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.
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.
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.
Shipping and Transportation Information
OP TIMA batteries can be shipped by AIR . The battery is nonspillable and is tested according to ICAO Technical Instructions DOC . 9284-AN/905 to meet the requirements of Packing Instructions No. 806 and is classified as non-regulated by IATA S pecial Provision A-48 and A-67 for UN2800. Terminals must be protected from short circuit.