Thor Forums

[Beau388]

I think most flooded battery chargers float at 13.2 to 13.5 volts. My FWCO 8955 charger did and my PPS 5365 does float between 13.4 and 13.5 normal temperature days. While the ideal for new batteries to keep the water level constant, the slightly higher voltages compensate for used batteries and colder weather. The only time you will see a 13.1 volt float voltage is in new batteries and hot weather (above 90 degrees ambient). Of course you can buy a charger that monitors battery temperatures to ensure your batteries are kept at max charge capacity.