| Battery | Standard voltage | 12.6 to 12.8 V at 20°C (68°F) |
| Fuse | Standard resistance | Below 1 Ω |
| Charging circuit without load | Standard amperage | 14 A or higher |
| Standard voltage | 12 to 15.3 V | |
| Charging circuit with load | Standard amperage | 40 A or higher |
| Brush length | Standard exposed brush length | 9.5 to 11.5 mm (0.374 to 0.453 in.) |
| Minimum exposed brush length | 4.5 mm (0.177 in.) |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Slip ring - Slip ring | Approx. 20°C (68°F) | 1.8 to 2.2 Ω |
| Slip ring - Rotor | Always | 10 MΩ or higher |
| Slip ring diameter | Standard diameter | 14.2 to 14.8 mm (0.559 to 0.583 in.) |
| Minimum diameter | 14.0 mm (0.551 in.) |