I went to the boat this weekend and it had been closed up and cold. Maybe upper 30's lower 40's. I checked the battery voltage and it read 12.6 volts. I leave a Guest 10 amp charger, 5 amps per bank, on all the time to maintain the batteries at the dock. The charger was showing that it was on, but not charging, indicating that it thought the banks were fully charged. There is no temp. sensor on the charger for the batteries. I have a single bank smart charger 55 amps that I use with the genset when away from the dock. I plugged it in and it brought the batteries back up to 13.4-13.7 volts where they generally stay when charged and warm in the summer. I had also turned the heat on, but doubt that the batteries had warmed much from the heater, but possibly some from the higher capacity of the larger charger. I don't have a battery monitor. Is my assumption that the temp. is the issue that limits the voltage cold and that the larger charger is better at sensing this issue even without battery temp. sensing? Any explanations or opinions? Thanks. **************One site has it all. Your email accounts, your social networks, and the things you love. Try the new AOL.com today!(http://pr.atwola.com/promoclk/100000075x1212962939x1200825291/aol?redir=http://www.aol.com/?optin=new-dp %26icid=aolcom40vanity%26ncid=emlcntaolcom00000001)
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