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Old 13-06-2015, 23:02   #1
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Newmar Battery Isolater, is it worthwhile using

Picked up a Newmar Battery Isolator model 1-2-120. Is there a reason I shouldn't install this part?? Have a starter Group 27 Gel Battery and a house bank 4 6v Golf Cart batteries. Rely mainly on 260 watts of solar panel for charging. Do have a 50 amp alternator on the engine but I try to use the engine as little as possible.
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Old 14-06-2015, 14:51   #2
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Re: Newmar Battery Isolater, is it worthwhile using

bump, anyone know what the negatives are on this or any other battery isolator technology.
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Old 14-06-2015, 15:22   #3
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Re: Newmar Battery Isolater, is it worthwhile using

roverhi, what is your objective for using the isolator? As I understand it, you only lose voltage (voltage drop due to diodes) and gain nothing that a battery combiner does better. It's old school and now superceded by more modern, efficient systems.
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Old 14-06-2015, 16:03   #4
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Re: Newmar Battery Isolater, is it worthwhile using

Your solar controller likely will not work with it. These are dinosaur saddles. A combiner or Echo type charger would be much better suited..
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Old 15-06-2015, 09:19   #5
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Re: Newmar Battery Isolater, is it worthwhile using

You might then undercharge batteries, due to diodes. Combines are a better option.
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Old 15-06-2015, 11:36   #6
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Re: Newmar Battery Isolater, is it worthwhile using

Quote:
Originally Posted by roverhi View Post
Picked up a Newmar Battery Isolator model 1-2-120. Is there a reason I shouldn't install this part?? Have a starter Group 27 Gel Battery and a house bank 4 6v Golf Cart batteries. Rely mainly on 260 watts of solar panel for charging. Do have a 50 amp alternator on the engine but I try to use the engine as little as possible.
Roverhi,

As others have mentioned, the diode type isolators do have a voltage drop on the output side (though that is somewhat mitigated by using appropriate diodes, like the Schottky type...]

However, the voltage drop can be compensated for by making sure the voltage regulator voltage sensing wires are connected to the battery side of the isolator. That way your alternator reg and solar reg, etc., output increased voltage to make up for the loss...

Before installing make sure it is compatible with your alternator and regulator(s) [e.g., typically diode isolators and self-exciting alternators are incompatible...]

I hope this is helpful.
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