Product Summary

Universal Fit, AGM Battery Type, 6.60" Overall Length

  • Features a no corrosion, no spill, no maintenance AGM design
  • The dual terminal design allows flexible mounting options
  • Use of Heli-coil stainless steel threads allow higher bolt torque for a secure cable connection under extreme vibration
  • It comes fomes fully charged and ready to install
  • Measures 6.6" x 5.2" x 6.8" and has a total of 550 CCA
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Key Specs

MFG. Part #B3121
BrandBraille Battery
Battery TypeAGM
Cranking Amps (32 deg. F)742
Voltage12 volts
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Braille Battery B3121 Details

If you want all the performance advantages of a premium Braille AGM battery without paying extra for a carbon fiber case, the No-Weight series B3121 is the ideal choice. At just 21 pounds, this is the lightest do-everything battery in the lineup. Packed with advanced AGM racing technology in a compact package, it delivers strong cranking power for a wide range of applications — from daily driving to serious racing.

  • No corrosion, no spill, zero-maintenance AGM design for hassle-free reliability
  • Dual terminal design allows flexible mounting in any orientation
  • Heli-coil stainless steel threads support higher bolt torque for secure connections under extreme vibration
  • Comes fully charged and ready to install right out of the box
  • Compact and lightweight: 6.6" x 5.2" x 6.8", only 21 lbs

 

Perfect for racers and performance enthusiasts who need maximum versatility, reliability, and weight savings in a proven AGM battery.

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Specs

  • BCI Group:  Useable for all Group Sizes
  • Length:  6.6"
  • Width:  5.2"
  • Height (without posts):  6.8"
  • Minimum Weight:  21 lbs.
  • Voltage:  12 Volts
  • Full Charge Voltage:  13.8 Volts
  • Pulse Cranking Amps:  1380
  • Cranking Amps:  742
  • Cold Cranking Amps:  550
  • Amp Hour - Electrical Capacity:  31 amp hr
  • Reserve Capacity:  1 hr 15 mins

Braille Battery B3121 Specifications

KEY SPECS
MFG. Part #B3121
BrandBraille Battery
Battery TypeAGM
Cranking Amps (32 deg. F)742
Voltage12 volts
GENERAL
Overall Length6.60"
Overall Width5.50"
Overall Height6.80"
Battery TerminalsTop & Side
Battery UsageStarting
Cranking Amps (0 deg. F)550
Battery Reserve Capacity75 minutes
Weight21.00 lbs.
Sold in QuantityEach

Ratings & Reviews

5

8 Reviews

Overall Assessment

Customers appreciate the battery for its powerful, reliable performance and compact size that allows for flexible mounting. Being a perfect fit for vehicles like a Corvette-powered trike and a 120ci Harley Crate engine demonstrates its versatility. Notably, it provides higher cranking power for large displacement engines, making it superior to stock batteries. The absence of acid leakage boosts its safety and eases user concerns about potential damage. Many confirmed that its practicality and strong performance justify the extra cost, and they would buy it again when needed.

5

8 reviews

5

8

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I would buy again

5.0

a year ago

mewkes

CO

Verified

Great little battery, easy to hide and lots of cranking power

Would Recommend

I would buy this battery again

5.0

2 years ago

Sam

Maine

Verified

Battery was in asphalt late model I bought- direct fit replacement, works good

Would Recommend

i would buy again when needed

5.0

2 years ago

steve

hubbardston,mass.

Verified

mounted on frame under body,for model a build

Would Recommend

I will buy this product again.

5.0

4 years ago

George

Middleburg, Fl

Verified

Used in Corvette powered trike. No problems at all.

Would Recommend

Strong cranking power for large displacement engines

5.0

6 years ago

PurSid

Lincoln Nebraska

Verified

Excellent batter if you need more power. After putting in a 120ci Harley Crate engine the stock battery couldn't keep up with the higher compression. Replaced stock with this direct fit replacement and the engine fires up a lot faster. Well worth the additional cost over a stock battery.

Would Recommend

it does the job every time.

5.0

10 years ago

Don

Annville Pa.

Verified

A good compact power source. Reliable, Price Rite, made life easier for me.

Would Recommend

It fits!

5.0

10 years ago

Mark

Huron South Dakota

Verified

Crimped for space by radius rods the battery let us use the original below seat space with the same power as a larger battery.

Would Recommend

I like the small size and no acid to lea

5.0

12 years ago

saxplayer

Ottawa,ks.

Verified

I like being able to mount in posable place you can think of & not worry it will damage something.

Would Recommend

Showing 8 of 8 reviews

Questions & Answers

7 Questions7 Answers

Will this battery be sufficient in a 602 crate sport mod with a 40amp alternator?

by Jake

9 years ago

1 answer

is this a dry cell type battery ? I want to put it in my 88 corvette rally car in the storage area behind the seat and need a battery that will not put out gases . will my car charging system charge this ?

by Dan

10 years ago

1 answer

I'm thinking about mounting one of these batteries behind the seat in my 41 GMC pickup. Do these batteries generate a lot of heat or otherwise require open ventilation?

by General41

10 years ago

1 answer

What is the estimated "normal" life of this battery"

by Neville

10 years ago

1 answer

can this be charged with a standard battery charger?

by banksy

12 years ago

1 answer

Can this battery be mounted on its side?

by jimfordcoupe

13 years ago

1 answer

Is that battery good for everyday use in a ford flathead?

by Jona

13 years ago

1 answer

7 of 7 questions shown

Customer Impersonation Script