Quick answer:
The John Deere 9400 battery size is listed as Group 31, 12 V, 925 CCA, 13 × 6.81 × 9.44 in.
Battery sizeGroup 31
Voltage12 V
CCA925 CCA
Case size13 × 6.81 × 9.44 in
John Deere 9400 Battery Specs
| Battery size / group | Group 31 |
|---|---|
| Battery voltage | 12 V |
| Battery CCA | 925 CCA |
| Battery dimensions | 13 × 6.81 × 9.44 in |
Battery Spec Comparisons Chart
CCA comparison
Voltage comparison
Case length comparison
John Deere 9400 Battery FAQ
| Battery voltage | The official battery voltage for the John Deere 9400 tractor is 12 volts. This is standard for most agricultural equipment batteries |
|---|---|
| Battery group size | The official battery group size for the John Deere 9400 tractor is Group 31. This size is commonly used for heavy-duty applications, including tractors |
| Battery CCA | The recommended cold cranking amps (CCA) for the John Deere 9400 tractor battery is 925 CCA. This ensures reliable starting performance in various conditions |
| Battery location | The battery on the John Deere 9400 tractor is located underneath the right access step. You may need to open the flap and possibly remove the access step to access it |
| Battery replacement steps | To replace the battery on a John Deere 9400 tractor, locate the battery underneath the right access step, open the flap, and if necessary, remove the access step by taking out the attaching screws. Make sure to disconnect any light connectors if the tractor has step lighting before removing the step |
| Bad battery symptoms | The most common John Deere 9400 tractor bad battery symptoms include a flashing voltage indicator when the key is on and the engine is stopped, slow cranking of the starter, and batteries that will not charge due to loose or corroded connections or sulfated/worn-out batteries |
Official information note
Mistakes do happen. Please check official deere.com website for official information.







