AGM Charge Rates and Times
I am interested in knowing how fast AGM deep cycle batteries charge, especially in the upper SOC range. Things to consider: - Ah Capacity of battery/bank - starting SOC or DOD, or Ah's consum...
Forum Discussion
Probably the best and more reliable source of information about cycle life is found within the Lifeline PDF manual download. The rapid charge rate was manipulated by hand but for the most part a charging rate of 14.9 was utilized, when temps started increasing 1.2C/min I reduced the rate. This had to be done monitoring all six cells.
I fully expect the battery to endure 500 cycles, taken to 30% state of charge and terminate the lifespan use at 80% of total capacity. The battery can not sit at 30% charge for days on end. AGM's require return to 100% state of charge after deep discharges.
This is exactly why AGM batteries are more difficult to manage than flooded batteries when heavily cycled. An amp hour meter, calibrated, is mandatory, read essential.
Some argue an amp hour meter is not needed. Inevitably their system battery capacity is small and they have an abundance of recharging ability.
I fully expect the battery to endure 500 cycles, taken to 30% state of charge and terminate the lifespan use at 80% of total capacity. The battery can not sit at 30% charge for days on end. AGM's require return to 100% state of charge after deep discharges.
This is exactly why AGM batteries are more difficult to manage than flooded batteries when heavily cycled. An amp hour meter, calibrated, is mandatory, read essential.
Some argue an amp hour meter is not needed. Inevitably their system battery capacity is small and they have an abundance of recharging ability.
