Reserve Capacity Question (Battery)
I am trying to compare battery's and they do not make it easy. Battery states: Reserve Capacity as 125 minutes at 75A. I need to know what it is at 25A? Can anyone help? Please.
Forum Discussion
YOu need to know the C/20 amp hour capacity. NOTHING ELSE MATTERS.
Reserve capacity only applies to teh STARTING batteries.
From Lifeline a Group 27 (one model) was 100 amp hours at C/20
From Optima Same size 66 amp hours at C/20
NOTE: for most all save OPTIMA that Lifeline rating (100 at C/20) will be within 10% or less (IE 95 is 5% less)
I've researched several battery makes. and though some offer multiple lines some with a slightly higher capacity.. That holds almost constant and even teh multiple lines it is usually +/- 10 Percent of a median figure (95 for the group 27)
Stick with True Deep cycle for the house. This means (For the most part) GC-x Batteries
US battery and Interstate and DEKA (3 major makers) the GC2 is 210=220-230 amp hours (DEKA (east penn) is 210 or 230 depending on model G-10 or G-20)
24's are a bit under 75 AH. 27/29 are just below/over 100 and Group 31 is around 110-130.
NOTE GC-12 (12 volt golf car) I do not remember the capacity and GC-2 you need TWO of them in sereies to get 220 amp hours at 12 volt. THIS is what I recommend.
Optima.. leave it alone.
Reserve capacity only applies to teh STARTING batteries.
From Lifeline a Group 27 (one model) was 100 amp hours at C/20
From Optima Same size 66 amp hours at C/20
NOTE: for most all save OPTIMA that Lifeline rating (100 at C/20) will be within 10% or less (IE 95 is 5% less)
I've researched several battery makes. and though some offer multiple lines some with a slightly higher capacity.. That holds almost constant and even teh multiple lines it is usually +/- 10 Percent of a median figure (95 for the group 27)
Stick with True Deep cycle for the house. This means (For the most part) GC-x Batteries
US battery and Interstate and DEKA (3 major makers) the GC2 is 210=220-230 amp hours (DEKA (east penn) is 210 or 230 depending on model G-10 or G-20)
24's are a bit under 75 AH. 27/29 are just below/over 100 and Group 31 is around 110-130.
NOTE GC-12 (12 volt golf car) I do not remember the capacity and GC-2 you need TWO of them in sereies to get 220 amp hours at 12 volt. THIS is what I recommend.
Optima.. leave it alone.
