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OPTIMA® YELLOWTOP® D51R 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.
Benefits of the YellowTop
- Deep-cycle and cranking power
- Up to two times longer life
- More than 15 times the vibration resistance
- Completely spillproof, mountable in virtually any position
- Faster recharging
- Optimal starting power
- 300+ discharge/recharge cycles
The OPTIMA® model number for this battery is D51R. If you are replacing an OPTIMA® battery you already have, this model is the same as batteries marked 8073-167, 9073-167, 27952, YEL51R, 256735, SC51RDA, or N9951RYEL.
|Cold Cranking Amps:||
|Open Circuit Voltage (fully charged):||
|Internal Resistance (fully charged):||
||38 Ah (C/20)
||BCI: 66 minutes (25 amp discharge, 80°F (26.7°C), to 10.5 volts cutoff
||High purity lead-tin alloy. Wound cell configuration utilizing proprietary SPIRALCELL TECHNOLOGY®.
||Sulfuric acid, H2SO4
|Automotive, LTV, Car Audio Applications:
||36 Months Free-Replacement
||12 months free replacement
|CCA (BCI 0°F):
|MCA (BCI 32°F):
The following charging methods are recommended to ensure a long battery life:
(Always use a voltage regulated charger with voltage limits set as described below.)
Model: D51 and D51R
These batteries are designed for starting and deep cycling applications and for use in
vehicles with large accessory loads.
Recommended Charging Information
||13.65 to 15.0 volts
||13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate
||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. All limits must be strictly adhered to.
|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.