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OPTIMA D31A

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Model No OPTIMA D31A
Description Optima D31A Yellow Top Deep-cycle/Starting Battery
AGM
Colour Yellow & Grey
Length(mm) 329
Width(mm) 171
Height(mm) 238
Weight(kg) 27.3
Product Rating Batteries Direct 5 Stars Rating - The best quality product of its type with a proven reliability and excellent warranty support
Brand Optima
Comments
Optima Yellow Top Deep-cycle/Starting Battery
 
Model Voltage

CCA (Amps)

Ah (@ C20)
RC (in mins)
Weight (kg)
Terminals
Dimensions** (L x W x H)(mm)
D51R-T1
12
450
38
66
11.8
- JIS small +
238x129x229
D51R-T2
12
450
38
66
11.8 - SAE +
238x129x229 
D51-T1
12
450
38 66
11.8
+ JIS small -
238x129x229 
D51-T2
12
450
38
66
11.8
+ SAE -
238x129x229 
D75/25
12
650
48
98
16
+ SAE -
238x173x199
D35
12
650
48
98
16.6
- SAE +
238x173x199 
D34
12
750
55
120
19.6
+ SAE -
254x171x199
D34/78
12
750
55
120
19.9
+ SAE - 254x173x199
D27F
12
830
66
140
24.4
- SAE +
309x173x222
D31A
12
900
75
155
27.3
Centre SAE
329x171x238
D31T
12
900
75
155
27.3
Centre stud
329x171x238
 *Specifications may change without notice **Dimensions are overall maximum and include all handles

OPTIMA® YELLOWTOP® D31A 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 D31A. If you are replacing an OPTIMA® battery you already have, this model is the same as batteries marked 8051-160, 9051-160, 27994, D31A-1125, YEL31A, SC31DA, or N9931AYEL.

Warranty: 3 years private use, all OPTIMA® have their warranty details on the top label and are honoured by the warranty stated on that label.  

Battery Model: D31A
Part Number: 8051-160
NSN: 6140 01 502 4973
UPC Code: 8 11405 00051 5

Performance Data

Cold Cranking Amps: 900
Cranking Amps: 1125
Nominal Voltage: 12 volts
Open Circuit Voltage (fully charged): 13.1 volts
Internal Resistance (fully charged): 0.0025 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)

Physical Characteristics

Plate Design:

High purity lead-tin alloy.  Wound cell configuration utilizing proprietary SPIRALCELL TECHNOLOGY®.

Electrolyte:

Sulfuric acid, H2SO4

Case: Polypropylene
Case Color: Light Gray
Cover Color: “OPTIMA“ Yellow
Group Size: BCI: 31
Post Type: SAE Post
Weight: 27.3 KG
Length: 329 mm
Width: 171 mm
Height: 238 mm

Power

CCA (BCI 0°F): 900 amps
MCA (BCI 32°F): 1125 amps

Recommended Charging

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: D31A
These batteries are designed for starting and deep cycling applications and for use in vehicles with large accessory loads.


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.
All limits must be strictly adhered to.

  • 1991-1995Alfa Romeo164V6 3.0L
  • 1968-1968CheckerMarathonL6 3.8L
  • 1969-1979CheckerMarathonL6 4.1L
  • 1980-1980CheckerMarathonV6 3.8L
  • 1980-1980CheckerMarathonV8 4.4L
  • 1968-1968CheckerMarathonV8 5.0L
  • 1978-1978CheckerMarathonV8 5.0L
  • 1980-1980CheckerMarathonV8 5.0L
  • 1968-1969CheckerMarathonV8 5.4L
  • 1969-1978CheckerMarathonV8 5.7L
  • 1989-1994HinoFAL4 3.8L
  • 1987-1994HinoFBL4 3.8L
  • 1986-1987HinoFDL6 6.0L
  • 1992-1994HinoFDL6 6.5L
  • 1988-1991HinoFDL6 6.7L
  • 1986-1987HinoFEL6 6.0L
  • 1985-1985HinoFEL6 6.5L
  • 1987-1994HinoFEL6 6.5L
  • 1984-1991HinoFEL6 6.7L
  • 1987-1988HinoFFL6 5.9L
  • 1985-1994HinoFFL6 6.5L
  • 1984-1991HinoFFL6 6.7L
  • 1985-1985HinoFGL6 6.5L
  • 1984-1985HinoFGL6 9.6L
  • 1992-1992HinoGCL6 6.5L
  • 1990-1991HinoGCL6 6.7L
  • 1988-1991HinoSFL6 6.7L
  • 1986-1994HinoSGL6 6.5L
  • 1986-1986HinoSGL6 9.6L
  • 1968-1968LincolnContinentalV8 7.0L
  • 1968-1970LincolnContinentalV8 7.5L
  • 1966-1968LincolnContinentalV8 7.6L
Authorised Optima Batteries Distributor
Warranty Info OPTIMA D31A1410227381_1.pdf 
 



Optima D31A Yellow Top Battery 8051-160 9051-160 27994 D31A-1125 YEL31A SC31DA N9931AYEL

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