Battery size
 

Hello. Still working on the 100. Just about needing a battery for it. I've got an old battery sitting around but it is only putting out 12.23 volts. Is this enough to start this tractor? If not, is there a particular size battery I should purchase?
Thanks
Dave

Is your battery fully charged?
If so, you should be good to go.
If you buy new, the L&G size is correct, just get the biggest CCA available and be sure the terminals are towards the rear as the hold down will short out the + post.
And make sure all connections are bright & tight.

Good Luck!

It ain't the volts,, it is the amps that will start the Cub,,

You gotta charge the battery,, then give it a try,,
if the voltage falls while trying to start,, THEN,, go battery shopping,,,:bigthink:

Charge it and it should read 12.65 after sitting 12 or more hours.
Usually they are shorter lived than a vehicle battery.
4 years is considered good.
I've had some last 7, others didn't make 3 years,
Usually you can get a 300 CCa
near $35.00 @ tractor supply or Family Farm & Home.
A 10 hp isn't all that hard to turn over.

IH Cub Cadet 100s had 2 different style battery boxes. The difference is in the size of the battery box. Somewhere around serial number 89000 (guess) IH went to a smaller battery box. The 100s before 89000 did not have a compression release in the engine. The non compression release engines had a smaller pulley on the starter.

Since i no longer have the battery that was in this, I know it was just a car/truck type battery. So should any car/truck battery work?

No you need a U1 Lawn and Garden battery. Like has been said...get the highest cca they sell. It will cost more but will last much longer.

So, riddle me this...in 1963-64 when this tractor was built were there really lawn and garden batteries? I had always assumed that it was just a car battery. Is there something special about lawn and garden batteries on the way they cycle?
Just trying to learn here!

Look at your battery cable ends, do you think they will clamp on a car/truck battery? Measure the size of your battery box, do you think a car/truck battery will fit?

There were LG batteries when these were new. Nothing special about how they work. Just less cold cranking amps than a car. In other words less capacity.