Why do battery needs a float current?
I mean, when it's full, floating and there are no loads? To fight the self-discharge, alright. But it draws a bit more than self-discharge would require. I have 300 AH AGM bank, self-discharge ...
Forum Discussion
Water in AGM doesn't - normally - boil out.
Float voltage =13.6, battery manual suggests 13.6-13.8 for "float use". Temperature-compensated with sensor on battery, right now 13.8V at 18C, just where it should be. Outside thermometer few feet away reads 19C in the shade but batteries are in the shade AND in the wind.
Controller display accuracy +/- 0.1A exceeds the discrepancy of the observed 0.3A VS expected 0.0A (display won't read anything below 0.1A). Separate multimeter reads quickly fluctuating current 0.21-0.40 A, controller display is slower to respond and is averaging it to 0.3A.
Float voltage =13.6, battery manual suggests 13.6-13.8 for "float use". Temperature-compensated with sensor on battery, right now 13.8V at 18C, just where it should be. Outside thermometer few feet away reads 19C in the shade but batteries are in the shade AND in the wind.
Controller display accuracy +/- 0.1A exceeds the discrepancy of the observed 0.3A VS expected 0.0A (display won't read anything below 0.1A). Separate multimeter reads quickly fluctuating current 0.21-0.40 A, controller display is slower to respond and is averaging it to 0.3A.
