When you are shopping for a battery there are 3 different cranking amps the battery companies use. CCA= cold cranking amps this is a rating for 0-degrees, CA = cranking amps this is a rating for 32-degrees and HCA is a rating for 80 degrees. What you will want to compare is the cold cranking amps (cca) of batteries. The other 2 ratings can be deceiving as they are for warmer temperatures.
Battery Sizes
Always try to find the biggest physical size battery that will fit your holder and try to compare how many plates are in the batteries (more plates = more cca)
8 Volt Batteries
Usually purchasing an 8-volt battery is not advisable unless your charging system is very good, it takes a good generator, regulator or cutout system to keep an 8-volt battery fully charged. Usually poeple look at changing to an 8-volt because their tractor is hard to start, this goes back to having a good charging system so the battery can crank the engine fast enough.
JR
H. Lewis says
1947 JD B (ser#212517) has already been converted to 12 volts. Need suggested battery dimension information (group?) so battery I buy will be a “best fit” for the battery box. Tractor had no battery in it when I purchased it some weeks ago.
Thank you tremendously!
Lewis
Chris says
Looking to put in a battery for a Oliver 77 row crop diesel? What type do I need and I think it takes 2 battery’s ? It is a 12 volt system with a generator