On 5/10/2013 8:26 AM, Tom wrote:
Hi again

Sorry, I know I asked this question a couple years ago or a similiar one.

I am stumbled again and I don't want to ruin my batteries so I thought I
would ask the pros again.

I have two Marine deep cycle 750 A Nautaulis Canadian Tire Batteries.
225min/115 ah model number is 10-3199-0. These are the bit bigger
batteries about 40 lbs.

I also have the 10am/2am Automatic Canadian Tire 11-1567-0 battery charger.

I have had these batteries in my garage all winter and about once every
month or 50 days I would bring them up to full charge. Takes about 25 or
30 hours at 10 amp charging until that GREEN light comes on and
automatically shutting off.

My problem is now that the green light isn't coming on. They are just
sitting there bubbling away, I actually had to put about a litre or two
into each of Reverse Osmosis water in to them because I could see they
were low. But the green light will not come on and they keep charging.
About 3 days now.

I took both batteries down to Canadian Tire and the chap used a little
hand tool electronic device that pumped me out a receipt thing (EXP800)
and this battery test told me that the batteries are GOOD. Voltage is
12.63 for one and the other was 12.68 for the other. They measured 922
CCA and 684 CCA (both rated for 750A) so he said they are good. Temp was
19C


I asked him why the green light doesn't come on and the charging stop
but he said because the batteries are fully charged and good that the
charger must be good. And it is good because I used it on another deep
cycle battery I have and the green light came on and it stopped when
fullly charged.

I see the needle is close to the green on the meter but just not moving
over and continues charging at 10 amps with the bigger batteries in
question.

Batteries are almost 4 years old.

Any ideas or comments? Should I stop the charging? or continue until
that green light comes on like it used to? I would like to get a few
more years from these batteries . All coments are appreciated, cheap or
otherwise, I appreciate your expertise very much. Sorry the question is
OFF Topic, but I know you folks have the answer better than the boating
groups. thnx

Best regards and thanks

73s



I can't really tell if your batteries are any good. His tester may not
be that good. I do know how to keep batteries alive for years in my
home. I have an elaborate security system run from a bank of 12 volt
batteries. These batteries each has their own automatic charter.
Automatic means that when the batteries reach full charge the charger
shuts off until the battery needs to be charged again.

Most of the newer style digital looking chargers simply don't work. The
older style that make a clunk sound when they start charging are the
good ones. They shut completely off to prevent over charging and let the
battery run down until it needs charging again. This has worked for me
for many years.

Michael

Yes, sounds like you have your system figured out and it works. On the exact
same receipt paper thing that the Canadian Tire guy's machine tested had the
comment on each test result paper " Avg life in area : 46 MO. So that
isn't very long and my last batteries (same style) lasted 8 years. After
asking the group this question years ago I have put my batteries on a better
program and care for them better.

My charger makes that "chunk" noise you mentioned when I plug it in.

The Chap at Canadian Tire just couldn't tell me anymore, he didn't have the
knowledge, very nice guy, very smart (and handsome) but didn't have the
knowledge of deep cycle marine batteries and their proper maintenance. Which
is probably good idea, however I know this group has the knowledge, lots of
nice guys, (very handsome also) so I like to hear your opinions. The cheap
ones are good also.

Thanks and enjoy the day

73s





"seediq" wrote in message
...
On 5/10/2013 8:26 AM, Tom wrote:
Hi again

Sorry, I know I asked this question a couple years ago or a similiar one.

I am stumbled again and I don't want to ruin my batteries so I thought I
would ask the pros again.

I have two Marine deep cycle 750 A Nautaulis Canadian Tire Batteries.
225min/115 ah model number is 10-3199-0. These are the bit bigger
batteries about 40 lbs.

I also have the 10am/2am Automatic Canadian Tire 11-1567-0 battery
charger.

I have had these batteries in my garage all winter and about once every
month or 50 days I would bring them up to full charge. Takes about 25 or
30 hours at 10 amp charging until that GREEN light comes on and
automatically shutting off.

My problem is now that the green light isn't coming on. They are just
sitting there bubbling away, I actually had to put about a litre or two
into each of Reverse Osmosis water in to them because I could see they
were low. But the green light will not come on and they keep charging.
About 3 days now.

I took both batteries down to Canadian Tire and the chap used a little
hand tool electronic device that pumped me out a receipt thing (EXP800)
and this battery test told me that the batteries are GOOD. Voltage is
12.63 for one and the other was 12.68 for the other. They measured 922
CCA and 684 CCA (both rated for 750A) so he said they are good. Temp was
19C


I asked him why the green light doesn't come on and the charging stop
but he said because the batteries are fully charged and good that the
charger must be good. And it is good because I used it on another deep
cycle battery I have and the green light came on and it stopped when
fullly charged.

I see the needle is close to the green on the meter but just not moving
over and continues charging at 10 amps with the bigger batteries in
question.

Batteries are almost 4 years old.

Any ideas or comments? Should I stop the charging? or continue until
that green light comes on like it used to? I would like to get a few
more years from these batteries . All coments are appreciated, cheap or
otherwise, I appreciate your expertise very much. Sorry the question is
OFF Topic, but I know you folks have the answer better than the boating
groups. thnx

Best regards and thanks

73s



I can't really tell if your batteries are any good. His tester may not be
that good. I do know how to keep batteries alive for years in my home. I
have an elaborate security system run from a bank of 12 volt batteries.
These batteries each has their own automatic charter. Automatic means that
when the batteries reach full charge the charger shuts off until the
battery needs to be charged again.

Most of the newer style digital looking chargers simply don't work. The
older style that make a clunk sound when they start charging are the good
ones. They shut completely off to prevent over charging and let the
battery run down until it needs charging again. This has worked for me for
many years.

Michael

On 5/10/2013 1:36 PM, Tom wrote:
Yes, sounds like you have your system figured out and it works. On the
exact same receipt paper thing that the Canadian Tire guy's machine
tested had the comment on each test result paper " Avg life in area : 46
MO. So that isn't very long and my last batteries (same style) lasted 8
years. After asking the group this question years ago I have put my
batteries on a better program and care for them better.

My charger makes that "chunk" noise you mentioned when I plug it in.

The Chap at Canadian Tire just couldn't tell me anymore, he didn't have
the knowledge, very nice guy, very smart (and handsome) but didn't have
the knowledge of deep cycle marine batteries and their proper
maintenance. Which is probably good idea, however I know this group has
the knowledge, lots of nice guys, (very handsome also) so I like to hear
your opinions. The cheap ones are good also.

Thanks and enjoy the day

I'm no expert with batteries and different types may vary a bit, I can't
say for sure. I worked for a railroad here in the US with the signal
gang and they used batteries on all the signals so they worked in power
failures. Just like much of the equipment on the railroad, they had
batteries in service for many, many years. I believe I was told they
would be expected to last some 20 years. They looked like car
batteries, not anything special like the huge ones they use at the phone
company. The point is that they used a trickle charge.

So I don't know that you must have a super special top charge detecting
charger to properly maintain batteries. But then there may be
differences in batteries. These were some 40 years ago and I believe
this was before they started adding small amounts of cadmium or similar
things to reduce the need for adding water, etc. Maybe trickle charging
is no longer recommended. But back then that was what the battery
makers wanted you to do to prevent damage, trickle charge.

Have you thought of contacting the company directly rather than through
the stores? I bet their web site has some good info on this.

Rick

On Fri, 10 May 2013 23:36:44 -0400, rickman wrote:

Just like much of the equipment on the railroad, they had
batteries in service for many, many years. I believe I was told they
would be expected to last some 20 years. They looked like car
batteries, not anything special like the huge ones they use at the phone
company. The point is that they used a trickle charge.

Presumably, those were flooded wet cell batteries, not AGM. I don't
think that will work. Flooded cells lose about 1% of their charge per
day due to self discharge. A trickle charger just can't keep up.
However, AGM only loses 1% to 3% per month, which should work well
with a trickle charger.

But then there may be differences in batteries.

Yep. Flooded versus AGM.

These were some 40 years ago and I believe
this was before they started adding small amounts of cadmium or similar
things to reduce the need for adding water, etc. Maybe trickle charging
is no longer recommended. But back then that was what the battery
makers wanted you to do to prevent damage, trickle charge.

One thing nice about trickle charging (and float charging) is that it
seems to reduce suflation.

Have you thought of contacting the company directly rather than through
the stores? I bet their web site has some good info on this.

My conspiracy theory of battery charging is that if you ask the
battery vendor how to maintain and charge their batteries, they will
direct you to the best way to kill the battery, so that you will buy
more batteries. I suspect you may do better asking the battery
charger vendors, who have a financial interest in keeping the
batteries alive.

Mo
http://batteryuniversity.com
http://www.mpoweruk.com
http://www.mpoweruk.com/chargers.htm


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558