| Model | D34/78 |
| Battery Group | 34 |
| Ampere Hours, (AH) | 55 |
| Cold Cranking Amps (CCA) | 750 |
| Reserve Capacity (at 25 Amps) | 120 |
| Voltage | 12 |
| Case Material | Polypropylene |
| Case Color | Light Gray |
| Cover Color | OPTIMA Yellow |
| Length, inches | 10.06 |
| Width, inches | 6.94 |
| Height, inches | 7.88 |
| Weight | 44 |
| Internal Resistance | 0.0028 |