| Model | D51R |
| Battery Group | 51 |
| Ampere Hours, (AH) | 38 |
| Cold Cranking Amps (CCA) | 450 |
| Reserve Capacity (at 25 Amps) | 66 |
| Voltage | 12 |
| Case Material | Polypropylene |
| Case Color | Light Gray |
| Cover Color | OPTIMA Yellow |
| Length, inches | 9.31 |
| Width, inches | 5.06 |
| Height, inches | 8.94 |
| Weight | 26 |
| Internal Resistance | 0.0046 |