Optima battery Yellow Top series 8071-167 D51

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 SPIRALCELL TECHNOLOGY^®.
Electrolyte:	Sulfuric acid, H₂SO₄
Case:	Polypropylene
Case Color:	Light Gray
Cover Color:	â€œOPTIMAâ€œ 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: (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
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.

Optima battery Red Top series 8020-164 35 R
Battery Model: 35 Part Number: 8020-164 NSN: Number applied for, product currently available UPC Code:

Optima battery Yellow Top series 8014-045 D3478
Battery Model: D34/78 Part Number: 8014-045 NSN: 6140 01 457 4341 UPC Code: 8 11405 00045

Optima battery Red Top series 8003-151 34R
Battery Model: 34R Part Number: 8003-151 NSN: 6140 01 475 9357 UPC Code: 8 11405 00151 2

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

Optima battery Yellow Top series 8040-218 D35
Battery Model: D35 Part Number: 8040-218 NSN: Number applied for, product currently available UPC Code:

Optima battery Blue Top series 8052-161 - D31M
Battery Model: D31M Part Number: 8052-161 NSN: 6140 01 502 4405 UPC Code: 8 11405 00161 1 Performance Data

Optima battery Blue Top series 8016-103 D34M
Battery Model: D34M Part Number: 8016-103 NSN: 6140 01 475 9355 UPC Code: 8 11405 00103 1 Performance Data

Optima battery Red Top series 8078-109 78
Battery Model: 78 Part Number: 8078-109 NSN: Number applied for, product currently available UPC Code:

Optima battery Yellow Top series 8073-167 D51R
Battery Model: D51R Part Number: 8073-167 NSN: Number applied for, product currently available UPC Code:

Optima battery Red Top series 8025-160 25
Battery Model: 25 Part Number: 8025-160 NSN: Number applied for, product currently available UPC Code:

Optima battery Yellow Top series 8071-167 D51

Performance Data

Physical Characteristics

Power

Recommended Charging

Recommended Charging Information