Quick answer:
The Case IH Magnum 315 tractor battery spec found is 12 V with Group 31 battery sizing.
Voltage12 V
Group size31
Case IH Magnum 315 Battery Size Details
| Replacement battery recommendation | 12 V, Group 31 |
|---|---|
| Battery voltage | 12 V |
| Battery group size | 31 |
Case IH Magnum 315 Extra Battery Notes
| Replacement note | For the Case IH Magnum 315, 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 box on the Case IH Magnum 315 is positioned to the right side of the tractor frame, above the front axle |
| Battery replacement steps | To replace the battery on a Case IH Magnum 315 tractor, first disconnect the negative terminal followed by the positive terminal, then remove any securing brackets and lift the battery out. Finally, place the new battery in, secure it, and reconnect the terminals in the reverse order |
| 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 caseih.com website before ordering a replacement battery.

