Braille 21LB Lightweight AGM Battery

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BrailleSKU: B3121 DIY Difficulty: VERY EASY

Universal Mounting Bracket: -
$229.99 $241.49

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At under 22 pounds, the B3121 is our lightest do eveything battery yet.  Using our Advanced AGM racing technology we have put a lot of power into a very small package.  With 1380 pulse cranking amps this has enough power to start more than any other battery in its weight class. This is the perfect model for those who want to shave half the weight of a stanard Group 34 battery and still have enough power to crank over a V8 engine.  Used in everything from large Harley Davidsons to Corvettes & Vipers.

Please note that slight customization may be needed for secure mounting.


  • Weight: 21lbs / 9.5kg
  • Length: 6.6" / 168mm
  • Width: 5.2" / 132mm
  • Height: 6.8" / 173mm
  • Polarity: Right Side Positive
  • Voltage: 12
  • Full Charge Voltage: 13.2
  • Pulse Cranking Amps (PCA): 1380
  • Amp Hour (AH): 31
  • Reserve Capacity (RC): 1 hr 15 mins
  • Life Cycle @ 10% DOD 3100

What's Included:

  • Braille 21LB Lightweight AGM Battery

Vehicle Fitment

Model   + Drivetrain  
Universal Fit Universal

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