Bulk-Absorption Charging Voltage
2 Concord 8D (258 AH each) Freedom 25 Inverter-Charger (130 amp) Trimetric 2025 Gauge I'm dry camping and charging my batteries. They were 30% discharged. My Concords call for 14.2-14.4v absorpti...
Forum Discussion
No, you should see amps taper at an SOC depending on the charging rate.
The charging rate is the charging amps/battery capacity in AH. Higher charging rate means you get to Vabs faster and at a lower SOC.
With a high charging rate you can reach your Vabs at 65% SOC. At a low charging rate you might not see amps taper till at 90% SOC.
So if you are already at reduced amps at 70% it means you have a fairly high charging rate and are already on the tapering curve (caused by reducing battery acceptance as SOC rises)
Which means your battery bank is lower in AH than you think, which would jack up the charging rate (same as if the bank were smaller in size) Sulfation reduces bank AH capacity. So does cold temperatures.
The charging rate is the charging amps/battery capacity in AH. Higher charging rate means you get to Vabs faster and at a lower SOC.
With a high charging rate you can reach your Vabs at 65% SOC. At a low charging rate you might not see amps taper till at 90% SOC.
So if you are already at reduced amps at 70% it means you have a fairly high charging rate and are already on the tapering curve (caused by reducing battery acceptance as SOC rises)
Which means your battery bank is lower in AH than you think, which would jack up the charging rate (same as if the bank were smaller in size) Sulfation reduces bank AH capacity. So does cold temperatures.
