The model 31922 Surepower dual battery isolator is a heavy duty type rated at 240 amps. This is a Schottky type isolator, which means that you have no voltage drop through the rectifiers. This is the unit for those of you with high output needs.

12 volts, 45 Amps, Delco 10SI

3003 Input Voltage: 6-50VDC, Peak Output: 300 amps,

9523A Battery Isolator for Delco CS & CS-D Series Alternators

12V Grounded Intermittent Duty SPST

12 volts, 185 Amps, Leece Neville 4800/4900

20023A- ISO-200A-1INP-2BAT-CS,

Number of Conductors: 7, Gauge of Largest Conductors: 8, Not Weather Sealed, Notes: Die Cast Metal Housing, Self Adjusting Spring Grip Contacts, Replacable Interior, Plated Steel Spring Cable Protector

12 volt Converter 10 amp 12 to 24 volt DBLR