Braille Batteries are used by racers all over the world in the NASCAR, FIA WRC, FIA Formula Racing, Speed World Challenge Series, SCCA ProRally Series, SCCA Regional and National Racing, NASA Touring Cars, NIRA, NOPI and Battle of the Imports Drag Racing Series. Braille Batteries are also designed for deep-cycle use in premium vehicles with enhanced reliability and performance.

Seeing a need for a Braille Battery that had extended reserve time and amp hour capacity, Braille changed the internal grid structure to suit customers looking for the highest amp hour to weight ratio for an AGM battery. The Spec 147-B3121 is perfect for daily street use, even in colder climates. Braille developed the 147-B3121 to excel at competition use and in situations where the battery is relied on to perform at a higher level than other batteries. This includes extreme audio systems and insane motors.

The 147-B3121 features an industry leading energy to weight ratio. Enhanced Mat Technology (more surface area on the lead plates) combined with calcium full frame power path grids (increase cranking power), yields over 1300 Pulse Cranking Amps. With a weight of only 21 pounds/9.5kg, the B2015 is 10-30 pounds lighter than a standard battery of equal power. It also has a very high reserve time of over 1he 15 minutes to ensure the power to start even after using the vehicles accessories.

Durability was also designed into this battery. Using high density oxide, Braille was able to offer a battery with 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 147-B3121 is a sealed unit that can be mounted in any position safely using its adjustable automotive terminal posts.

PERFORMANCE
Voltage: 12 volts
Full Charge Voltage: 13.8 volts
Short Circuit Current (Max Cranking Amps): 2800 est.
Pulse Cranking Amps (PCA) 5 sec @ 80F: 1168
Pulse Cranking Amps (PCA) 10 sec @ 80F: 1017
Pulse Cranking Amps (PCA) 20 sec @ 80F: 898
Cranking Amps 30 sec @ 80F: 752
Cranking Amps 30 sec @ 32F: 626
Cold Cranking Amps 30 sec @ 0F: 472
Reserve Capacity: 35 minutes
Capacity (C/20 rate): 26 amp hr
Internal Resistance (ohms): 4.5 milliohms (.0045 ohms)
Life Cycle @ 100% DOD: Up to 3100 cycles

PHYSICAL SPECS
Carbon Fiber Heat-Resistant Casing, Horizontal and Vertical Mounting
BCI Group: Usable for all Group Sizes
Length: 8.1"
Width: 3.5"
Height: 6.3"
Minimum Weight (lbs): 18.5 lbs
Post Type: SAE Automotive Posts included & 6 x 1.0mm racing bolts included.
Stainless Stud: Both Automotive SAE Posts and Race Style Bolts are Stainless with a 6 x 1.0mm bolt pitch

Recommended Uses:
Premium Luxury Vehicles
Extreme Audio Builds - Multiple Amps, Subs
Extreme Cold Climates - Daily Driven or Stored Vehicles
Custom Cars and Vintage Vehicles - No Acid to Spill protect and enhance your vehicle!

Customers looking to save the most weight on a small displacement purpose built machine - check out the 147-B106 or 147-B14115 Batteries.