07-08-2006, 03:44 AM
The SLA's they are talking about are most likely used for alarm systems. I use one ice fishing. Fish finders do not drain the large batteries very fast you could go a month or so before having to charge the large batteries. I would not piss around with the small SLA batteries on your boat. One large battery works fine but if you have the room I would add a second large battery. I have two large ones on my boat.
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