Deep cycle battery: RC vs Ahr??
I need some of you "smarter than me" people to enlighten me ... please. I'm looking at batteries for my RV (travel trailer) to be able to boondock longer without running the genny or going solar (whi...
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If there is going to be a math debate
Is best to get all the 'terms' correct
RC is the number of minutes at 25 amps
It is simple and straight forward the same for every listing only the number of minutes change
The 20hr rate is Not 20 amps
It is the number of amp hrs discharged in 20 hrs, the time is fixed
The amps rate of discharge is different with every battery
A 100 amphr battery will supposedly carry 5 amps for 20 hrs
A 80 amphr battery is 4 amps for 20 hrs
That's why something that is 150 AmpHrs at 1 amp load is a ridiculous rating
I am using agm batteries, that use the 20hr rating system
I think RC is a better rating system for capacity
Is best to get all the 'terms' correct
RC is the number of minutes at 25 amps
It is simple and straight forward the same for every listing only the number of minutes change
The 20hr rate is Not 20 amps
It is the number of amp hrs discharged in 20 hrs, the time is fixed
The amps rate of discharge is different with every battery
A 100 amphr battery will supposedly carry 5 amps for 20 hrs
A 80 amphr battery is 4 amps for 20 hrs
That's why something that is 150 AmpHrs at 1 amp load is a ridiculous rating
I am using agm batteries, that use the 20hr rating system
I think RC is a better rating system for capacity
