Originally Posted by
Wannabe...
Maj, no risk of damage for undervoltage. When it drops below it's range, it will just shut off to protect itself. First thing I'd do is charge that battery to max. Then put a meter on it after it's set for an hour or so and check the actual volts at the battery. Then meter the FF plug to see if there's a difference. Odd thing is, if it's hooked up to the starting battery, your alternator should have been putting 13 to 15v to that battery while underway. I'm thinking you might have a bad battery or possibly a bad voltage regulator on your boat. (do you have a tachometer and is it functioning properly?) Possibly a bad install on the FF power, but that's not likely. Was the pic right after you got in the water with no run? Do you normally charge your cranking battery between trips? Was it sluggish to start? It's possible that you used it hard your last trip out, didn't recharge and your outboard had not had enough time to fully recharge it, but anything in the 10V range is dang low.
Glad to see somebody's paying attention to my advice on the dielectric grease. Hint, hint DD.
Wannabe...