Tarpon Terry Posted March 25, 2016 Report Share Posted March 25, 2016 Since I now live in Tampa with no place to store my boat and trailer on the property, I have it in a RB/Boat Storage yard. I did buy a Battery Tender solar charge with a charge controller built in. I works fine but, as rigged, it does ONE BATTERY AT A TIME. Is there a way to set it up to charge all three batteries at once. I'm aware of the problem of draining a more fully charged battery into a drained one and am concerned about the two batteries in series. I'm guessing that the 3 battery isolator devices might work. But first, I thought I might check to see if anybody has done this or has a solution. Link to comment Share on other sites More sharing options...
SCFD rtrd. Posted March 27, 2016 Report Share Posted March 27, 2016 I've never used solar, but it seems that isolators will keep the batteries from draining among themselves. With regard to the batteries in series; as long as you connect the charger to the pos. & neg. of each battery there should not be a problem. Basically, you would connect it just like a 3 bank a/c charger. Link to comment Share on other sites More sharing options...
Tarpon Terry Posted March 27, 2016 Author Report Share Posted March 27, 2016 I think what I will do is to replace my huge 40" long 15 watt solar charger with three 5 watt solar chargers. One for each battery. Since these chargers have charge controllers, they will isolate the batteries as well as not over charging. I have purchased three new Optmia batteries. Kinda disappointed that they only lasted 10 years. 🙀🙀🙀🙀🙀 Link to comment Share on other sites More sharing options...
DonV Posted March 27, 2016 Report Share Posted March 27, 2016 Jeeeez TarponT I hope you saved the sales receipt to ease the return process!!! Link to comment Share on other sites More sharing options...
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