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bin yan 11-29-2004 03:19 PM

Civic '90 battery drain quickly
 
Hi,
My '90 civic seems to drain battery quite quickly. It was out of power
this morning (after 4 days of not use). I could jump start it without
any problem. After running the car for a while, I shut off the enginee
and restarted the car, no problem. But after a couple of hours or so,
the battery seems getting quite low, to a point that it just barely
started the car after a few trials.

The battery is probably more than 5 years old (diehard). I think it is
time to replace the battery. But could it be the alternator or
something else? I am pretty novice on cars.

Any suggestions for me to test it further before taking it to a shop?

Thanks.

Tony

Caroline 11-29-2004 03:27 PM

Re: Civic '90 battery drain quickly
 
"bin yan" <binyanmail@yahoo.com> wrote
> Hi,
> My '90 civic seems to drain battery quite quickly. It was out of power
> this morning (after 4 days of not use). I could jump start it without
> any problem. After running the car for a while, I shut off the enginee
> and restarted the car, no problem. But after a couple of hours or so,
> the battery seems getting quite low, to a point that it just barely
> started the car after a few trials.
>
> The battery is probably more than 5 years old (diehard). I think it is
> time to replace the battery. But could it be the alternator or
> something else? I am pretty novice on cars.


Some ideas:

Could be but you're about due for a new battery anyway. On my 91 Civic, the
average lifetime of any battery (including one Diehard) in it has been 4.5
years.

Old batteries do tend to wear down alternators. It's prudent to replace them
before they die completely.

I suggest replacing the battery and then getting back to the group. Interstate
is a very popular battery name around these parts. For the first time ever, I
broke away from Sears Diehards and bought an Interstate a few months ago. Costs
about $20 more, but I think it's got a 7-year warranty.

> Any suggestions for me to test it further before taking it to a shop?


Autozone will do a free test of the battery but I personally haven't had the
best experience with them in this particular matter.

You could go buy a voltmeter from Radio Shack or similar, check the battery
voltage with the engine not running, then with it running and the headlights on,
and get back to the group. You should have at least 12 volts with the car not
running. It should go over 14 volts with it running and headlights on.

Do check that, say, the overhead interior car light switch isn't stuck in the
"on all the time" position.



Caroline 11-29-2004 03:27 PM

Re: Civic '90 battery drain quickly
 
"bin yan" <binyanmail@yahoo.com> wrote
> Hi,
> My '90 civic seems to drain battery quite quickly. It was out of power
> this morning (after 4 days of not use). I could jump start it without
> any problem. After running the car for a while, I shut off the enginee
> and restarted the car, no problem. But after a couple of hours or so,
> the battery seems getting quite low, to a point that it just barely
> started the car after a few trials.
>
> The battery is probably more than 5 years old (diehard). I think it is
> time to replace the battery. But could it be the alternator or
> something else? I am pretty novice on cars.


Some ideas:

Could be but you're about due for a new battery anyway. On my 91 Civic, the
average lifetime of any battery (including one Diehard) in it has been 4.5
years.

Old batteries do tend to wear down alternators. It's prudent to replace them
before they die completely.

I suggest replacing the battery and then getting back to the group. Interstate
is a very popular battery name around these parts. For the first time ever, I
broke away from Sears Diehards and bought an Interstate a few months ago. Costs
about $20 more, but I think it's got a 7-year warranty.

> Any suggestions for me to test it further before taking it to a shop?


Autozone will do a free test of the battery but I personally haven't had the
best experience with them in this particular matter.

You could go buy a voltmeter from Radio Shack or similar, check the battery
voltage with the engine not running, then with it running and the headlights on,
and get back to the group. You should have at least 12 volts with the car not
running. It should go over 14 volts with it running and headlights on.

Do check that, say, the overhead interior car light switch isn't stuck in the
"on all the time" position.



Michael Pardee 11-29-2004 06:03 PM

Re: Civic '90 battery drain quickly
 
"Caroline" <caroline10027remove@earthlink.net> wrote in message
news:bDLqd.3823$6K5.2845@newsread2.news.atl.earthl ink.net...
> "bin yan" <binyanmail@yahoo.com> wrote
>> Hi,
>> My '90 civic seems to drain battery quite quickly. It was out of power
>> this morning (after 4 days of not use). I could jump start it without
>> any problem. After running the car for a while, I shut off the enginee
>> and restarted the car, no problem. But after a couple of hours or so,
>> the battery seems getting quite low, to a point that it just barely
>> started the car after a few trials.
>>
>> The battery is probably more than 5 years old (diehard). I think it is
>> time to replace the battery. But could it be the alternator or
>> something else? I am pretty novice on cars.

>
> Some ideas:
>
> Could be but you're about due for a new battery anyway. On my 91 Civic,
> the
> average lifetime of any battery (including one Diehard) in it has been 4.5
> years.
>
> Old batteries do tend to wear down alternators. It's prudent to replace
> them
> before they die completely.
>
> I suggest replacing the battery and then getting back to the group.
> Interstate
> is a very popular battery name around these parts. For the first time
> ever, I
> broke away from Sears Diehards and bought an Interstate a few months ago.
> Costs
> about $20 more, but I think it's got a 7-year warranty.
>
>> Any suggestions for me to test it further before taking it to a shop?

>
> Autozone will do a free test of the battery but I personally haven't had
> the
> best experience with them in this particular matter.
>
> You could go buy a voltmeter from Radio Shack or similar, check the
> battery
> voltage with the engine not running, then with it running and the
> headlights on,
> and get back to the group. You should have at least 12 volts with the car
> not
> running. It should go over 14 volts with it running and headlights on.
>
> Do check that, say, the overhead interior car light switch isn't stuck in
> the
> "on all the time" position.
>
>

And it is prudent to check the charging voltage after putting the battery
in. It should be between 13 and 15 volts (low when the weather is warmer,
high when the weather is colder). I replaced a friend's alternator (the
diodes were almost completely toast) and checked the charge voltage. 17
volts! Replaced the regulator (separate device in his Ford), and he wanted
to give the battery a chance to prove itself. Once he replaced the battery,
the system worked like a champ.

I was looking for possible low voltage, but I'm glad I checked. A battery
will put up with that for a couple of minutes, but no longer.

Mike



Michael Pardee 11-29-2004 06:03 PM

Re: Civic '90 battery drain quickly
 
"Caroline" <caroline10027remove@earthlink.net> wrote in message
news:bDLqd.3823$6K5.2845@newsread2.news.atl.earthl ink.net...
> "bin yan" <binyanmail@yahoo.com> wrote
>> Hi,
>> My '90 civic seems to drain battery quite quickly. It was out of power
>> this morning (after 4 days of not use). I could jump start it without
>> any problem. After running the car for a while, I shut off the enginee
>> and restarted the car, no problem. But after a couple of hours or so,
>> the battery seems getting quite low, to a point that it just barely
>> started the car after a few trials.
>>
>> The battery is probably more than 5 years old (diehard). I think it is
>> time to replace the battery. But could it be the alternator or
>> something else? I am pretty novice on cars.

>
> Some ideas:
>
> Could be but you're about due for a new battery anyway. On my 91 Civic,
> the
> average lifetime of any battery (including one Diehard) in it has been 4.5
> years.
>
> Old batteries do tend to wear down alternators. It's prudent to replace
> them
> before they die completely.
>
> I suggest replacing the battery and then getting back to the group.
> Interstate
> is a very popular battery name around these parts. For the first time
> ever, I
> broke away from Sears Diehards and bought an Interstate a few months ago.
> Costs
> about $20 more, but I think it's got a 7-year warranty.
>
>> Any suggestions for me to test it further before taking it to a shop?

>
> Autozone will do a free test of the battery but I personally haven't had
> the
> best experience with them in this particular matter.
>
> You could go buy a voltmeter from Radio Shack or similar, check the
> battery
> voltage with the engine not running, then with it running and the
> headlights on,
> and get back to the group. You should have at least 12 volts with the car
> not
> running. It should go over 14 volts with it running and headlights on.
>
> Do check that, say, the overhead interior car light switch isn't stuck in
> the
> "on all the time" position.
>
>

And it is prudent to check the charging voltage after putting the battery
in. It should be between 13 and 15 volts (low when the weather is warmer,
high when the weather is colder). I replaced a friend's alternator (the
diodes were almost completely toast) and checked the charge voltage. 17
volts! Replaced the regulator (separate device in his Ford), and he wanted
to give the battery a chance to prove itself. Once he replaced the battery,
the system worked like a champ.

I was looking for possible low voltage, but I'm glad I checked. A battery
will put up with that for a couple of minutes, but no longer.

Mike



Howard 11-29-2004 08:47 PM

Re: Civic '90 battery drain quickly
 
The life of a battery can differ significantly depending on where you live.
Here in this part of the country (South) most car batteries won't make 4
years. Heat shortens their life measurably.
If you haven't heard, Honda has changed their battery warranty to 100 months
with free replacement up to 3 years if defective or fails. And their price
is very competitive right now. Make your decision soon if you do get a Honda
battery because the price is going up a little on December 1. Up until then
the price for the 100 month battery is the same as the previous 60 month
battery. The Honda batteries are currently manufactured and distributed (at
least here in the south) by Interstate. They make very good quality
batteries.
Howard
"bin yan" <binyanmail@yahoo.com> wrote in message
news:f9f3e149.0411291219.2fbaabf5@posting.google.c om...
> Hi,
> My '90 civic seems to drain battery quite quickly. It was out of power
> this morning (after 4 days of not use). I could jump start it without
> any problem. After running the car for a while, I shut off the enginee
> and restarted the car, no problem. But after a couple of hours or so,
> the battery seems getting quite low, to a point that it just barely
> started the car after a few trials.
>
> The battery is probably more than 5 years old (diehard). I think it is
> time to replace the battery. But could it be the alternator or
> something else? I am pretty novice on cars.
>
> Any suggestions for me to test it further before taking it to a shop?
>
> Thanks.
>
> Tony




Howard 11-29-2004 08:47 PM

Re: Civic '90 battery drain quickly
 
The life of a battery can differ significantly depending on where you live.
Here in this part of the country (South) most car batteries won't make 4
years. Heat shortens their life measurably.
If you haven't heard, Honda has changed their battery warranty to 100 months
with free replacement up to 3 years if defective or fails. And their price
is very competitive right now. Make your decision soon if you do get a Honda
battery because the price is going up a little on December 1. Up until then
the price for the 100 month battery is the same as the previous 60 month
battery. The Honda batteries are currently manufactured and distributed (at
least here in the south) by Interstate. They make very good quality
batteries.
Howard
"bin yan" <binyanmail@yahoo.com> wrote in message
news:f9f3e149.0411291219.2fbaabf5@posting.google.c om...
> Hi,
> My '90 civic seems to drain battery quite quickly. It was out of power
> this morning (after 4 days of not use). I could jump start it without
> any problem. After running the car for a while, I shut off the enginee
> and restarted the car, no problem. But after a couple of hours or so,
> the battery seems getting quite low, to a point that it just barely
> started the car after a few trials.
>
> The battery is probably more than 5 years old (diehard). I think it is
> time to replace the battery. But could it be the alternator or
> something else? I am pretty novice on cars.
>
> Any suggestions for me to test it further before taking it to a shop?
>
> Thanks.
>
> Tony




fish 11-30-2004 04:54 AM

Re: Civic '90 battery drain quickly
 
On Mon, 29 Nov 2004 20:47:30 -0500, "Howard" <Howardh@hotmail.com>
wrote:

>The life of a battery can differ significantly depending on where you live.
>Here in this part of the country (South) most car batteries won't make 4
>years. Heat shortens their life measurably.
>If you haven't heard, Honda has changed their battery warranty to 100 months
>with free replacement up to 3 years if defective or fails. And their price
>is very competitive right now. Make your decision soon if you do get a Honda
>battery because the price is going up a little on December 1. Up until then
>the price for the 100 month battery is the same as the previous 60 month
>battery. The Honda batteries are currently manufactured and distributed (at
>least here in the south) by Interstate. They make very good quality
>batteries.
>Howard



Howard,

while we are on the topic, maybe you, or anyone really I dont mind,
could answer a question i have. My car is a 2001 honda civic with
about 50,000 miles, so i am about due for a new battery. I have a low
voltage charger that i use on my lawnmower battery (12 volts), so my
question is, can i squeeze some extra life from my car battery if i
give it a good charging every month, or every weekend from now until
it dies? I dont seem to have any starting problems at all right now.

Thanks,
Fish.

fish 11-30-2004 04:54 AM

Re: Civic '90 battery drain quickly
 
On Mon, 29 Nov 2004 20:47:30 -0500, "Howard" <Howardh@hotmail.com>
wrote:

>The life of a battery can differ significantly depending on where you live.
>Here in this part of the country (South) most car batteries won't make 4
>years. Heat shortens their life measurably.
>If you haven't heard, Honda has changed their battery warranty to 100 months
>with free replacement up to 3 years if defective or fails. And their price
>is very competitive right now. Make your decision soon if you do get a Honda
>battery because the price is going up a little on December 1. Up until then
>the price for the 100 month battery is the same as the previous 60 month
>battery. The Honda batteries are currently manufactured and distributed (at
>least here in the south) by Interstate. They make very good quality
>batteries.
>Howard



Howard,

while we are on the topic, maybe you, or anyone really I dont mind,
could answer a question i have. My car is a 2001 honda civic with
about 50,000 miles, so i am about due for a new battery. I have a low
voltage charger that i use on my lawnmower battery (12 volts), so my
question is, can i squeeze some extra life from my car battery if i
give it a good charging every month, or every weekend from now until
it dies? I dont seem to have any starting problems at all right now.

Thanks,
Fish.

Howard 11-30-2004 07:34 AM

Re: Civic '90 battery drain quickly
 
That would not assist you unless you leave the car unused for a week or more
at a time. Your car has an alternator and a very sophisticated computer
that monitors and keeps your battery at peak efficiency. The only thing that
hurts the state of charge is abuse by forgetful owners who repetitively
leave lights or other power draining systems on, an electrical problem on
your vehicle or the age of your battery
Howard.
"fish" <fishingrod45@hotmail.com> wrote in message
news:a4hoq0p9c387t4idi7hkp9i1pukph9kfc2@4ax.com...
> On Mon, 29 Nov 2004 20:47:30 -0500, "Howard" <Howardh@hotmail.com>
> wrote:
>
> >The life of a battery can differ significantly depending on where you

live.
> >Here in this part of the country (South) most car batteries won't make 4
> >years. Heat shortens their life measurably.
> >If you haven't heard, Honda has changed their battery warranty to 100

months
> >with free replacement up to 3 years if defective or fails. And their

price
> >is very competitive right now. Make your decision soon if you do get a

Honda
> >battery because the price is going up a little on December 1. Up until

then
> >the price for the 100 month battery is the same as the previous 60 month
> >battery. The Honda batteries are currently manufactured and distributed

(at
> >least here in the south) by Interstate. They make very good quality
> >batteries.
> >Howard

>
>
> Howard,
>
> while we are on the topic, maybe you, or anyone really I dont mind,
> could answer a question i have. My car is a 2001 honda civic with
> about 50,000 miles, so i am about due for a new battery. I have a low
> voltage charger that i use on my lawnmower battery (12 volts), so my
> question is, can i squeeze some extra life from my car battery if i
> give it a good charging every month, or every weekend from now until
> it dies? I dont seem to have any starting problems at all right now.
>
> Thanks,
> Fish.




Howard 11-30-2004 07:34 AM

Re: Civic '90 battery drain quickly
 
That would not assist you unless you leave the car unused for a week or more
at a time. Your car has an alternator and a very sophisticated computer
that monitors and keeps your battery at peak efficiency. The only thing that
hurts the state of charge is abuse by forgetful owners who repetitively
leave lights or other power draining systems on, an electrical problem on
your vehicle or the age of your battery
Howard.
"fish" <fishingrod45@hotmail.com> wrote in message
news:a4hoq0p9c387t4idi7hkp9i1pukph9kfc2@4ax.com...
> On Mon, 29 Nov 2004 20:47:30 -0500, "Howard" <Howardh@hotmail.com>
> wrote:
>
> >The life of a battery can differ significantly depending on where you

live.
> >Here in this part of the country (South) most car batteries won't make 4
> >years. Heat shortens their life measurably.
> >If you haven't heard, Honda has changed their battery warranty to 100

months
> >with free replacement up to 3 years if defective or fails. And their

price
> >is very competitive right now. Make your decision soon if you do get a

Honda
> >battery because the price is going up a little on December 1. Up until

then
> >the price for the 100 month battery is the same as the previous 60 month
> >battery. The Honda batteries are currently manufactured and distributed

(at
> >least here in the south) by Interstate. They make very good quality
> >batteries.
> >Howard

>
>
> Howard,
>
> while we are on the topic, maybe you, or anyone really I dont mind,
> could answer a question i have. My car is a 2001 honda civic with
> about 50,000 miles, so i am about due for a new battery. I have a low
> voltage charger that i use on my lawnmower battery (12 volts), so my
> question is, can i squeeze some extra life from my car battery if i
> give it a good charging every month, or every weekend from now until
> it dies? I dont seem to have any starting problems at all right now.
>
> Thanks,
> Fish.




WaterWatcher 12-02-2004 11:14 PM

Re: Civic '90 battery drain quickly
 

"fish" <fishingrod45@hotmail.com> wrote in message
news:a4hoq0p9c387t4idi7hkp9i1pukph9kfc2@4ax.com...
> On Mon, 29 Nov 2004 20:47:30 -0500, "Howard" <Howardh@hotmail.com>
> wrote:
>
>>The life of a battery can differ significantly depending on where you
>>live.
>>Here in this part of the country (South) most car batteries won't make 4
>>years. Heat shortens their life measurably.
>>If you haven't heard, Honda has changed their battery warranty to 100
>>months
>>with free replacement up to 3 years if defective or fails. And their price
>>is very competitive right now. Make your decision soon if you do get a
>>Honda
>>battery because the price is going up a little on December 1. Up until
>>then
>>the price for the 100 month battery is the same as the previous 60 month
>>battery. The Honda batteries are currently manufactured and distributed
>>(at
>>least here in the south) by Interstate. They make very good quality
>>batteries.
>>Howard

>
>
> Howard,
>
> while we are on the topic, maybe you, or anyone really I dont mind,
> could answer a question i have. My car is a 2001 honda civic with
> about 50,000 miles, so i am about due for a new battery. I have a low
> voltage charger that i use on my lawnmower battery (12 volts), so my
> question is, can i squeeze some extra life from my car battery if i
> give it a good charging every month, or every weekend from now until
> it dies? I dont seem to have any starting problems at all right now.
>

One thing you can do for an old battery is use a charger that has a
"rejuvenate" setting. I have a Vector charger (available at Wal Mart) that
has such a setting. The theory is that when rejuvenating the charger uses
high frequency charging to vibrate the sulfates off of the plates, therby
adding time to the battery's life. YMMV.

WW



WaterWatcher 12-02-2004 11:14 PM

Re: Civic '90 battery drain quickly
 

"fish" <fishingrod45@hotmail.com> wrote in message
news:a4hoq0p9c387t4idi7hkp9i1pukph9kfc2@4ax.com...
> On Mon, 29 Nov 2004 20:47:30 -0500, "Howard" <Howardh@hotmail.com>
> wrote:
>
>>The life of a battery can differ significantly depending on where you
>>live.
>>Here in this part of the country (South) most car batteries won't make 4
>>years. Heat shortens their life measurably.
>>If you haven't heard, Honda has changed their battery warranty to 100
>>months
>>with free replacement up to 3 years if defective or fails. And their price
>>is very competitive right now. Make your decision soon if you do get a
>>Honda
>>battery because the price is going up a little on December 1. Up until
>>then
>>the price for the 100 month battery is the same as the previous 60 month
>>battery. The Honda batteries are currently manufactured and distributed
>>(at
>>least here in the south) by Interstate. They make very good quality
>>batteries.
>>Howard

>
>
> Howard,
>
> while we are on the topic, maybe you, or anyone really I dont mind,
> could answer a question i have. My car is a 2001 honda civic with
> about 50,000 miles, so i am about due for a new battery. I have a low
> voltage charger that i use on my lawnmower battery (12 volts), so my
> question is, can i squeeze some extra life from my car battery if i
> give it a good charging every month, or every weekend from now until
> it dies? I dont seem to have any starting problems at all right now.
>

One thing you can do for an old battery is use a charger that has a
"rejuvenate" setting. I have a Vector charger (available at Wal Mart) that
has such a setting. The theory is that when rejuvenating the charger uses
high frequency charging to vibrate the sulfates off of the plates, therby
adding time to the battery's life. YMMV.

WW



bin yan 12-03-2004 01:49 PM

Re: Civic '90 battery drain quickly
 
Thanks all for your inputs. My civic actually works fine now. I
cleaned up the battery a little. And no problem whatsoever for 4 days
already. Of course, I never tried leaving it for more than overnight.
But I will stay put till problem comes back up.

I didn't think I left anything on last time if failed.

Tony

"WaterWatcher" <replytogroup@donotmail.com> wrote in message news:<ZKRrd.134204$5K2.60294@attbi_s03>...
> "fish" <fishingrod45@hotmail.com> wrote in message
> news:a4hoq0p9c387t4idi7hkp9i1pukph9kfc2@4ax.com...
> > On Mon, 29 Nov 2004 20:47:30 -0500, "Howard" <Howardh@hotmail.com>
> > wrote:
> >
> >>The life of a battery can differ significantly depending on where you
> >>live.
> >>Here in this part of the country (South) most car batteries won't make 4
> >>years. Heat shortens their life measurably.
> >>If you haven't heard, Honda has changed their battery warranty to 100
> >>months
> >>with free replacement up to 3 years if defective or fails. And their price
> >>is very competitive right now. Make your decision soon if you do get a
> >>Honda
> >>battery because the price is going up a little on December 1. Up until
> >>then
> >>the price for the 100 month battery is the same as the previous 60 month
> >>battery. The Honda batteries are currently manufactured and distributed
> >>(at
> >>least here in the south) by Interstate. They make very good quality
> >>batteries.
> >>Howard

> >
> >
> > Howard,
> >
> > while we are on the topic, maybe you, or anyone really I dont mind,
> > could answer a question i have. My car is a 2001 honda civic with
> > about 50,000 miles, so i am about due for a new battery. I have a low
> > voltage charger that i use on my lawnmower battery (12 volts), so my
> > question is, can i squeeze some extra life from my car battery if i
> > give it a good charging every month, or every weekend from now until
> > it dies? I dont seem to have any starting problems at all right now.
> >

> One thing you can do for an old battery is use a charger that has a
> "rejuvenate" setting. I have a Vector charger (available at Wal Mart) that
> has such a setting. The theory is that when rejuvenating the charger uses
> high frequency charging to vibrate the sulfates off of the plates, therby
> adding time to the battery's life. YMMV.
>
> WW


bin yan 12-03-2004 01:49 PM

Re: Civic '90 battery drain quickly
 
Thanks all for your inputs. My civic actually works fine now. I
cleaned up the battery a little. And no problem whatsoever for 4 days
already. Of course, I never tried leaving it for more than overnight.
But I will stay put till problem comes back up.

I didn't think I left anything on last time if failed.

Tony

"WaterWatcher" <replytogroup@donotmail.com> wrote in message news:<ZKRrd.134204$5K2.60294@attbi_s03>...
> "fish" <fishingrod45@hotmail.com> wrote in message
> news:a4hoq0p9c387t4idi7hkp9i1pukph9kfc2@4ax.com...
> > On Mon, 29 Nov 2004 20:47:30 -0500, "Howard" <Howardh@hotmail.com>
> > wrote:
> >
> >>The life of a battery can differ significantly depending on where you
> >>live.
> >>Here in this part of the country (South) most car batteries won't make 4
> >>years. Heat shortens their life measurably.
> >>If you haven't heard, Honda has changed their battery warranty to 100
> >>months
> >>with free replacement up to 3 years if defective or fails. And their price
> >>is very competitive right now. Make your decision soon if you do get a
> >>Honda
> >>battery because the price is going up a little on December 1. Up until
> >>then
> >>the price for the 100 month battery is the same as the previous 60 month
> >>battery. The Honda batteries are currently manufactured and distributed
> >>(at
> >>least here in the south) by Interstate. They make very good quality
> >>batteries.
> >>Howard

> >
> >
> > Howard,
> >
> > while we are on the topic, maybe you, or anyone really I dont mind,
> > could answer a question i have. My car is a 2001 honda civic with
> > about 50,000 miles, so i am about due for a new battery. I have a low
> > voltage charger that i use on my lawnmower battery (12 volts), so my
> > question is, can i squeeze some extra life from my car battery if i
> > give it a good charging every month, or every weekend from now until
> > it dies? I dont seem to have any starting problems at all right now.
> >

> One thing you can do for an old battery is use a charger that has a
> "rejuvenate" setting. I have a Vector charger (available at Wal Mart) that
> has such a setting. The theory is that when rejuvenating the charger uses
> high frequency charging to vibrate the sulfates off of the plates, therby
> adding time to the battery's life. YMMV.
>
> WW



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