Shorai LFM18L1-BS12 Lithium-Iron Powersport Battery with BMS
Item #: LFM18L1-BS12   |    Backordered: Estimated Available June 28th, 2026

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Shorai LFM18L1-BS12 Lithium-Iron Powersport Battery with BMS

Item #: LFM18L1-BS12   |  Backordered: Estimated Available June 28th, 2026

Today's Price: $188.96
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Price: $188.96


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Product Specifications for Shorai LFM18L1-BS12 Lithium-Iron Powersport Battery with BMS

Specifications:
BM Part #: LFM18L1-BS12
Battery Polarity: Right Positive Terminals
Voltage: 13.2 Volt
Cold Cranking Amps: 270 CCA
Capacity: 6 Ah (18 Ah Equivalent)
Type: Lithium Iron
Length: 5.83"
Width: 2.60"
Height: 4.13"
Shipping Weight: 2.12Lbs
Warranty: 1 Year Free | 5 Year Prorated Factory Direct
Features:
  • Includes Shorai Sentry Battery Management System.
  • Ultra light - The cheapest way to shave pounds off your racing motorcycle
  • Twice to four times the service life of lead-acid batteries
  • Fitted replacement for your OEM battery
  • Military spec Carbon Fiber Composite Case
  • Faster cranking for better starts
  • Super-fast recharge rate
  • SAFE! No explosive gasses during charge, no lead, no acid
  • Environmentally friendly
  • Bolt Size: 10mm bolt with 5mm threads.
  • Powersport applications only. Do not install in cars.

Product Description

Free Standard Shipping!

Order today and get free standard shipping on your Shorai LFM18L1-BS12 Lithium-Iron Powersport Battery with BMS. This offer is valid for the contiguous 48 states.

Shorai's Lithium Iron batteries are the ultimate fusion of light weight and power technologies. The LFX18L1-BS12 battery weighs in at 2.12 pounds and offers 270 CCA. These batteries will require no change to your charging systems and are a drop-in replacement for your original battery (Included shims may be required for installation).

What makes Shorai batteries different? They contain Shorai-proprietary eXtreme-Rate Lithium Iron prismatic cells (chemistry LiFEPO4). They contain no poisonous lead, no dangerous acid, and do not create explosive gases during charge, as traditional Lead-Acid batteries do. Compared to traditional batteries, Shorai lithium batteries are extremely light, have much lower self-discharge rate, do not sulfate, and are environmentally friendly.

Can I use Lead-Acid battery chargers or charger/tenders?
Yes. HOWEVER, you may NOT use a charger/tender if it has an automatic desulfation mode, which cannot be turned off. We have confirmed with Deltran, makers of the Battery Tender brand, that their products do NOT have a desulfation mode, and are therefore OK for use with Shorai batteries.

Can Shorai LFX be mounted in any position?
Yes. There are no liquids in these batteries.

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Frequently Bought Together:
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Shorai LFM18L1-BS12 Lithium-Iron Powersport Battery with BMS
Shorai LFM18L1-BS12 Lithium-Iron Powersport Battery with BMS
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Total for Both Items: $278.91

What's the difference between the "equivalent" and "Actual" amp hour capacity?

The manufacturer includes the "equivalent" (PbEq, "lead equivalent") rating to show a more apples-to-apples comparison between the lithium chemistry and the lead-acid battery that you're likely replacing.

The lead-acid capacity rating itself is based on a complete discharge at a low discharge rate. Under actual cranking conditions they will deliver considerably less than spec capacity. And because lead-acid batteries begin sulfating when only a small percentage of the capacity has been used, and their internal resistance rises as they are discharged, the actual capacity which can be used may be as little as 20% of the mfg. rating. Discharge in excess will not only damage the lead-acid battery, it may not allow proper starting as voltage sags.

For example, the Shorai LFM18 12V series have 6Ah cells internally. But, the cells are capable of 80% discharge without damage while still retaining more cranking power. As such, the usable capacity (or "reserve capacity") of an LFM18 12V battery is very close to 18Ah-rated lead acid batteries, while also providing superior cranking and huge weight reductions.


Cold Weather Performance Expectations

Down to about 20° Fahrenheit (-7°C) most users find that they can start normally on first crank. If your headlight comes on at key-ON, it is good for the batteries to flow some current before cranking in cold weather. The suggested headlight-on time before cranking depends on the temperature. If starting at 40°F/5°C, 30 seconds will help wake the battery and increase cranking performance. If at 0°F/-17°C, leave the lights on for 4~5 minutes before cranking. The result will be a better first crank, and longer battery life. If the engine fails to start on first crank, that first crank has warmed the battery, and the second attempt will be much stronger. Other accessories that can be turned on before cranking can also be used for this purpose, such as heated gear, radio, etc... Insuring that the battery is fully charged after storage also improves first-start performance in cold weather.


Warranty Terms

Shorai offers a Limited, Pro-Rated Five-Year Warranty for Shorai batteries, for defects in material and/or workmanship, pertaining to sales originating and delivered within the United States.

The warranty is divided into three periods from date of purchase within the USA, as follows:

Month
1~13
14~18
19~60
Discount from MSRP
100%
65%
50%

note: warranty updated June 1 2024 to increase months 13~18 to 65% discount from 50%

All warranty claims for products purchased and delivered within the United States are handled directly by Shorai Service LLC. only. Battery Mart can only provide information for getting in contact with Shorai for warranty claims. See the Warranty Form for online submission of warranty claims, and to get your Return Merchandise Authorization (RMA#) assignment. Replacement batteries are to be issued by Shorai and sent directly to the customer. No dealership is authorized to issue a replacement battery without prior written authorization from Shorai.

Please do NOT return any product to Shorai without an RMA# or before Shorai has contacted you. In many cases issues can be solved prior to return.

Conditions which will void warranty

  • Opening the battery case will void the warranty.
  • Applications Not listed on the Shorai website product finder such as: Aircraft, Automotive, Go Karts, Motive power (Shorai as main power source, not engine starter).
  • Over-voltage charging, or other error by charger or user setting of charger.
  • Use in excess of cranking (CCA) specifications (incorrect use in custom vehicle, etc).
  • Short circuit of main terminals or BMS port.
  • Short circuit caused by improper installation.
  • Improper connections to the 5-pin BMS port.
  • Over-discharge (i.e. resting voltage allowed to fall below 12.8V/6.4V for Lfx 12V/6V types).
  • Physical Damage to the battery occurring after purchase (impact, etc).

For custom vehicles if you have a stock motor pulled from another vehicle, then you can use our battery finder to select the battery that the motor came from as long as the starter gearing is the same. If you have any other questions, please give us a call and we will assist you.

Cross Reference & Compatibility

The Shorai LFM18L1-BS12 Lithium-Iron Powersport Battery with BMS has been cross-referenced to be compatible with or replace these OEM part numbers and models:
LFM18L1-BS12
LFX18L1-BS12
YB16AL-A2

Customer Reviews

4 Reviews | 4.8 out of 5
5 stars (3)
4 stars (1)
3 stars (0)
2 stars (0)
1 star (0)
100%
Would recommend this product.
What our Customers are saying
motorcycle battery
July 3, 2016
by on July 3, 2016

Its hard to believe something so small and lite could have so much power.I show it off to all my friends and tell them, "All the cool kids have lithium batteries in their bikes".

charles
Would recommend to a friend?
Yes
LIGHTER!!
July 25, 2014
by on July 25, 2014

DROPPED MORE WEIGHT THAN MY CARBON FARING DID!!

DUKBUTTER
MOAB UTAH
Would recommend to a friend?
Yes
Unbelievable
August 26, 2013
by on August 26, 2013

When I went to the pain in the b___ to remove the worn-out lead-acid battery, I wanted to install one that I never had to mess with again! This battery is 1/4 the size (volume) of the old one, about 1/4 the weight and yet cranks the engine much faster. Let's hope it lasts...

Crazy Carl Nitr
Norcross, GA
Would recommend to a friend?
Yes
Breakthrough technology
February 4, 2013
by on February 4, 2013

Great product. Priced competitively with conventional batteries.

Amazing technology compared to conventional lead-acid batteries. I still can't believe the light weight!

Atomman
northern Nevada
Would recommend to a friend?
Yes