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Old 05-16-2015, 10:27 AM   #1
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Maintaining batteries

Will a 1.5 amp charger maintain 2 batteries tied together while the coach is not in use?

If so what is the procedure to hook it up?


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Old 05-16-2015, 12:00 PM   #2
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Will a 1.5 amp charger maintain 2 batteries tied together while the coach is not in use?

If so what is the procedure to hook it up?


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Assuming they are in parallel (most likely since they are probably 12V batteries) they act like one battery. Just hook up the charger and you are good to go. Check the water level if you are going to charge them for long periods of time as it could evaporate more quickly while you are charging.
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Old 05-16-2015, 12:09 PM   #3
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Don't use a charger to maintain batteries, it will probably fry them. You need a battery maintainer such as the brand "Battery Tender".
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Old 05-16-2015, 02:19 PM   #4
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Don't use a charger to maintain batteries, it will probably fry them. You need a battery maintainer such as the brand "Battery Tender".
A 1.5 amp charger will not burn up two 850 amp hour batteries.
That sounds like he has a Battery Tender.
It will maintain them but will not do any damage.
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Old 05-16-2015, 03:08 PM   #5
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If your going to be plugging in a charger, or battery tender unless it's solar, why not just plug in your coach and make sure your battery disconnect switch is in and the charger on your coach will charge the batteries. If it's a newer coach the smart charger is the best thing for your batteries.

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Old 05-16-2015, 03:35 PM   #6
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Will a 1.5 amp charger maintain 2 batteries tied together while the coach is not in use?

If so what is the procedure to hook it up?


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Assume two things; 1. your referring to a trickle charger being 1.5 amps 2. Your house batteries are already at full charge, prior to the maintain charging your asking about.Your good to go then.

Also, over the long haul, you will not "use up" the fixed life as fast that all electronic gizmos have, like the more expensive on board unit. Just sayin'
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Old 05-16-2015, 03:35 PM   #7
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Assuming they are in parallel (most likely since they are probably 12V batteries) they act like one battery. Just hook up the charger and you are good to go. Check the water level if you are going to charge them for long periods of time as it could evaporate more quickly while you are charging.
If you are going to charge two batteries in Parallel. Then you hook the positive to the first battery and the negative to the second battery. Do not put the charger on only one battery.....:
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Old 05-17-2015, 09:44 AM   #8
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If you are going to charge two batteries in Parallel. Then you hook the positive to the first battery and the negative to the second battery. Do not put the charger on only one battery.....:

It doesn't matter. The batteries are not smart enough to know what end of the cable you hooked the charger to.


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Old 05-17-2015, 09:53 AM   #9
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It doesn't matter. The batteries are not smart enough to know what end of the cable you hooked the charger to.
X2, but it doesn't hurt one way or the other.
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Old 05-17-2015, 10:17 AM   #10
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X2, but it doesn't hurt one way or the other.
According to living on 12 volt that is the way to equalize the charge. But people can do what they want. I'm not buying there batteries. By your logic then just hook up the plus and minus and use your negative from the first battery to ground. That is what you are doing by charging only one battery. It's just my answer to the OP right or wrong.....
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