charge controller question
My installation (brand new) is on a sailboat. I have two 135W Kyocera panels with a Morningstar SunSaver-20 controller (PWM type) and two pairs of 6v golf cart batteries wired in series, for a 12v 220 amp-hour house battery bank. My concern is that after initial installation, with the batteries fully charged, the battery monitor (a linc-10 unit) showed 14.4 to 14.5 volts ALL DAY LONG in sunny southern California. My concern is that this will lead to overcharging and excessive gassing of the flooded batteries, with reduced lifespan and safety issues due to the gassing in an enclosed space. This initial run was at the slip, with the shore power connected and full batteries. I intend to use the PV system at anchor or cruising, off the grid, and I'm sure the dynamics would be different, but I'm still concerned about the above issues. Tech support inquiry from Morningstar was not too helpfull ("buy a MPPT controller"). Hey, I just bought the SunSaver for $100, and I'd like not to just junk it. So, any advice or suggestions for my situation?
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