acceptance charging rate AGM batteries
Hi all, It is generally thought that acceptance rate for a flooded deep cycle battery is about 12.5 amps per 100 amp-hours of capacity once the bank is at 85% state of charge. I know that accept...
Forum Discussion
Thick plate, thick mat AGM batteries do not like high discharge rates for the exact same reason -real- deep cycle batteries do not like high current, either in or out.
Over-amping an AGM brings forth spectacular effects the same as it does with a flooded battery except the AGM pops its valves and does not have surplus liquid to mitigate the smoke.
When voltage drops, high cranking amp ability becomes a moot point. A plow horse and a quarter horse are not interchangeable (unless chased by yellowjackets).
Using a mule in a steeplechase gives a person pause.
This is why Concorde with it's fanaticism for exact material specs, and near unbelievable precision (laser) of assembly tolerances, renders a product that does both - decent high discharge rates and cycle survivability. Ever compare the difference between cotton-terry and microfiber for the amount of water a square foot of each can hold? Gee, what if an absorbed glass mat OEM were to seek and use a matting that imposed the same theory? What if this miracle matting was expensive? Too expensive for copycats to consider - because it demands laser alignment during assembly?
Never over-amp any battery. A discharge voltage minimum should be established, monitored (if load is variable), and reacted to. What value has a six cell battery operating at 8.0 volts? Even at 9.6 volts a battery has a discharge time limit of 15-seconds and even then the product is of questionable value. 10/12ths is 4/5ths. Twenty percent. So (say) 200 amps at 10 volts is 80% of the energy of 200 amperes at 12 volts. Power is volts + amps. The high(er) operating voltage plateau of AGM/Lithium is meaningful in terms of realized power. In fact lithium's tendency to hold a flatter voltage line over it's capacity percentage level is one of it's biggest claims to fame.
If a person desires more amperage, the answer is easy, add more same type batteries. Telecom batteries have an extremely narrow spectrum of performance excellence. Enjoy that excellence. If unsatisfied, deal with the "why".
If it takes four telecom batteries to maintain inverter draw voltage equal to a single Deka or other brand. So be it. What is, is. The Telecom battery is not inferior. It will be alive when the higher CCA/lb battery is on it's way to the recycler.
I had the space. I had the weight carrying capacity, and (sniff) I had the money. So I chose eleven tons of batteries in order to satisfy both discharge amperage and cycle life maximization. Carried atop springs and tires, there's most likely going to be a grand compromise between weight and performance. A wise person knows this in advance and can deal with the negative aspects of their choice.
Key Words:
Deal
With
It
Over-amping an AGM brings forth spectacular effects the same as it does with a flooded battery except the AGM pops its valves and does not have surplus liquid to mitigate the smoke.
When voltage drops, high cranking amp ability becomes a moot point. A plow horse and a quarter horse are not interchangeable (unless chased by yellowjackets).
Using a mule in a steeplechase gives a person pause.
This is why Concorde with it's fanaticism for exact material specs, and near unbelievable precision (laser) of assembly tolerances, renders a product that does both - decent high discharge rates and cycle survivability. Ever compare the difference between cotton-terry and microfiber for the amount of water a square foot of each can hold? Gee, what if an absorbed glass mat OEM were to seek and use a matting that imposed the same theory? What if this miracle matting was expensive? Too expensive for copycats to consider - because it demands laser alignment during assembly?
Never over-amp any battery. A discharge voltage minimum should be established, monitored (if load is variable), and reacted to. What value has a six cell battery operating at 8.0 volts? Even at 9.6 volts a battery has a discharge time limit of 15-seconds and even then the product is of questionable value. 10/12ths is 4/5ths. Twenty percent. So (say) 200 amps at 10 volts is 80% of the energy of 200 amperes at 12 volts. Power is volts + amps. The high(er) operating voltage plateau of AGM/Lithium is meaningful in terms of realized power. In fact lithium's tendency to hold a flatter voltage line over it's capacity percentage level is one of it's biggest claims to fame.
If a person desires more amperage, the answer is easy, add more same type batteries. Telecom batteries have an extremely narrow spectrum of performance excellence. Enjoy that excellence. If unsatisfied, deal with the "why".
If it takes four telecom batteries to maintain inverter draw voltage equal to a single Deka or other brand. So be it. What is, is. The Telecom battery is not inferior. It will be alive when the higher CCA/lb battery is on it's way to the recycler.
I had the space. I had the weight carrying capacity, and (sniff) I had the money. So I chose eleven tons of batteries in order to satisfy both discharge amperage and cycle life maximization. Carried atop springs and tires, there's most likely going to be a grand compromise between weight and performance. A wise person knows this in advance and can deal with the negative aspects of their choice.
Key Words:
Deal
With
It
