Quick answer:
The New Holland 3930 tractor battery spec found is 12 V with Group 31 battery sizing.
Voltage12 V
Group size31
New Holland 3930 Battery Size Details
| Replacement battery recommendation | 12 V – Group 31 |
|---|---|
| Battery voltage | 12 V |
| Battery group size | 31 |
New Holland 3930 Extra Battery Notes
| Replacement note | For the New Holland 3930, match the replacement battery to the captured spec: 12 V, Group 31. Physical fit, terminal layout and hold-down fit still matter |
|---|---|
| Battery location | The battery on the New Holland 3930 tractor is typically located under the seat or in a compartment near the rear of the tractor. Always refer to the operator’s manual for specific details regarding your model |
| Battery replacement steps | To replace the battery on a New Holland 3930 tractor, first disconnect the negative cable from the battery, followed by the positive cable. Then, remove the old battery and install the new one by connecting the positive cable first, then the negative cable |
| Safe removal note | Disconnect the negative cable first, then disconnect the positive cable. Install the new battery, connect the positive cable first, then reconnect the negative cable last. That reduces the chance of shorting a tool against the frame |
Official information note
Mistakes do happen. Battery specs can change by year, engine, market, terminal layout and installed options. Check the old battery label, operator manual, parts book and official newholland.com website before ordering a replacement battery.





