Originally Posted by rdjjef
sorry for silly question, but can someone translate B Clemans info below??
Not a silly question at all. These are important terminology for an RVer to understand.
100AH -- AH = Amp Hours is a definition of a battery's capacity.
575 CCA @ 0 F CCA = Cold cranking Amps, or the amps available at 0 degrees to crank a starter for 30 seconds.
730 MCA @ 32 F Marine Cranking Amps or the amps available at 32 degrees to crank a starter for 30 seconds.
RC Min @ 25 Amps 160 Min -- RC = Reserve Capacity. This is the number of minutes a fully charged battery at 80 ° F will discharge 25 amps until the battery drops below 10.5 volts (i.e., fully discharged).
A.H. Cap. 20hr 100 Ah -- A.H. = Amp Hours at the 20-hour rate. There are different rates for different uses. The 20hr rate is typical for comparing deep cycle batteries used in Rvs, trailers, etc. This is the draw from the battery for 20 hours and it will provide a total of 100 amp-hours. Since we never want to discharge the battery below 50%, the first thing we need to do is divide the amp hour rate in half. This battery would actually have 50 amp-hours of realistic use.
This link will give you one source I use and more information if interested...