Question: Battery Reserve Capacity
Noticed the reserve capacity for a particular RV battery was, I believe, 140 minutes at 25 amps. I assume the battery is discharged to 0 percent (11.9v) to get this rating? If it is 0 percent, is ...
Forum Discussion
otrfun wrote:
Really appreciate everybody's input. I thought the reserve capacity would give me some idea of how many amp hours of current I could expect to get out of a given battery. Apparently that's not the case.
Interstate says their SRM-24 battery is capable of producing 5 amps for 17.1 hours or 15 amps for 4.9 hours. However, without knowing what voltage they're discharging to, it's hard to determine what this battery is really capable of.
Is there somekind of battery spec that I can use to get a very general idea (nothing exact) of how many amp hours of current I can expect to get out of a new battery (24, 27, or GC2) when it's discharged from 12.7 volts (100 percent) to 12.2 volt (50 percent)?
Thanks!
You may have missed this sentence over at Battery University: "No accurate RC to Ah conversion exists but the most common formula is RC divided by 2 plus 16. A short method is dividing RC by 1.9."
