Product Code: ORC_AAAARARR
Availability: In Stock
New Optima D31A heavy duty battery
Nissan patrol landcruiser landrover GQ GU
Battery Model: D31A
Part Number: 8051-160
Nominal Voltage: 12 volts
NSN: 6140 01 502 4973
Description: High power, dual purpose engine start and
deep cycle, sealed lead acid battery
Plate Design: High purity lead-tin alloy. Wound cell configuration utilizing proprietary
Electrolyte: Sulfuric acid, H2SO4
Color: Case: Light Gray
Cover: “OPTIMA” Yellow
Group Size: BCI: 31
237.62 mm (Height at the top of terminals)
Terminal Configuration: SAE / BCI automotive.
Open Circuit Voltage (Fully charged): 13.1 volts
Internal Resistance (Fully charged): .0025 ohms
Capacity: 75 Ah (C/20)
Reserve Capacity: BCI: 155 minutes
(25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off)
CCA (BCI 0°F): 900 amps
MCA (BCI 32°F): 1125 amps
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.)
These batteries are designed for starting and deep cycle applications and for use in vehicles
with large accessory loads.
Recommended Charging Information:
Alternator: 13.65 to 15.0 volts
Battery Charger (Constant Voltage): 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: Maximum voltage 15.6 volts. No current limit as long as battery
(Constant voltage charger) 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 3 amp constant current for 1 hour.
All limits must be strictly adhered to.
Recharge Time: (example assuming 100% discharge – 10.5 volts)
Current Approximate time to 90% charge
Recharge time will vary according to temperature and charger characteristics. When using
Constant Voltage chargers, amperage will taper down as the battery becomes recharged. When
amperage drops below 1 amp, the battery will be close to a full state of charge.
(All charge recommendations assume an average room temperature of 77°F (25°C).
Always wear safety glasses when working with batteries.
Always use a voltage regulated battery charger with limits set to the above ratings. Overcharging
can cause the safety valves to open and battery gases to escape, causing premature end of life.
These gases are flammable! You cannot replace water in sealed batteries that have been
overcharged. Any battery that becomes very hot while charging should be disconnected
Not fully charging a battery can result in poor performance and a reduction in capacity.
Shipping and Transportation Information:
OPTIMA 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 Special Provision A-48 and A-67 for UN2800.
Terminals must be protected from short circuit.
Enertec Exports S. de R.L. de C.V.
Avenida. del Parque No. 2155
Monterrey Technology Park
Cienega de Flores, N.L. 65550
Phone: 52 (81) 81542300
Fax: 52 (81) 81542301
BCI = Battery Council International