Alternator overcharging batteries
I have 4 AGM batteries in my rig with a total capacity of 440AH (actually 880AH @ 6V, but of course they are wired to get 12V). The data sheet for my Haze batteries species a bulk -> absorption cut...
Forum Discussion
Is the voltage regulator an integrated part of the alternator?
I'm not sure 14.3 is the max. I measured that at the battery, while driving, but the batteries were partially depleted, so it was probably not at max voltage. I guess I should measure it when driving and the batteries have been topped off?
What amperage do alternators typically top out at? I know that the charging current is usually less than 30A, since for a while I (accidentally) had a 30A breaker in-circuit with the charge line and it only tripped when the batter was quite low (below 12V). That was when the charge line had a smaller gauge wire for much of its run, however, so the currents now would be higher.
I'm interested in ways of protecting my alternator by limiting the current. Are there cheap current limiting devices? Alternately, maybe I just install a manually operated SPST switch which disconnects the alternator from the battery, and leave it off except when I really need it (usually the solar is enough, so the alternator charging is often redundant).
I'm not sure 14.3 is the max. I measured that at the battery, while driving, but the batteries were partially depleted, so it was probably not at max voltage. I guess I should measure it when driving and the batteries have been topped off?
What amperage do alternators typically top out at? I know that the charging current is usually less than 30A, since for a while I (accidentally) had a 30A breaker in-circuit with the charge line and it only tripped when the batter was quite low (below 12V). That was when the charge line had a smaller gauge wire for much of its run, however, so the currents now would be higher.
I'm interested in ways of protecting my alternator by limiting the current. Are there cheap current limiting devices? Alternately, maybe I just install a manually operated SPST switch which disconnects the alternator from the battery, and leave it off except when I really need it (usually the solar is enough, so the alternator charging is often redundant).
