Flakey phone battery fix ? Anyone ?

A

Andre

Guest
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

-Andre
 
Andre......
Maybe it is time for a new cell phone.....?
You can get a new no frills phone (with a new battery) "free" if you sign up
for new service.... or for about $50 or so without new service...... about
the cost... or less... of a new battery or screwing around trying to rebuild
the old battery.
If your phone is OLD, even the new no frills phones will be a big step up.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -



"Andre" <testing_h@yahoo.com> wrote in message
news:2c2cf14c.0307180850.2da3d1b7@posting.google.com...
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

-Andre
Click to expand...
 
This is the standard example of a worn battery pack that will not
retain the charge any more.

Using an old phone battery will most likely give you the same results.
You should replace the battery pack with a new one. After about 2 to
3 years, and or about 1000 charge cycles, these batteries wear down,
and do not retain their charge. They have a limited life span. Many of
the stores that sell telephone accessories will have the proper
replacement battery pack for your phone.


Jerry Greenberg
http://www.zoom-one.com

--


testing_h@yahoo.com (Andre) wrote in message news:<2c2cf14c.0307180850.2da3d1b7@posting.google.com>...
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

-Andre
Click to expand...
 
In sci.electronics.repair Ian Stirling <root@mauve.demon.co.uk> wrote:
In sci.electronics.misc Andre <testing_h@yahoo.com> wrote:
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Get thee a hacksaw/chainsaw/axe.
I've found that a stanley knife-type blade, drawn across the seam at
right angles can be of great use.
Click to expand...
agreed. i have come to believe that there is a genuine business opportunity
here: rebuilding "custom" battery packs. my brother is shopping for a new
drill because his AEG ($$) batteries are no longer avail.

he would pay 50-100% of a new DeWalt drill/battery set for two new batteries.
has anyone come accross this type of offering on the Web? you just
hack open the spent pack, make a mold, install new batteries, ship,
control inventory of molds. build business, sell, move on. it may be
beat the average rcm endeavor for both interest and "roi". --Loren

p.s, don't wait too, long, i may convince myself to get serious about this.

(After you've satisfied yourself that it's indeed welded together, and
can't be snapped apart)

It makes a slowly deepening V shaped groove, and as you repeatedly draw
the knife over the seam, you check for any colour change (indicating
you've reached the end of the plastic) after each pass.

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

Unlikely.
One cell has almost certainly gone high resistance.


This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

--
http://inquisitor.i.am/ | mailto:inquisitor@i.am | Ian Stirling.
---------------------------+-------------------------+--------------------------
All I want is a warm bed, a kind word and unlimited power -- Ashleigh Brilliant.
Click to expand...
 
I've had good luck with those sorts of plastic assemblies by tapping them
with a hammer, or rubber mallet before attempting to open the seams...a
little judicious tapping pops the welds for a significant part of the seem
and makes it easier to get a tool in to separate the rest. I've had some
assemblies pop apart that way without any prying.

jak

"Ian Stirling" <root@mauve.demon.co.uk> wrote in message
news:bf9fm6$1jt$2$8302bc10@news.demon.co.uk...
In sci.electronics.misc Andre <testing_h@yahoo.com> wrote:
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Get thee a hacksaw/chainsaw/axe.
I've found that a stanley knife-type blade, drawn across the seam at
right angles can be of great use.
(After you've satisfied yourself that it's indeed welded together, and
can't be snapped apart)

It makes a slowly deepening V shaped groove, and as you repeatedly draw
the knife over the seam, you check for any colour change (indicating
you've reached the end of the plastic) after each pass.

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

Unlikely.
One cell has almost certainly gone high resistance.


This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

--
http://inquisitor.i.am/ | mailto:inquisitor@i.am | Ian
Stirling.
---------------------------+-------------------------+--------------------
------
All I want is a warm bed, a kind word and unlimited power -- Ashleigh
Brilliant.
Click to expand...
 
"jakdedert" <jdedert@bellsouth.net> wrote in message news:<_P5Sa.1544$g9.522@fe04.atl2.webusenet.com>...
I've had good luck with those sorts of plastic assemblies by tapping them
with a hammer, or rubber mallet before attempting to open the seams...a
little judicious tapping pops the welds for a significant part of the seem
and makes it easier to get a tool in to separate the rest. I've had some
assemblies pop apart that way without any prying.
Click to expand...
Interesting . Thanks ! :)


Will try that .

-Andre

jak

"Ian Stirling" <root@mauve.demon.co.uk> wrote in message
news:bf9fm6$1jt$2$8302bc10@news.demon.co.uk...
In sci.electronics.misc Andre <testing_h@yahoo.com> wrote:
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Get thee a hacksaw/chainsaw/axe.
I've found that a stanley knife-type blade, drawn across the seam at
right angles can be of great use.
(After you've satisfied yourself that it's indeed welded together, and
can't be snapped apart)

It makes a slowly deepening V shaped groove, and as you repeatedly draw
the knife over the seam, you check for any colour change (indicating
you've reached the end of the plastic) after each pass.

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

Unlikely.
One cell has almost certainly gone high resistance.


This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

--
http://inquisitor.i.am/ | mailto:inquisitor@i.am | Ian
Stirling.
---------------------------+-------------------------+--------------------
------
All I want is a warm bed, a kind word and unlimited power -- Ashleigh
Brilliant.
Click to expand...
 
jerryg50@hotmail.com (Jerry Greenberg) wrote in message news:<460a833b.0307181530.61840fb4@posting.google.com>...
This is the standard example of a worn battery pack that will not
retain the charge any more.

Using an old phone battery will most likely give you the same results.
You should replace the battery pack with a new one. After about 2 to
3 years, and or about 1000 charge cycles, these batteries wear down,
and do not retain their charge. They have a limited life span. Many of
the stores that sell telephone accessories will have the proper
replacement battery pack for your phone.
Click to expand...
I could rebuild it . I got the old (deader than snot) pack apart (4.8V
1000mAh) . Its fairly standard, should be feasible to rebuild it with
all the old connectors and thermal protector .

Thanks whoever suggested the "hammer" trick to pop the seams . :)
Worked well .

-Andre



Jerry Greenberg
http://www.zoom-one.com

--


testing_h@yahoo.com (Andre) wrote in message news:<2c2cf14c.0307180850.2da3d1b7@posting.google.com>...
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

-Andre
Click to expand...
 
testing_h@yahoo.com (Andre) wrote in message news:<2c2cf14c.0307190724.3f8b0874@posting.google.com>...
jerryg50@hotmail.com (Jerry Greenberg) wrote in message news:<460a833b.0307181530.61840fb4@posting.google.com>...
This is the standard example of a worn battery pack that will not
retain the charge any more.

Using an old phone battery will most likely give you the same results.
You should replace the battery pack with a new one. After about 2 to
3 years, and or about 1000 charge cycles, these batteries wear down,
and do not retain their charge. They have a limited life span. Many of
the stores that sell telephone accessories will have the proper
replacement battery pack for your phone.
Click to expand...
I found some compatible cells :) will try a rebuild .

-Andre

www.sunnythings.com for all your solar power needs

I could rebuild it . I got the old (deader than snot) pack apart (4.8V
1000mAh) . Its fairly standard, should be feasible to rebuild it with
all the old connectors and thermal protector .

Thanks whoever suggested the "hammer" trick to pop the seams . :)
Worked well .

-Andre





Jerry Greenberg
http://www.zoom-one.com

--


testing_h@yahoo.com (Andre) wrote in message news:<2c2cf14c.0307180850.2da3d1b7@posting.google.com>...
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

-Andre
Click to expand...
 
lcoe wrote:
In sci.electronics.repair Ian Stirling <root@mauve.demon.co.uk> wrote:
In sci.electronics.misc Andre <testing_h@yahoo.com> wrote:
Hi group ,

Got one of those flakey phone batteries . Works on standby and cuts
out about 5 seconds into a call , on a full charge . Phone reads
"full" on standby .

Its a NiMH Ericsson 4.8V 650mAh . If I could get into the thing I
could replace the cells, but its sealed up too well :(

Get thee a hacksaw/chainsaw/axe.
I've found that a stanley knife-type blade, drawn across the seam at
right angles can be of great use.

agreed. i have come to believe that there is a genuine business opportunity
here: rebuilding "custom" battery packs. my brother is shopping for a new
drill because his AEG ($$) batteries are no longer avail.

he would pay 50-100% of a new DeWalt drill/battery set for two new batteries.
has anyone come accross this type of offering on the Web? you just
hack open the spent pack, make a mold, install new batteries, ship,
control inventory of molds. build business, sell, move on. it may be
beat the average rcm endeavor for both interest and "roi". --Loren

p.s, don't wait too, long, i may convince myself to get serious about this.

(After you've satisfied yourself that it's indeed welded together, and
can't be snapped apart)

It makes a slowly deepening V shaped groove, and as you repeatedly draw
the knife over the seam, you check for any colour change (indicating
you've reached the end of the plastic) after each pass.

Measures 0.82 ohms pack series resistance on a 1A load .

Is this beyond repair, or do you reckon its worth building a cycler
and trying 10 or so cycles to see if it revives ?

Unlikely.
One cell has almost certainly gone high resistance.


This is an old phone. Finding a new replacement for the GA628 is
proving difficult .

--
http://inquisitor.i.am/ | mailto:inquisitor@i.am | Ian Stirling.
---------------------------+-------------------------+--------------------------
All I want is a warm bed, a kind word and unlimited power -- Ashleigh Brilliant.
Click to expand...
Do you have any idea what a mold cost? multiply that for each battery
type, and you'll find it isn't a cheap concept. On the other hand, if
you could buy the used molds when a part is discontinued, it might be
possible. I try to only buy tools that use screws to hold the battery
packs together.
--


Michael A. Terrell
Central Florida
 
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