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Old 01-04-2011, 08:50 AM   #11
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Quote:
Originally Posted by herk7769 View Post
Dan,
I know its early!
You need another cup of Joe! Wake up!
I think that was a joke.
Dang, I'm ON my 2nd cup!
Sorry......
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Old 01-04-2011, 09:05 AM   #12
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I had two cups also when I posted my reply about the 12 volt LED lights. I should have waited till I had a third!
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Old 01-04-2011, 09:56 AM   #13
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Yea...you're right...my mind was talking faster then my typing.

I checked on it this morning and found the charger to be sitting at 100% and no mess coming from the battery .

Question - I heard one of you use one of those battery tender deals on yours. Could you give me a brief description of how that works? Is it just a trickle charger or does it actually have some kind of "brains" on board to know when to kick on and off. I'm interested if that bad boy would work to keep an "eye" on things during storage without any adverse effects. Would the battery still require some water level maintenance or would keep it form boiling over.

Sorry guys if I hijacked the thread...I can move it to a new post if need be.

Joe
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Old 01-04-2011, 10:04 AM   #14
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Who was that question for? I don't use a battery tender since they stay in the camper and its hooked up to shore power all the time (3 stage converter).

Could you be referring to my trimetric TM2025?
I attached the PDFs for it.
Attached Files
File Type: pdf UsingTriMetric Battery Maintain.pdf (61.0 KB, 10 views)
File Type: pdf TM-2025-Install-Instructions.pdf (208.2 KB, 8 views)
File Type: pdf TM2025-User-Manual.pdf (243.0 KB, 7 views)
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Old 01-04-2011, 10:21 AM   #15
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The question was for KyDan:

Quote:
Originally Posted by KyDan View Post
...
For your consideration-- I also use a "battery tender Jr."
while my trailer is parked at home. This little device keeps
my batteries at full charge all the time.
Keeping your batteries at full charge is the best way to extend their
lives and it means we are always ready to go battery wise.
Good Luck!!

Thanks for the docs on your Trimetric, I'll read those tonight when I get home from work. What's your thoughts between the differences of the "Battery Tender" product and the Trimetric? I might be trying to compare apples to oranges here, but am still curious.

Thanks.

Joe
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Old 01-04-2011, 12:26 PM   #16
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Your Berkshire should have come with a three stage converter from the factory, which would only require a simple plug in while in storage. I, like Herk7769, utilize the built in three stage converter, which does a very good job of keeping the batteries up to par. Just plug it in to a short as possible heavy duty extension cord, and it should take care of your problem. Check the fluid in the batteries every couple months, to be safe. Another heavy battery drain while in storage is the small green light antenna booster, on the entertainment center. Mine will go dead in a week and 1/2, just sitting with this and the CO detector on. Randy
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Old 01-04-2011, 01:15 PM   #17
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I have a question on battery charging when unit is in storage. I have 4 coach batteries and 2 engine batteries. I have one - 1 amp battery tender attached to "one" of the 4 coach bateries and another tender attacheded to "one" of the 2 coach batteries. Will the tender charge all batteries if only attached to one of them ? Or a better way to ask this question - how does one keep all the battteies on my coach on a tickle charge in the off season so as to not have the batteries ruined. Hoping I don't need 6 battery tenders. Way I see it all the batteries are hooked together. Help ! Thanks...Ron
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Old 01-04-2011, 01:55 PM   #18
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Quote:
Originally Posted by rthrbelsewhere View Post
What's your thoughts between the differences of the "Battery Tender" product and the Trimetric? I might be trying to compare apples to oranges here, but am still curious.
Joe
I have 2 marine/crank/deep cycle 12v batteries.
Nothing special. Not nearly as much storage capacity
as some good 6v.
But-- we have camped in the summer for a week with
no hookups, used the ceiling exhaust fan over our bed
a couple hours a night, used some lighting late evening,
early morning, exhaust fan over the stove, water pump,
don't forget the control boards in your water heater
and fridge, etc.
We did not have any TV reception so it was not used.
Got by 6 nights without needing to fire up the little
Honda genny to charge batteries.
Since I can go a week I figure I don't need the
honking big 6v that many other folks use.

I use a battery tender Jr because it does have a "brain"
and it does shut off when the batteries are fully charged.
It has an LED that changes from red to green when the
batteries are fully topped up.
I admit that I don't know if my on board power center is
3 stage or not.
Don't really care.
I know it cost a LOT more than a battery tender Jr.
I -guess- it probably uses more watt$ of power if it's
left on 24/7/365.
I figure if we get a spike or lightning strike I'd rather buy
a new $30 battery tender Jr than a new power center.
Also I know that most all electronics have a life span.
Why risk an expen$ive piece of equipment when a much
cheaper one will do the job?
Just the stupid (noisy) fan on my power center would
cost more than a battery tender Jr.!

(I also use either a battery tender Jr or the cheap Harbor
Freight knock off version on my motorcycle, lawn tractor
and my Silverado when it's sitting idle most of the winter.
Of course, none of these have a built in charger!)

Others around here use their on board built in chargers
24/7/365 and get by fine. I probably would too.
I just do it my way....... (apologies to Frankie)

I gotta plug a local business.
http://www.derbycycles.net/
They have the Battery tender Jr for $20 and I -think-
free ground shipping. Not positive about the shipping...
That is the best price I've found anywhere period.

My 2
YMMV
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Old 01-04-2011, 02:15 PM   #19
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Quote:
Originally Posted by Team Wilhelm View Post
I have a question on battery charging when unit is in storage. I have 4 coach batteries and 2 engine batteries. I have one - 1 amp battery tender attached to "one" of the 4 coach bateries and another tender attacheded to "one" of the 2 coach batteries. Will the tender charge all batteries if only attached to one of them ? Or a better way to ask this question - how does one keep all the battteies on my coach on a tickle charge in the off season so as to not have the batteries ruined. Hoping I don't need 6 battery tenders. Way I see it all the batteries are hooked together. Help ! Thanks...Ron

Someone correct me if i'm wrong here, but I think you would be better off hooking up the battery tender to the same location where your red and black main lines connect rather then to "just one of the 4 coach batteries". That way your charge is cycling through all of the batteries and it treats it as one HUGE 12V instead of having it charge the one battery and letting that one battery equalize the other 3. Same thing goes for the 2 engine batteries. I think that leaving it the way you have it now would cause an uneven charge between all your batteries, but i'm no engineer. I know one of the others have researched this already, but for the life of me, I can't find his original post on this subject. Hopefully he'll chime in and I'll keep looking too.

Edit: I found it - More batteries (Postings and references by herk7769)

Joe
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Old 01-04-2011, 04:43 PM   #20
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I am not familiar with the battery tender you are using, but I see no reason why the same logic for equalizing the battery resistance through the entire bank to prevent uneven charging and discharging would not apply in this situation as well. One lead on the closest (+) and one on the furthest (-). A photo of your bank setup might help visualize your needs.
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