Quick answer:
The Kubota M108S tractor battery specs found are Group 31, 12 V, 900 CCA, 13 × 6.81 × 9.44 in.
Battery sizeGroup 31
Voltage12 V
CCA900 CCA
Case size13 × 6.81 × 9.44 in
Kubota M108S Battery Specs
| Battery size / group | Group 31 |
|---|---|
| Battery voltage | 12 V |
| Battery CCA | 900 CCA |
| Battery dimensions | 13 × 6.81 × 9.44 in |
| Battery location | The battery on the Kubota M108S tractor is located under the seat. |
Battery Spec Benchmarks
CCA benchmark
Voltage benchmark
Case length benchmark
Benchmarks are general reference ranges for utility tractor batteries.
Kubota M108S Battery FAQ
| Replacement battery recommendation | For the Kubota M108S tractor, use a battery that matches 12 V, Group 31, 900 CCA or higher, case size around 13 × 6.81 × 9.44 in. Also match the terminal layout, hold-down style and battery tray clearance before buying. |
|---|---|
| Battery voltage found | The battery voltage found for the Kubota M108S tractor is 12 V. |
| Battery group size found | The battery group size found for the Kubota M108S tractor is Group 31. |
| Battery CCA found | The battery CCA figure found for the Kubota M108S tractor is 900 CCA. |
| Battery location | The battery on the Kubota M108S tractor is located under the seat. |
| Battery replacement steps | When swapping the Kubota M108S battery, match the replacement to 13 × 6.81 × 9.44 in and keep the same terminal layout. Shut the tractor down fully, remove negative first and positive second. After the new battery is seated and clamped, connect the positive cable first, followed by the negative cable. |
| Bad battery symptoms | For the Kubota M108S, a battery below the needed 900 CCA can show up as slow starter speed, random no-start issues, weak lights or repeated jump-starts. |
Official information note
Mistakes do happen. Check the operator manual, service manual and official kubotausa.com website for official battery specifications before buying parts.

