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LFX36A3-BS12 Shorai 12v 36 AH PBEq LiFePO4 Power Sports Battery [+ -]

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In order to ship IATA imposed new Shipping Regulations regarding Lithium Batteries. Lithium Batteries being shipped are only charged to 30% of capacity. When you receive this battery it may need to be charged. This is the battery charger we recommend for this battery: Shorai 6v/12v 2 Amp LFX Series Lithium Battery Charger Sho-BMS01

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Product InformationStore Part Number: LFX36A3-BS12


Replaces: HYTX16BH, YTX20H

The Lithium Iron Phosphate battery is the ultimate in weight versus power technology. This battery weighs in at only 4.96 pounds and offers an incredible 540 C.C.A. This is a drop in replacement for your Lead-acid battery, and will require no change to your stock charging system.

Shorai LFX batteries contain Shorai-proprietary eXtreme-Rate Lithium Iron prismatic cells (chemistry LiFePO4). They contain no poisonous lead, no acid, and do not create gasses during charge, as traditional Lead-Acid batteries do. Compared to lead-acid, Lithium Iron Phosphate batteries are also extremely light, have much lower self-discharge, do not sulfate, and are environmentally friendly.

When it comes to Powersports applications and lithium batteries, recommends that you use the best, most powerful version that will properly fit your application. Shorai may list several battery sizes in their application chart that will fit your bike, but in our opinion the small gains in weight are typically offset by the superior starting power offered in the upgraded versions. Should you not require the most powerful version, see the LFX27A3-BS12 for the less potent lithium alternative for this battery. It will be the exact same dimensions and terminal location as our recommended battery, but with a bit less capacity.

Lead acid batteries have long been a target with riders who want to take weight off of their motorcycle. With our Lithium Iron Phosphate batteries, it is now possible to do away with the heavier lead acid battery, while maintaining reliable starting power. These are true drop in replacement batteries that will require no charging system modifications, and only weigh a fraction of the OEM battery.

*BatteryStuff understands the importance of getting a replacement battery right away and usually ships all batteries the same day as ordered if received before 1:30pm (Pacific).


  • No more dead batteries. Holds charge for one year without maintenance
  • Ultra light. One fifth the weight of lead-acid batteries on average
  • Twice to four times the service life of lead-acid batteries
  • Drop-in replacement for your OEM battery
  • Military spec Carbon Fiber Composite Case
  • Faster cranking for better starts
  • Super-fast recharge rate
  • No explosive gasses during charge, no lead, no acid
  • Environmentally friendly
  • Japanese engineering and components


We recommend using these batteries in temperatures above 0 degrees Celsius. This battery may require spacers to make it work in your application. Included with this battery are foam spacers that will aid in fitting this battery. ** PbEq equals Lead-Acid Equivalent. This means that a 36 AH PbEq Lithium Iron Phosphate battery will perform the same as a 36 amp hour Lead-acid battery.

Recommended Charger

Shorai Charger Sho-BMS01
The Sho-BMS01 is a Charge/Store dedicated battery managment system that is designed specifically for Shorai batteries.

Works In

Vehicles that LFX36A3-BS12 works in

Arctic Cat 1000cc Mudpro 1000H1(2010-2011)
Arctic Cat 1000cc Mudpro 1000H2, TRV, 1000i GT, XT(2012-2013)
Arctic Cat 1000cc Mudpro1000H2, TRV, 1000i GT, XT(2014-2017)
Arctic Cat 1000cc Thundercat(2007-2010)
Arctic Cat 450cc 450, TRV, CORE(2011-2016)
Arctic Cat 450cc XC450, TRV, CORE2017
Cagiva 750cc Elefant(1993-1999)
Harley Davidson 1000cc XL, XLH (Sportster Electric Start)(1967-1978)
Harley Davidson 1000cc XL, XLH Series (Sportster)(1979-1985)
Harley Davidson 1000cc XLCR Cafe Racer(1977-1978)
Harley Davidson 1000cc XLX-61, XR1000(1983-1985)
Harley Davidson 1200cc FL, FLH Series (Touring)(1965-1977)
Harley Davidson 1200cc FX Series (Electric Start)(1971-1978)
Harley Davidson 1340cc FL, FLH Series (Shovelhead Engine) (Touring)(1978-1984)
Harley Davidson 1340cc FX, FXR Series(1979-1994)
Harley Davidson 1340cc FXR Series(1999-2000)
Harley Davidson 1340cc FXST, FLST Series (Softail)(1984-1990)
Honda 1000cc Talon(2019-2021)
Indian 1422cc All Models2001
Indian 1442cc All Models(1999-2000)
Indian 1442cc Scout, Spirit(2002-2003)
Indian 1720cc Chief(2009-2011)
Moto Guzzi 1380cc California(2013-2017)
Moto Guzzi 1380cc MGX-21 Flying Fortress2016
Moto Guzzi 1400cc AUDACE(2016-2018)
S.O.S. Marine Mfg. All ModelsAll Years
Shorai Large Case Batteries
Wet Jet International All ModelsAll Years

Tech Specs

  • Dimensions (LxWxH): 6.55 x 3.39 x 6.10 in
  • Part Number: LFX36A3-BS12
  • Weight: 4.96 lb
  • Shipping Weight: 5.0 lb
  • DC Output Voltage: 12V
  • Model: LFX36A3-BS12
  • Manufacturer: Shorai
  • Battery Polarity: +-
  • Warranty: 3 Year Manufacturer
  • Recommended Use: Heavy Duty Powersports
  • Amp/Hr: 36 PbEq
  • C.C.A.: 540
  • Manufacturer Part #: LFX36A3-BS12
  • UPC: 4897034420388
  • Made In: China

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Reviews and Ratings

5.00 Average
5 Stars 2
4 Stars 0
3 Stars 0
2 Stars 0
1 Stars 0
Rated 5.00/5 Stars from 2 customer reviews.

Do you own the LFX36A3-BS12? Please, tell us what you think about it. It helps us provide you with better products. Please note that it may take up to 72 hours for your review to appear.

Shorai Lithium 36 AH PBEq 12 Volt LiFePO4
Pros: I'm elated! I hike into a swamp over a mile to hunt. Traveling light is essential. When it's below freezing I wear a heated jacket liner to stay warm on an all day hunt. Lead acid batteries are too heavy in the 36 ah range. The manufacturer of the jacket liner only sells lithium batteries up to 8 ah. These don't last long enough and cost $24 per ah. Your 36 ah lasts all day at only a couple pounds more and the cost is less $9 per ah. Glad I found you!
Cons: Wish you were within driving distance but then USPS delivery was very speedy.
Is this review helpful?
Written by on Nov 11, 2011. Ownership: Just Bought. Knowledge Level: Electricity doesn't scare me.. usually — (92 of 178 customers found this review helpful
Cranking power.
Pros: This is my second Shorai battery so I had great hopes when I ordered this one for my 1992 Harley Davidson FLHS. I'm happy so far. I was amazed at the cranking speed as soon as I installed it on a cold day. Took the bike for a little ride and parked it for a couple of days. The real test was when I looked out in the morning and it was 31*F. This bike has 20/50 oil in it's innards and would never start since new without a charger hooked on in this weather. I went by the book. Turned on the key, cranked the engine over a couple of times, waited about 2 minutes and then was surprised, it spun fast and started right up. AMAZING! After riding quite a bit and getting fully charged this battery really spins the engine over faster than any other battery I had used before including expensive Harley batteries.
Cons: Little pricey. Hopefully the expected long life will even out the extra coast.
The first battery charred the edge of my credit card, this one melted one end. Actually money well spent just for the satisfaction of having my motorcycles start without having to boost them on cold days and having a lot of reserve power when I accidently leave the lights on for a while.
Is this review helpful?
Written by on May 21, 2012. Ownership: Use regularly. Knowledge Level: Genius is my way of life — (90 of 170 customers found this review helpful

See More Reviews

Manuals & Tutorials

Installation Guide

User Manual

Shorai Abuse Test

Lithium Battery Overview

Lithium Iron FAQ

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