adding a 2nd battery with a solonoid

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  #1  
Old 10-11-07, 12:27 PM
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Question adding a 2nd battery with a solonoid

I want to add a second battery that charges when the main battery is full to use as an auxiliary power source.
 
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  #2  
Old 10-11-07, 02:40 PM
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You might try an Isolator Relay Delay. Use this in conjunction with a large solinoid 50-100amp or more depending on your charging needs. The relay delay will only close the solinoid when the system has adequate spare voltage to charge the spare battery. You can also add a momentary switch for auxillary start (if your solinoid can handle it).. Look the Isolator Relay Delay up on the net or see an RV dealer they can set you up.
 
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