OPTIMA® Batteries 8004-003 34/78 REDTOP® Starting Battery

OPTIMA® Batteries 8004-003 34/78 REDTOP® Starting Battery

Regular price $48.50 USD
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OPTIMA® REDTOP® 34/78 Ultra high-performance SPIRALCELL TECHNOLOGY® AGM (absorbent glass mat) battery with reliable cranking power for your auto . car or truck and twice the life. The OPTIMA® REDTOP® will outperform and outlast traditional batteries in demanding cranking/starting applications. The ultimate high-CCA starting battery for vehicles that have alternators capable of keeping up with all electrical loads.

If you have demanding electrical accessory loads such as winches . audio systems . and other devices . take a look at the YELLOWTOP® product line.

The OPTIMA® model number for this battery is 34/78. If you are replacing an OPTIMA® battery you already have . this model is the same as batteries marked 8004-003 . 9004-003 . 27990 . 34-78 . 34/78-980 . RED34/78 . SC34U . or N9934/78RED.


  • Strongest five-second starting burst
  • Up to two times longer life
  • More than 15 times the vibration resistance
  • Completely spillproof . mountable in virtually any position
  • Maintenance-free
  • Faster recharging
  • Optimal starting power
Battery Model: 34/78
Part Number: 8004-003
NSN: 6140 01 457 4339
UPC Code: 8 11405 00003 4

Performance Data

Cold Cranking Amps: 800
Cranking Amps: 1000
Nominal Voltage: 12 volts
Open Circuit Voltage (fully charged): 12.8 volts
Internal Resistance (fully charged): 0.0030 ohms
Capacity: 50 Ah (C/20)
Reserve Capacity: BCI: 100 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


Sulfuric acid . H2SO4

Case: Polypropylene
Case Color: Dark Gray
Cover Color: “OPTIMA“ Red
Group Size: BC I: 34/78
Post Type: Dual SAE/GM
Weight: 38.8 lb
Length: 10.06 in
Width: 6.94 in
Height: 7.88 in


CCA (BCI 0°F): 800 amps
MCA (BCI 32°F): 1000 amps

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