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LFX21A6-BS12 Shorai 12v 21 AH PBEq LiFePO4 Power Sports Battery [+ -]

zoom photos LFX21A6-BS12 Shorai 12v 21 AH PBEq LiFePO4 Power Sports Battery [+ -]
LFX21A6-BS12 Shorai 12v 21 AH PBEq LiFePO4 Power Sports Battery [+ -]
LFX21A6-BS12 Shorai 12v 21 AH PBEq LiFePO4 Power Sports Battery [+ -]
LFX21A6-BS12 Shorai 12v 21 AH PBEq LiFePO4 Power Sports Battery [+ -]
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LFX21A6-BS12 Shorai 12v 21 AH PBEq LiFePO4 Power Sports Battery [+ -]

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  • Super-fast recharge rate
  • Environmentally friendly
  • Part Number: LFX21A6-BS12

icon Important Notice

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


The Lithium Iron Phosphate battery is the ultimate in weight versus power technology. This battery weighs in at only 3.03 pounds and offers an incredible 315 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.

This is the heavy duty LFX21A6-BS12 battery. It offers an incredible 315 C.C.A., and the Lead-Acid Equivalent of 21 amp hours. It weighs in at only 3.03 pounds and yet still has the power to spin over even the most stubborn engines. Not only does this battery offer incredible advantaged over the lead-acid battery in weight, but also in physical size. This battery will effectively take the place of a YTX20CH in power, but it is not larger than a YTX16 battery.

We recommend using this battery in your regular commuters, your frequent play vehicles, and anything that may require that extra punch to start.

*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).

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 21 AH PbEq Lithium Iron Phosphate battery will perform the same as a 21 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.


  • 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

This Product Replaces These Other Products


Works In

Vehicles that LFX21A6-BS12 works in
Aprilia 1000cc ETV Caponord(2001-2007)
Aprilia 1000cc SL1000 Falco(2000-2003)
Aprilia 1200cc Dorsoduro, Caponord(2011-2020)
Aprilia 750cc Dorsoduro(2009-2016)
Aprilia 850cc Mana 850(2007-2009)
Aprilia 850cc Mana 850, GT(2010-2020)
Aprilia 850cc SRV850(2012-2013)
BMW 1170cc R nine T, Racer, Urban(2016-2020)
BMW 1170cc R nine T, Scrambler(2013-2015)
BMW 1170cc R nine T, Scrambler, Pure(2016-2020)
BMW 1170cc R nineT, Scrambler, Pure2017
BMW 1170cc R1200ST(2005-2007)
BMW 1200cc HP2 Sport, Megamoto(2007-2012)
BMW 1200cc K1200R, S(2005-2009)
BMW 1200cc R1200GS(2005-2012)
BMW 1200cc R1200RS(2014-2019)
BMW 1200cc R1200RT(2014-2020)
BMW 1200cc R1200S, R(2005-2017)
BMW 1250cc RS1250GS(2019-2020)
BMW 1300cc K1300R, S(2009-2016)
BMW 1600cc K1600 Bagger(2017-2020)
BMW 650cc F650GS(2007-2013)
BMW 700cc F700GS(2011-2020)
BMW 800cc F650GS(2008-2012)
BMW 800cc F800ST, GS, GT, R(2006-2014)
BMW 800cc F800ST, GS, GT, R, ADV(2015-2020)
Buell 1200cc S1 Lightning(1996-1999)
Buell 1200cc XB12R Firebolt(2004-2010)
Buell 1200cc XB12SS, SCG, Lightning(2004-2010)
Buell 1200cc XB12X, XT Ulysses(2006-2010)
Buell 500cc Blast(2000-2009)
Buell 984cc XB9R Firebolt, XB9S Lightning(2002-2007)
Buell 984cc XB9R Firebolt, XB9SX Lightning(2008-2010)
Cagiva 900cc Elefant E900(1992-1999)
Ducati 906cc Paso(1990-1992)
Ducati 907cc IE Paso(1990-1994)
Harley Davidson 1130cc VRSC V-Rod(2002-2007)
Harley Davidson 1250cc VRSC V-Rod2006
Honda 1000cc Pioneer 1000(2016-2021)
Honda 1000cc VF1000R, F(1984-1986)
Honda 1000cc XL1000V Varadero(2010-2012)
Honda 1100cc ST1100, ABS-TCS, 1100A(1991-2002)
Honda 1100cc VT1100C, C3, T Shadow (Spirit, Aero, ACE Tourer)(2001-2007)
Honda 1100cc VT1100C2 Shadow Sabre(2000-2007)
Honda 1300cc VTX1300C, R, S Retro(2003-2012)
Honda 1500cc GL1500 Valkyrie(1997-2003)
Honda 300cc TRX FW FourTrax 300 4x4(1988-2000)
Honda 300cc TRX300 FourTrax(1988-2000)
Honda 350cc TRX D FourTrax 4x4(1986-1989)
Honda 350cc TRX Rancher(2000-2006)
Honda 400cc FL400R Pilot(1989-1990)
Honda 400cc TRX Rancher AT(2004-2006)
Honda 400cc TRX400 FW Foreman(1995-2003)
Honda 420cc TRX420 Fourtrax Rancher 2x4(2014-2021)
Honda 420cc TRX420 Fourtrax Rancher 4x4(2011-2021)
Honda 420cc TRX420 Rancher 4x4(2008-2009)
Honda 450cc TRX FourTrax Foreman S, ES(1998-2004)
Honda 500cc Pioneer 500(2015-2020)
Honda 500cc TRX500 FE, FM, TM FourTrax Forman ES, 4x4(2005-2012)
Honda 500cc TRX500FA(2015-2019)
Honda 500cc TRX500FA, FourTrax Rubicon(2001-2011)
Honda 500cc TRX500FA, FourTrax Rubicon(2012-2014)
Honda 500cc TRX500FE, FPE, FM, FPM(2011-2019)
Honda 520cc TRX520(2020-2021)
Honda 650cc FourTrax Rincon TRX(2003-2005)
Honda 700cc MUV700 Big Red(2008-2013)
Honda 700cc Pioneer 700(2014-2020)
Honda 750cc VT750C, CA Shadow(1998-2003)
Honda 750cc VT750CD, CD2 Shadow Deluxe(1998-2003)
Honda 750cc VT750CDA, B, C, D Shadow ACE Deluxe(2002-2003)
Husqvarna 400cc TE410E(2000-2001)
Husqvarna 580cc TE610(1996-1999)
Husqvarna 580cc TE610E, SM610S(2000-2010)
Husqvarna 630cc SMR630, TE630(2010-2016)
Husqvarna 650cc TR650 Terra, Strada(2012-2016)
Husqvarna 900cc NUDA 900(2012-2016)
Hyosung 250cc GT250, R(2009-2016)
Hyosung 650cc GT650, R, S(2009-2016)
KTM 1290cc Super Duke R(2014-2019)
Kawasaki 1100cc ZR1100(1992-1995)
Kawasaki 1100cc ZRX1100(1999-2000)
Kawasaki 1100cc ZX1100-D Ninja ZX-11(1995-2001)
Kawasaki 1100cc ZX1100-D Ninja ZX-11 (CN)(1993-1994)
Kawasaki 1100cc ZX1100-E (GPz1100), ABS(1995-1997)
Kawasaki 1200cc Ninja ZX-12R(2000-2005)
Kawasaki 1200cc ZRX1200R(2001-2005)
Kawasaki 1200cc ZZR1200(2002-2005)
Kawasaki 1400cc Ninja ZX-14, R, ABS(2006-2020)
Kawasaki 1400cc ZG1400 Concours, ABS(2008-2020)
Kawasaki 1500cc VN1500-D, E, N Vulcan Classic(1996-2009)
Kawasaki 1500cc VN1500-G, J, L, R Vulcan Nomad, Drifter(1999-2005)
Kawasaki 1500cc VN1500-P Vulcan Mean Streak(2002-2003)
Kawasaki 1600cc VN1600-A Vulcan Classic, D, Nomad(2003-2009)
Kawasaki 1600cc VN1600-B Vulcan Mean Streak(2004-2009)
Kawasaki 1700cc VN1700 Voyager, Nomad, Vaquero(2009-2020)
Kawasaki 2000cc VN2000-A Vulcan(2004-2012)
Kawasaki 400cc KVF400-C Prairie 400 4x4 (CN)(1999-2002)
Kawasaki 400cc KVF400-D Prairie 400, 4x4 (CN)(1999-2001)
Kawasaki 650cc 4x4 Advantage Classic(2002-2003)
Kawasaki 650cc KVF650 Brute Force(2002-2013)
Kawasaki 650cc KVF650-A,B,D,E Prairie 650 4x42005
Kawasaki 650cc W650(2000-2002)
Kawasaki 700cc KFX700(2003-2012)
Kawasaki 700cc KFX700 V-Force(2003-2004)
Kawasaki 700cc KSF700-A,B (KFX700)(2004-2008)
Kawasaki 700cc KVF650-A,B,D,E Prairie 650 4x4(2002-2008)
Kawasaki 700cc KVF700-A,B,D Prairie 700, 4x4(2004-2006)
Kawasaki 750cc KVF750 Brute Force(2005-2020)
Kawasaki 800cc VN800-A, B, C, E Vulcan, Classic, Drifter(1995-2003)
Kymco 500cc Xciting 500i(2009-2016)
Moto Guzzi 1100cc California, Special, Jackal, Breva, Griso(2005-2013)
Moto Guzzi 1200cc 1200 Sport2009
Moto Guzzi 1200cc Breva 1200(2009-2010)
Moto Guzzi 1200cc GRISO V8(2009-2017)
Moto Guzzi 1200cc Norge(2009-2016)
Moto Guzzi 1200cc Sport 1200(2010-2013)
Moto Guzzi 1200cc Sport, ABS(2009-2010)
Moto Guzzi 1200cc Stelvio(2008-2017)
Moto Guzzi 1380cc Eldorado2016
Moto Guzzi 650cc NTXNot Listed
Moto Guzzi 650cc V65 FloridaNot Listed
Moto Guzzi 750cc NTXNot Listed
Moto Guzzi 750cc NevadaNot Listed
Moto Guzzi 750cc StradaNot Listed
Moto Guzzi 750cc V7 III Carbon Shine, Dark, Milano, Rough2018
Moto Guzzi 750cc V7, Racer, Scrambler(2013-2016)
Moto Guzzi 750cc V7, Racer, Scrambler, Stone, Special2017
Moto Guzzi 750cc V75Not Listed
Moto Guzzi 853cc V9 Bobber, Roamer(2016-2017)
Piaggio - Gilera 125cc Runner 1252010
Piaggio - Gilera 300cc Nexus 300ie(2010-2013)
Piaggio - Gilera 500cc Nexus 500ie2010
Piaggio 250cc BV250(2008-2014)
Piaggio 250cc MP3 250(2008-2016)
Piaggio 400cc MP3 400(2008-2016)
Piaggio 460cc X92009
Piaggio 500cc BV500(2008-2014)
Piaggio 500cc MP3 500(2008-2013)
Piaggio 500cc MP3 500/Sport ABS(2014-2016)
Royal Enfield 650cc Int, Continental GT(2019-2020)
Suzuki 1000cc DL1000 V-Strom(2002-2016)
Suzuki 1000cc SV1000, S(2003-2007)
Suzuki 1100cc GSX1100G(1991-1993)
Suzuki 1400cc VS1400GL Intruder, GLP, S83(1987-2011)
Suzuki 1500cc VL1500 Boulevard C90(2014-2017)
Suzuki 1500cc VL1500 Boulevard C90, T(2006-2011)
Suzuki 1500cc VL1500 Intruder C90, T(1998-2005)
Suzuki 1500cc VZ1500 Boulevard M90(2009-2017)
Suzuki 1600cc Marauder, Boulevard M95(2004-2005)
Suzuki 1800cc VLR1800 (C109R)(2006-2012)
Suzuki 1800cc VZR1800 (M109R)(2006-2019)
Suzuki 400cc LT-A400 Eiger 2WD, F Eiger 4WD(2002-2007)
Suzuki 400cc LT-A400 King Quad(2010-2020)
Suzuki 400cc LT-A400F King Quad2009
Suzuki 400cc LT-F400 Eiger 2WD, F Eiger 4WD(2002-2007)
Suzuki 450cc LT-A450X King Quad(2007-2012)
Suzuki 500cc LT-A500 King Quad(2010-2020)
Suzuki 500cc LT-A500F Vinson 4WD(2002-2007)
Suzuki 500cc LT-F 500F Vinson Manual 4WD(2003-2007)
Suzuki 650cc AN650 Burgman(2003-2017)
Suzuki 700cc LT-A700X King Quad(2005-2007)
Suzuki 700cc LT-V700F Twin Peaks(2004-2005)
Suzuki 700cc VS700GL Intruder(1985-1987)
Suzuki 750cc LT-A750 King Quad(2014-2020)
Suzuki 750cc LT-A750X King Quad(2007-2013)
Suzuki 750cc VS750GLP Intruder(1988-1991)
Suzuki 800cc VS800 GL, S Intruder, Boulevard S502013
Suzuki 800cc VS800GL, S, Boulevard S50(2006-2012)
Suzuki 800cc VS800GL, S, Intruder S50(1992-2005)
Suzuki 800cc VX800(1990-1993)
Triumph 1050cc Speed Triple, R(2011-2018)
Triumph 1050cc Sprint GT(2011-2018)
Triumph 1050cc Tiger(2013-2018)
Triumph 1200cc Trophy(2000-2004)
Triumph 800cc Tiger 800(2011-2017)
Triumph 900cc Tiger(1999-2001)
Triumph 955cc Daytona 955i, Speed Triple, Sprint ST(1999-2004)
Triumph 955cc Sprint RS(2000-2004)
Triumph 955cc Tiger(2002-2007)
Vespa (Piaggio) 250cc BV250(2008-2009)
Vespa (Piaggio) 250cc GTS2502010
Vespa (Piaggio) 250cc GTV2502010
Vespa (Piaggio) 250cc MP3 250(2008-2009)
Vespa (Piaggio) 300cc GTS300(2010-2012)
Vespa (Piaggio) 300cc GTS300, GTV300(2013-2016)
Vespa (Piaggio) 400cc MP3 400(2008-2009)
Vespa (Piaggio) 460cc X92009
Vespa (Piaggio) 500cc BV500(2008-2009)
Vespa (Piaggio) 500cc MP3 500(2008-2009)
Yamaha 1000cc FZR1000(1991-1995)
Yamaha 1000cc GTS1000(1993-1994)
Yamaha 1000cc YZF1000R(1997-1998)
Yamaha 1200cc FJ1200(1991-1993)
Yamaha 660cc YFM660R Raptor(2001-2005)

Technical Specifications

  • Dimensions (LxWxH): 5.83 x 3.23 x 5.51 in
  • Part Number: LFX21A6-BS12
  • Weight: 3.03 lb
  • DC Output Voltage: 12V
  • Warranty: 3 Year Manufacturer
  • Recommended Use: Heavy Duty Powersports
  • Amp/Hr: 21 PbEq
  • C.C.A.: 315
  • Shipping Weight: 3.5 lb
  • UPC: 4897034420692
  • Made in: China
  • Manufacturer: Shorai
  • Manufacturer’s Part Number: LFX21A6-BS12
  • Model: LFX21A6-BS12



5.00 Average
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Rated 5.00/5 Stars from 3 customer reviews.

Do you own the LFX21A6-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 motorcycle battery

This battery is simply amazing! I have a 2007 Kawasaki ZX-14 and on average, I replace batteries every year or two. This particular battery has much more capacity than the stock lead acid battery, but the replacement spec wise for my bike was quite a bit smaller and although Thea come with a huge selection of foam pads to shim them to size, I was lazy and bought this battery which has almost the exact same sizes as the stock battery. The biggest shock to me is the weight. I you were handed one and didn't know what it was, you would expect it was a hollow display. Seriously, the weigh difference has to be felt to be believed! My bike lights right up every time and although it was never really a fear before, I certainly have no worries about having enough power to start the bike. I just wish I could get it out easier to show people it's almost a shame that the battery is so difficult to get to as I want to show it off.


The ONLY negative I can come up with is that it costs three times as much as the lead acid it replaces, although if you were to use the foam that comes with these and get the smaller battery, you could save a few dollars that way. Other than the cost, I would have these lithium batteries in everything I own, and who knows, I just might start heading that direction anyway.

Is this review helpful?
Written by on Aug 24, 2012. Ownership: Use regularly. — (97 of 174 customers found this review helpful)
LFX21A6-BS12 Shorai 12v 21 AH PBEq LiFePO4 Power Sports Battery

When used on the Valkyrie the thin pad is used on the bottom, front & back as well as one side. I put the thin self-stick pad on the positive side to align the cables. What's also cool is that they have double screw down locations and a spare post extension... I used the short screws to attached the Battery Tender and Heated Gear cables. Screwig down the bike plus/minus cables with only the USB asscessory lines... so they gave the battery posts some thought versus the standard lugs. the battery post screw down is also a threaded hole versus a nit. THANKS.

Quality built, lightweight and charged when delivered with multiple self-stick pads for fittment that double as shipping material. The CCA of the battery is amazing and for large CC or high compression motors. Having put one of these in my Ducati 1098R 2 years ago, which is high compression big bore, it starts every time now.


Not really a CON but, wish they would provide the Charger lead for the battery although is is an accessory that comes with the charger and can be obtained seperately.

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Written by on Aug 02, 2014. Ownership: Just Bought. — (84 of 161 customers found this review helpful)
The Way Forward

The foam and hardware kit that comes with the battery is second to none. Period. The charger kit comes with an on board charger cable, weather and dirt resistant, fully molded plug on one end, molded and capped on the other (which connects to the charger), which I could tuck away easily under the left hand side cover of my Vulcan 2000. A clean and complete solution. Don't experiment with other chargers.

The lightest motorcycle battery ever, with the highest CCA.

In fact, it feels so light in your palm, you'd think the shell is empty. Very complete and neat Shorai Kit, with everything one could possibly ask to perfect a clean installation, including on board charging. I paid that much for just another lead acid garbage battery that did not even have a set of bolts with it. Shorai Kit is truly impressive. Finally I found a battery, capable of cranking my Vulcan 2000 motor with ease. With the Shorai charger for easy maintenance charging and storage - it doesn't get better than this. Definitely the way to go forward with motorcycle batteries.



Is this review helpful?
Written by on Aug 24, 2013. Ownership: Use regularly. — (84 of 161 customers found this review helpful)

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