Charging AGM Batteries
I was looking for info on trying to charge, recharge AGM Batteries. If a convenional automatic charger is set to the deep cycle 2 amp setting, will this over charge the AGM Battery? Constructive comme...
Forum Discussion
dddire. 0.3c means the charging current is limited to .3 the capacity measured at the standard 20 hour rate. So a 100 amp hour battery with a 0.3c current limit should not be fed with more than 30 amps.
My concerns with AGM's in my configuration, is that they can handle what my vehicle is capable of feeding them. I have no other charging source which can exceed 0.3C.
I have seen my vehicle's charging system put out more than .3c limit for the 3 group 65 or 24 size AGM batteries I was considering. Each time it will also climb upto least 14.8V too given a drive longer than a few miles. Perhaps it is too shortlived to be dangerous, but the shortlived aspect could be the higher resistance of my flooded batteries. I don't know how the vehicle's Voltage Regulator will react to thirsty AGM batteries
If an AGM is limited to 0.3C does it also sacrifice other AGM attributes like very low self discharge and maintaining higher voltage under heavy load / maintaining higher CCA for the same DOD as a similar capacity flooded battery?
If I'm spending twice as much for AGM, I want all their benefits, not just the low/no maintenance aspect, and I don't want my vehicle to be able to exceed their charging specifications. I might not need the low self discharge or the ability to power high inverter loads with less overall battery capcity, but at 2x the price...... I certainly don't want to pop their vents going down the road, and I think my vehicle can and will and I am not modifying my vehicles cabling for a 0.3c limit, and the voltage I can do nothing about as the regulator is internal to the engine computer.
I am also concerned that the AGM's that claim they can handle 3.0 C like Odyssey, that they will smoke my alternator when heavily depleted and I get on the highway at steady 2100 engine rpm, where it currently( pun intended) can produce 85 to 100 amps, depending on temperature and battery SOC.
My concerns with AGM's in my configuration, is that they can handle what my vehicle is capable of feeding them. I have no other charging source which can exceed 0.3C.
I have seen my vehicle's charging system put out more than .3c limit for the 3 group 65 or 24 size AGM batteries I was considering. Each time it will also climb upto least 14.8V too given a drive longer than a few miles. Perhaps it is too shortlived to be dangerous, but the shortlived aspect could be the higher resistance of my flooded batteries. I don't know how the vehicle's Voltage Regulator will react to thirsty AGM batteries
If an AGM is limited to 0.3C does it also sacrifice other AGM attributes like very low self discharge and maintaining higher voltage under heavy load / maintaining higher CCA for the same DOD as a similar capacity flooded battery?
If I'm spending twice as much for AGM, I want all their benefits, not just the low/no maintenance aspect, and I don't want my vehicle to be able to exceed their charging specifications. I might not need the low self discharge or the ability to power high inverter loads with less overall battery capcity, but at 2x the price...... I certainly don't want to pop their vents going down the road, and I think my vehicle can and will and I am not modifying my vehicles cabling for a 0.3c limit, and the voltage I can do nothing about as the regulator is internal to the engine computer.
I am also concerned that the AGM's that claim they can handle 3.0 C like Odyssey, that they will smoke my alternator when heavily depleted and I get on the highway at steady 2100 engine rpm, where it currently( pun intended) can produce 85 to 100 amps, depending on temperature and battery SOC.
