Hi Bob - I have a 30-3 Sabre 1986 purchased new. I completely rebuilt and upgraded to a battery box with 450 amps hours and separate staring battery many years ago because of wanting refrigeration etc. I purchased 6Volt AGM batteries because they are easier to handle and plates are 30% thicker than 12V batteries and they last 600-800 cycles.? Two placed in series then another two in series are paralleled to make 450 in house bank and separate 120 V 12 volt starting battery on battery isolator illiminator so starting battery is always fully charged an "hot".? 8 AGM 225 6 volt batteries purchased 2013 and replaced again last summer 2024 from Aims Invertor store for about $900.
They are: AIMS AGM6V225AH
Size 13¡± L x? 7¡± W x 9.0¡± H
Have flat screw in bold terminals on top
Float Voltage 13.2-13.8 V
Charge Voltage 14.4 -14.7 V
Max amps charge of 64 amps
Should be good for 600-800m cycles (50% discharge)
Hope this helps.
Earl Nirvana 1986 30-3? West Bend WI on Lake Michigan.
