Braille 21LB Lightweight AGM Racing Battery w/Mount

$ 267.89 Each
  • Manufacturer Part #: B3121FRP8
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Note:
  • 1,380 pulse cranking amps
  • True deep-cycling ability
  • Heavy-duty vibration resistant power posts
  • Acid-free technology
  • Mount included
Set of 1: $ 267.89

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Weighing in at only 21 pounds, the Braille Lightweight Racing Battery is 10-30 pounds lighter than a stock battery. It improves the performance of many vehicles and is suitable for premium luxury vehicles, extreme audio builds and extreme engine builds with high compression and no alternators, supercharger systems, large cams and underdrive pulleys. Custom car and vintage vehicle owners will appreciate the battery’s acid-free technology, too.

Specs

  • Casing: Polymer plastic
  • Weight: 21 lbs.
  • Length: 6.6"
  • Width: 5.2"
  • Height: 6.8"
  • Pulse Cranking Amps: 1,380
  • Cranking Amps: 742
  • Cold Cranking Amps: 400
  • Amp Hour Rating: 31
  • Warranty: 1-year free replacement

Fiberglass reinforced plastic (FRP) mount included for ease of installation.

All Braille batteries feature an industry leading energy-to-weight ratio accomplished via Enhanced Mat Technology (for more surface area on the lead plates) combined with calcium full frame power path grids (for increased cranking power).

Durability is also built into every Braille battery. Using high-density oxide, Braille batteries offer true deep-cycling ability over the life of the battery. Heavy-duty vibration resistant power posts resist cracking and deterioration common to many lightweight batteries used in harsh automotive environments. The battery is a sealed unit that can be mounted in any position safely using its adjustable automotive terminal posts.

Braille batteries include a one-year free replacement limited warranty that is not pro-rated.

IMPORTANT: Braille batteries can only be shipped to addresses within the United States or Canada.

⚠ Warning Icon WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Ratings Charts & Reviews Braille 21LB Lightweight AGM Racing Battery w/Mount

Consumer Surveys

Would Buy Again? 8.9 - Excellent
Quality 9.1 - Excellent
Product Design 9.4 - Excellent
Performance Benefits 9.0 - Excellent
Ease of Use 9.0 - Excellent

Note: Customer Survey Ratings are 0-10 with 10 being the highest.

  •   Excellent (8.6 - 10)
  •   Good (6.6 - 8.5)
  •   Fair (4.6 - 6.5)
  •   Poor (2.6 - 4.5)
  •   Unacceptable (0 - 2.5)

Consumer Reviews

  • July 10, 2025

    (Verified Purchase)

    5.0 out of 5

    My 3rd Braille 21lbs. Battery. Used for my 2005 Subaru STI...After OEM & Red T.. Batterys. I'm Original owner of the car.

    • Location: BURIEN, WA

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  • June 20, 2025

    (Verified Purchase)

    4.6 out of 5

    Super easy install. Great way to save a fair amount of weight at the heaviest quadrant of the car.

    • Location: VENTURA, CA

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  • July 14, 2023

    (Verified Purchase)

    5.0 out of 5

    Lightweight and powerful battery, I am very happy with Braille battery.
    Highly recommend it to anyone who wants to shed some weight.

    • Location: PUNTA GORDA, FL

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