motorhome coach batteries
i need new coach batteries and wondered what kind i should purchase. at present have 2 12v interstates but very unhappy with their performance thankyou in advance hb ive been told that 6v per...
Forum Discussion
"Perform"
"Perform?"
"PERFORM!"
The advantage of thick plates and glass mat separators, is it makes a battery far more survivable to abuse and when treated halfway right, adds a profound number of cycles to the battery lifespan.
Has little to do with CCA, Reserve Capacity or Ampere Hours.
If you robbed the plates out of my Rolls batteries, chopped them and stuffed them in a car jar or even a golf car jar, you would end up with a fine 9 amp hour battery.
The tropic of Cancer line is 770 mile north of Las Peñas.
You might want to re-phrase the statement of You can get 12 volt golf car batteries these days, to...
You can also get six cell batteries for golf cars these days.
One of the main claims to fame for absorbed glass mat technology is a mat saturated with 1.300 density acid feeds pure lead plates. The battery protects itself by having the mat run out of electrolyzing potential before the plates become sulfated as much as a flooded battery. Got it?
Manufacturers try to squeeze all the plates they can get away with into an AGM accumulator to overcome plates that do-not-cycle as deeply as do flooded battery plates.
The only way to establish if a battery charges "faster" or "slower" than another type of battery is to present both discharged units with a fixed voltage, determine the amperage, and kWh hours consumed until a battery reaches a point in time where fixed voltage reduces to a set number of amperes flowing.
So we have two different chemistries at work. Two different operational voltage characteristics. Are we using the identical voltage set point on both? Although the static voltage characteristics of an AGM are higher than the flooded, is the charging voltage correct according to the manufacturer? Do we charge an AGM to the same absorbsion value as the flooded battery? New batteries are easy to test. How do you know when an AGM has lost capacity? A failed AGM may exhibit exactly the same voltage characteristics as a new good AGM but have 30% of the capacity.
Skewing this issue is my age old rant about flooded batteries getting cheated by "smart chargers". Don't laugh AGM owners, you're not in the same boat but you are sure as hell on the same lake. Voltage alone is a ----poor way to determine the capacity of fill for a valve regulated battery. Fill points must be determined by kWh transactions, or trends and tendencies of voltage PLUS amperage values (when filling).
I conduct schools for cruisers who get confounded by their "amp hour meter" and end up with a "bank balance" so far out of kilter their amp hour gauge is worthless until batteries are corrected and kWh are zeroed. 3-amps per 100 amp hours at 14.4 volts is a good compromise with AGM batteries. This will slow the frequency to condition the battery but not eliminate conditioning altogether.
"Perform?"
"PERFORM!"
The advantage of thick plates and glass mat separators, is it makes a battery far more survivable to abuse and when treated halfway right, adds a profound number of cycles to the battery lifespan.
Has little to do with CCA, Reserve Capacity or Ampere Hours.
If you robbed the plates out of my Rolls batteries, chopped them and stuffed them in a car jar or even a golf car jar, you would end up with a fine 9 amp hour battery.
The tropic of Cancer line is 770 mile north of Las Peñas.
You might want to re-phrase the statement of You can get 12 volt golf car batteries these days, to...
You can also get six cell batteries for golf cars these days.
One of the main claims to fame for absorbed glass mat technology is a mat saturated with 1.300 density acid feeds pure lead plates. The battery protects itself by having the mat run out of electrolyzing potential before the plates become sulfated as much as a flooded battery. Got it?
Manufacturers try to squeeze all the plates they can get away with into an AGM accumulator to overcome plates that do-not-cycle as deeply as do flooded battery plates.
The only way to establish if a battery charges "faster" or "slower" than another type of battery is to present both discharged units with a fixed voltage, determine the amperage, and kWh hours consumed until a battery reaches a point in time where fixed voltage reduces to a set number of amperes flowing.
So we have two different chemistries at work. Two different operational voltage characteristics. Are we using the identical voltage set point on both? Although the static voltage characteristics of an AGM are higher than the flooded, is the charging voltage correct according to the manufacturer? Do we charge an AGM to the same absorbsion value as the flooded battery? New batteries are easy to test. How do you know when an AGM has lost capacity? A failed AGM may exhibit exactly the same voltage characteristics as a new good AGM but have 30% of the capacity.
Skewing this issue is my age old rant about flooded batteries getting cheated by "smart chargers". Don't laugh AGM owners, you're not in the same boat but you are sure as hell on the same lake. Voltage alone is a ----poor way to determine the capacity of fill for a valve regulated battery. Fill points must be determined by kWh transactions, or trends and tendencies of voltage PLUS amperage values (when filling).
I conduct schools for cruisers who get confounded by their "amp hour meter" and end up with a "bank balance" so far out of kilter their amp hour gauge is worthless until batteries are corrected and kWh are zeroed. 3-amps per 100 amp hours at 14.4 volts is a good compromise with AGM batteries. This will slow the frequency to condition the battery but not eliminate conditioning altogether.
