Specs
OPTIMA® YELLOWTOP® D51 Ultra high-performance SPIRALCELL TECHNOLOGY® AGM (absorbent glass mat) dual-purpose deep-cycle and starting battery. OPTIMA® YELLOWTOP® batteries have three times the cycling capability (rechargeability) with ultimate cranking power for your auto, car or truck to outperform traditional batteries. Perfect for powering heavy electrical loads, including winches, audio systems, inverters, and other demanding vehicle accessories and electronics. Lower internal resistance provides more efficient power output and faster recharges.
The OPTIMA® model number for this battery is D51. If you are replacing an OPTIMA® battery you already have, this model is the same as batteries marked 8071-167, 9071-167, 27951, YEL51, SC51DA, or N99D51YEL.
| Battery Model: | D51 |
| Part Number: | 8071-167 |
| NSN: | 6140-01-523-6288 |
| UPC Code: | 8 11405 00007 2 |
Performance Data |
|
| Cold Cranking Amps: | 450 |
| Cranking Amps: | 575 |
| Nominal Voltage: | 12 volts |
| Open Circuit Voltage (fully charged): | 13.1 volts |
| Internal Resistance (fully charged): | 0.0046 ohms |
| Capacity: | 38 Ah (C/20) |
| Reserve Capacity: | BCI: 66 minutes (25 amp discharge, 80°F (26.7°C ), to 10.5 volts cutoff) |
Physical Characteristics |
|
| Plate Design: |
High purity lead-tin alloy. Wound cell configuration utilizing proprietary |
| Electrolyte: |
Sulfuric acid, H2SO4 |
| Case: | Polypropylene |
| Case Color: | Light Gray |
| Cover Color: | “OPTIMA“ Yellow |
| Group Size: | BCI: 51 |
| Post Type: | SAE Post |
| Weight: | 26 lb |
| Length: | 9.31 in |
| Width: | 5.06 in |
| Height: | 8.94 in |
Power |
|
| CCA (BCI 0°F): | 450 amps |
| MCA (BCI 32°F): | 575 amps |
Recommended Charging |
|
|
The following charging methods are recommended to ensure a long battery life: Model: D51 and D51R |
Recommended Charging Information |
|
| Alternator: | 13.65 to 15.0 volts |
| Battery Charger: | 13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate |
| Float Charge: | 13.2 to 13.8 volts; 1 amp maximum (indefinite time at lower voltages) |
| Rapid Recharge (Constant voltage charger): | Maximum voltage 15.6 volts. No current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below 1 amp. |
| Cyclic or Series String Applications:: |
14.7 volts. No current limit as long as battery temperature remains below 125°F (51.7°C). When current falls below 1 amp, finish with 2 amp constant current for 1 hour. |
