[Phil Allison]

"Glenn Pure" <

A few Qs....

1. Do Li ion batteries suffer from memory effect?

2. Is it best to fully cycle these batteries or keep topping them up
with charge?

** BTW Why the heck does everyone think that batteries are part of
electronics ??????

They were around long before electronics was ever though of or the term was
even coined.

They are designed and manufactured by the chemical industry - same a dyes,
paints and explosives.

The finer details of their design like any inherent problems is kept a
commercial secret known only to a few chemical engineers who are telling
no-one.





........... Phil

 

[Phil Allison]

"Glenn Pure" <glenn*delete_this_for_reply*@evans-pure.net>

1. Do Li ion batteries suffer from memory effect?

** Try a Google Groups search ( Advanced Search ) on
"sci.chem.electrochem" or " sci.chem.electrochem.battery " for lots of
erudite stuff on the topic.





........... Phil

 

[Rod Speed]

Phil Allison <philallison@optusnet.com.au> wrote in message
news:40944d09$0$4543$afc38c87@news.optusnet.com.au...

Glenn Pure wrote

A few Qs....

1. Do Li ion batteries suffer from memory effect?

2. Is it best to fully cycle these batteries
or keep topping them up with charge?

BTW Why the heck does everyone think that batteries are part of electronics ??????

Or it is as close to the most appropriate aus.* group he could find.

They were around long before electronics was
ever though of or the term was even coined.

Duh.

They are designed and manufactured by the chemical
industry - same a dyes, paints and explosives.

Even you must have noticed that plenty of electronic devices use them.

The finer details of their design like any inherent
problems is kept a commercial secret known only
to a few chemical engineers who are telling no-one.

And there are general questions like the one he asked
that are specific to the particular battery technology.

 

[Phil Allison]

"Rod Speed" <rod_speed@yahoo.com>

Phil Allison <philallison@optusnet.com.au

BTW Why the heck does everyone think that batteries are part of
electronics ??????

Or it is as close to the most appropriate aus.* group he could find.

** It is a nice sunny day in Sydney, the air is very dry though.

They were around long before electronics was
ever though of or the term was even coined.

Duh.

** Add a few more and you can sing it.

They are designed and manufactured by the chemical
industry - same a dyes, paints and explosives.

Even you must have noticed that plenty of electronic devices use them.

** Duh ..duh. ..duh ...duh ...duh....

The finer details of their design like any inherent
problems is kept a commercial secret known only
to a few chemical engineers who are telling no-one.

And there are general questions like the one he asked
that are specific to the particular battery technology.

** The subject is called "electrochemistry" - see the NGs I
suggested.





........... Phil













>

 

[TonyP]

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:409448b8$0$441$afc38c87@news.optusnet.com.au...

2. Is it best to fully cycle these batteries or keep topping them up
with charge?

** That is Q1 over again - isn't it ?

No, according to available data I have seen, life expectancy is increased if
they are kept around half chage. Nothing to do with "memory effect"

TonyP.

 

[Dafydd]

Phil why did they let you out, you are far from cured.

--



"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:40946265$0$12481$afc38c87@news.optusnet.com.au...

"Glenn Pure" <glenn*delete_this_for_reply*@evans-pure.net


1. Do Li ion batteries suffer from memory effect?


** Try a Google Groups search ( Advanced Search ) on
"sci.chem.electrochem" or " sci.chem.electrochem.battery " for lots
of
erudite stuff on the topic.





.......... Phil

 

[Rod Speed]

Some completely unemployable fuckwit claiming to be
Phil Allison <philallison@optusnet.com.au> desperately
attempted to bullshit its way out of its predicament in message
news:40947f53$0$1990$afc38c87@news.optusnet.com.au...
and fooled absolutely no one at all. As always.

 

[Patrick Dunford]

Glenn Pure

A few Qs....

1. Do Li ion batteries suffer from memory effect?

2. Is it best to fully cycle these batteries or keep topping them up
with charge?

I have a new toy (camera) with a Li ion battery and want to get
maximum life out of it as the replacements are expensive.

Lithium ion batteries have a relatively short life, hope you are going to
be using that camera a lot or else you are wasting money.

They do not self discharge to the same extent as other battery types,
this is good as you can leave it sitting for a while

 

[Phil Allison]

"Glenn Pure" <glenn*delete_this_for_reply*@evans-pure.net>

A few Qs....

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


** Has a certain ring of truth about it.




........... Phil

 

[budgie]

On Sun, 2 May 2004 23:25:31 +1200, Patrick Dunford <patrickdunford@nz.invalid>
wrote:

Glenn Pure
A few Qs....

1. Do Li ion batteries suffer from memory effect?

2. Is it best to fully cycle these batteries or keep topping them up
with charge?

I have a new toy (camera) with a Li ion battery and want to get
maximum life out of it as the replacements are expensive.

Lithium ion batteries have a relatively short life,

Your experience (or reference sources) must be totally different from mine.

Typically three years and 500-1000 full cyles is my experience. And I have a
Li-Ion pack in an Acer Travelmate 370 dating from (pulls lappie out) "9637" so
that's coming up to EIGHT years, and it still dleivers over 2/3rds of its
original endurance.

So it depends on what you define as relatively short.

 

[Patrick Dunford]

budgie

On Sun, 2 May 2004 23:25:31 +1200, Patrick Dunford <patrickdunford@nz.invalid
wrote:

Glenn Pure
A few Qs....

1. Do Li ion batteries suffer from memory effect?

2. Is it best to fully cycle these batteries or keep topping them up
with charge?

I have a new toy (camera) with a Li ion battery and want to get
maximum life out of it as the replacements are expensive.

Lithium ion batteries have a relatively short life,

Your experience (or reference sources) must be totally different from mine.

Typically three years and 500-1000 full cyles is my experience. And I have a
Li-Ion pack in an Acer Travelmate 370 dating from (pulls lappie out) "9637" so
that's coming up to EIGHT years, and it still dleivers over 2/3rds of its
original endurance.

So it depends on what you define as relatively short.

As it said in the referenced article, 2-3 years is a typical life.

 

[budgie]

On Mon, 3 May 2004 22:55:01 +1200, Patrick Dunford <patrickdunford@nz.invalid>
wrote:

budgie
On Sun, 2 May 2004 23:25:31 +1200, Patrick Dunford <patrickdunford@nz.invalid
wrote:

Glenn Pure
A few Qs....

1. Do Li ion batteries suffer from memory effect?

2. Is it best to fully cycle these batteries or keep topping them up
with charge?

I have a new toy (camera) with a Li ion battery and want to get
maximum life out of it as the replacements are expensive.

Lithium ion batteries have a relatively short life,

Your experience (or reference sources) must be totally different from mine.

Typically three years and 500-1000 full cyles is my experience. And I have a
Li-Ion pack in an Acer Travelmate 370 dating from (pulls lappie out) "9637" so
that's coming up to EIGHT years, and it still dleivers over 2/3rds of its
original endurance.

So it depends on what you define as relatively short.

As it said in the referenced article, 2-3 years is a typical life.

So it depends on what you define as relatively short.

 

[TonyP]

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:409448b8$0$441$afc38c87@news.optusnet.com.au...
2. Is it best to fully cycle these batteries or keep topping them up
with charge?

** That is Q1 over again - isn't it ?

No, according to available data I have seen, life expectancy is increased
if
they are kept around half chage. Nothing to do with "memory effect"

see: http://www.batteryuniversity.com/parttwo-34.htm
** Has a certain ring of truth about it.
.......... Phil

Yep, they think 40% is a good figure, pretty close to the "around half" that
I stated.

TonyP.

 

[Phil Allison]

"TonyP" <TonyP@optus.net.com.au

"Phil Allison" <philallison@optusnet.com.au> wrote in message

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

** Has a certain ring of truth about it.


Yep, they think 40% is a good figure,

** For long term storage purposes only - ie no bloody use to the OP.

He wants to USE his digital camera regularly !!

pretty close to the "around half" that I stated.

** Hey, if you don't use them at all and keep them in the fridge they will
last for yonks !!

Even non-rechargeable last years and years that way too.

TonyP ( aka Trevor the pedantic idiot ) is really onto something
here - folks.





............. Phil

 

[Glenn Pure]

"Phil Allison" <philallison@optusnet.com.au> wrote:

"Glenn Pure" <glenn*delete_this_for_reply*@evans-pure.net

A few Qs....


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


** Has a certain ring of truth about it.



Thanks all. Above link was useful, and is hopefully authoritative.

G

Glenn Pure
Canberra, Australia
Web page: http://www.evans-pure.net

 

[TonyP]

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:409759e6$0$439$afc38c87@news.optusnet.com.au...

** For long term storage purposes only - ie no bloody use to the OP.
He wants to USE his digital camera regularly !!

So do I, and DON'T recharge after every use.
If he just wants to keep them fully charged, he wouldn't have asked the
question in the first place!

** Hey, if you don't use them at all and keep them in the fridge they
will
last for yonks !!
Even non-rechargeable last years and years that way too.

Some even more so than LiOn too.

TonyP.

 

[Phil Allison]

"TonyP" <TonyP@optus.net.com.au> u...

"Phil Allison" <philallison@optusnet.com.au


** For long term storage purposes only - ie no bloody use to the OP.
He wants to USE his digital camera regularly !!

So do I, and DON'T recharge after every use.
If he just wants to keep them fully charged, he wouldn't have asked the
question in the first place!

** Typical, autistic, senseless, snipped to hell post from Trevor ( aka
roverT )

** Hey, if you don't use them at all and keep them in the fridge they
will last for yonks !!
Even non-rechargeables last years and years that way too.

Some even more so than LiOn too.

** What a ridiculous snipping moron.




............ Phil

 

[TonyP]

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:409b37a6$0$28242$afc38c87@news.optusnet.com.au...

<Snip all of Phil's non relevant material.>

Yes we know you don't like to be proven wrong Phil.

TonyP.