i31S - Intensity lithium (Extreme Cranking Power) battery
i31S - Intensity lithium (Extreme Cranking Power) batteryi31S - Intensity lithium (Extreme Cranking Power) battery

Due to extremely high demand and large orders of our lithium batteries, production lead time is 3-5 business days.  We are expanding our production capabilities and will get products out as fast as possible.   Thank you for your understanding. 

Braille Intensity I31S battery has max cranking power and in many cases will replace a pair of 80 lbs lead batteries and still have superior cranking power!  


Braille Lithium delivers a higher, cleaner voltage which improves the performance of every electrical component and has shown to provide: quicker starting, improved management & data logging performance, less horsepower draw from the alternator due to efficient charging (5 times faster than lead), will last 3-5 times longer (especially under the harshest environments), much more reliable, all of this on top of the significant weight savings. They also don’t self-discharge, so if the battery is disconnected (no draw or via power disconnect switch), they can sit for over a year and still have over 13 volts to start the vehicle. To get all these benefits in one simple step makes it a very cost effective upgrade!!

NOTE:  All lithium batteries are hand built in Sarasota, Florida and production lead time can be up to 1-3 business days depending on model, time of year, order volume and various factors.  

This battery qualifies for FREE GROUND SHIPPING (does not include expedited shipping) when using the code: FREESHIP at time of checkout. 


   Physical Specs
BCI Group 31 Width  6.77" / 173mm
Weight 23.7lbs / 10.75kg Height  9.25" / 217mm
12.91" / 276mm
Polarity Left Side Positive


   Performance Specs
Voltage 12 Full Voltage Charge  14.2
Cranking Amps (CA) 3100 Amp Hour (AH)   65
Lithium Amp Hour/Lead-Acid Equivalent 195
Life Cycle @ 10% DOD

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