Don't make the mistake of buying based upon price.
A 23 HP Kohler needs lots of CCA to reliably start the engine.
From Kohler:
minimum current rating of 230 cold cranking amps hours should
be sufficient for cranking most electric start engine
models. Actual cold cranking requirement depends on
engine size, application, and starting temperatures.
Cranking requirements increase as temperatures
decrease and battery capacity shrinks. Refer to
equipment's operating instructions for specific battery
requirements
This is a minimum number. a higher number like 350 + will be more reliable for longer ntime.
Put a lower CCA battery in it thinking you save $ and you will waste time boosting it when hot.
If you want a low priced battery, make a frame for a standard car type battery on the front of your tractor.
A tired car battery will do a great job on a garden tractor.
Dave
M7040