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 Battery Isolator		  New Topic  Topic Locked
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Happy D
Admiral

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921 Posts
Initially Posted - 04/20/2007 :  15:44:02  Show Profile
Do battery isolators with a higher amperage have lower resistance?

ie 35 amps through a 70 amp isolator versus a 240 amp isolator.
1977 SK/SR Dinette Hull #29
1979 ChrisCraft 251
1965 Chris Craft Cutalss
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 04/20/2007 :  21:23:35  Show Profile  Visit Leon Sisson's Homepage
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Happy D</i>
<br />Do battery isolators with a higher amperage have lower resistance?<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">That's the general idea. However, if you're considering using a battery isolator to separate your cranking battery from your house bank, you might also want to take a look at a [url="http://www.yandina.com/combInfo.htm"]Battery Combiner[/url].

-- Leon S.
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Stu Jackson C34
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844 Posts
Response Posted - 04/21/2007 :  10:10:55  Show Profile
They still drop a half to a full volt. Isolators are 1950s technology. Since there is only 1 volt difference between a full and empty battery, why use an isolator in any charging system? Either use a switch or a relay (the combiner is a relay).
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
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