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Old     (camassanger)      Join Date: Oct 2009       08-09-2012, 3:35 PM Reply   
OK guys, I've been reading most of the day here on WW about how to do a 2 battery bank system and automate the charging from either the alternator and/or an AC shore charger.

Here is my system:
Battery 1 used for stereo only (3 amplifiers: JL 600.4, PDX600.1 and Phoenix Gold for interiors) - Deka SeaMate G24 (14 months old)
Battery 2 is the boat starter battery - Deka SeaMate G24 (14 months old)
Sure Power Isolator 9523A
ProMariner ProSport 8 - 2 bank shore charger. Independently charges/floats each battery

Here's my problem:
My PerfectPass started acting up a while back, then last time out, the boat starter battery wouldn't start the boat. I left my AC charger disconnected for 24 hours before this last trip out. I'm wondering if A) the batteries are somehow now bad or 2) the isolator (voltage drop) is the problem.

After reading on WW all morning, I believe I need to eliminate the isolator and switch it out with a Sure Power 1314 (or a Blue Sea ACR?). However, when I do that, I will also need some sort of disconnect so that when I plug in the ProMariner it is able to charge both batteries independently. So how to do that AUTOMATICALLY? I know I can use a perko or cheapo battery disconnect switch, but I want this automated so that when the boat is running (on) the combiner is doing what its supposed to. And when the boat is off, the batts are separated and the shore charger can do it's thing. What is the easiest way to do this? I am thinking I could run a solenoid (old Ford style) that closes the circuit when the boat is on, then opens when the boat is off. But, wondering if there is a better way...

Any advice here would be greatly appreciated (I hate having issues like this in August!)

 
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