AGM Adventures- Update
Updated 31 Jan 17 Initial results. I will re-test the AGM after it does one deep cycle to confirm these results. EDIT completed 6 Oct Test was to put the test battery as the only battery run...
Forum Discussion
I am good for chargers :)
My AGM will normally Float on the Adjustable (voltage) PowerMax converter whether at home or away on 15a shore power. That 55 amper will only do an above spec amperage recharge of the AGM "by accident" if there is a shore power failure when away and the power comes back on.
At home the AGM will be recharged from whatever lower SOC it got to while away by the Vector 35 amper which does 33 amps constant in the bulk stage. I wimped out and used the 20a setting last time, but now I will just go ahead and use the 33 amps based on LY's notion above.
When the AGM needs a goosing, then after the Vector is done (ie after the second run at the 2 amp setting), before putting it on Float, I can use that Adjustable converter set to 14.8 (25C) or a little more, for a short time, which will be a low amps charge, then I can just dial it down to the correct Float voltage and leave it.
I won't need an ammeter for any of that, but the Vector part has an amps readout which is handy to see the recharging progress.
Normally, a 30% recharge is tons with flooded batts. Eg my normal 100 amps on the four 6s (now 410AH worth) is 24%, while the 155 amps I use on the six batt bank (about 680AH worth) is 23%
You don't save much generator time by going to a higher percentage charging rate than 30. It is a steep diminishing returns curve above 30% and this would also be true for AGMs AFAIK.
My AGM will normally Float on the Adjustable (voltage) PowerMax converter whether at home or away on 15a shore power. That 55 amper will only do an above spec amperage recharge of the AGM "by accident" if there is a shore power failure when away and the power comes back on.
At home the AGM will be recharged from whatever lower SOC it got to while away by the Vector 35 amper which does 33 amps constant in the bulk stage. I wimped out and used the 20a setting last time, but now I will just go ahead and use the 33 amps based on LY's notion above.
When the AGM needs a goosing, then after the Vector is done (ie after the second run at the 2 amp setting), before putting it on Float, I can use that Adjustable converter set to 14.8 (25C) or a little more, for a short time, which will be a low amps charge, then I can just dial it down to the correct Float voltage and leave it.
I won't need an ammeter for any of that, but the Vector part has an amps readout which is handy to see the recharging progress.
Normally, a 30% recharge is tons with flooded batts. Eg my normal 100 amps on the four 6s (now 410AH worth) is 24%, while the 155 amps I use on the six batt bank (about 680AH worth) is 23%
You don't save much generator time by going to a higher percentage charging rate than 30. It is a steep diminishing returns curve above 30% and this would also be true for AGMs AFAIK.
