Shorai LFX27L3-BS12 Lithium-Iron Powersport Battery
Item #: LFX27L3-BS12   |    Backordered: Available December 7th, 2023

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Shorai LFX27L3-BS12 Lithium-Iron Powersport Battery

Item #: LFX27L3-BS12   |  Backordered: Available December 7th, 2023

Today's Price: $266.95
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Price: $266.95

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1 Year Free | 5 Year Prorated Factory Direct Warranty
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Product Specifications for Shorai LFX27L3-BS12 Lithium-Iron Powersport Battery

BM Part #: LFX27L3-BS12
Battery Polarity: Right Positive Terminals
Voltage: 12 Volt
Capacity: 9 Ah (27 Ah Equivalent)
Type: Lithium Iron
Length: 6.55"
Width: 3.39"
Height: 6.10"
Cold Cranking Amps: 405 CCA
Shipping Weight: 4.19Lbs
Warranty: 1 Year Free | 5 Year Prorated Factory Direct
  • 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.
Frequently Bought Together:
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Shorai LFX27L3-BS12 Lithium-Iron Powersport Battery
Shorai LFX27L3-BS12 Lithium-Iron Powersport Battery
Shorai Battery Charger for 6 Volt and 12 Volt LFX Batteries
Shorai Battery Charger for 6 Volt and 12 Volt LFX Batteries
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Total for Both Items: $366.90

Product Description

Free Standard Shipping!

Order today and receive free standard shipping on your Shorai LFX27L3-BS12 Lithium-Iron Powersport Battery. Only valid in the contiguous 48 states and not valid with any other offer.

Shorai's Lithium Iron batteries are the ultimate fusion of light weight and power technologies. The LFX27L3-BS12 battery weighs in at 4.19 pounds and offers 405 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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Split bar is installed underneath cap to activate battery.

Tech Tip:

Remember to Install the Split Bar!

To meet shipping regulations, this Shorai battery is disconnected and inactive to allow it to be legally shipped via ground and air services. Thankfully, the procedure to 'activate' the battery is extremely simple, but can be easy to overlook.

The hardware you'll need is included in your box: A "series" bar about 1 7/16" in length, two M6 bolts and washers, four screws and a plastic cover. These pieces are bagged together in your box. The bar needs to be installed as shown to the left and torque the bolts to 75kg/cm (7.3nm, 68 inch/lb) before your battery can be used.

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 LFX18 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 LFX18 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.

Customer Reviews

8 Reviews | 3.9 out of 5
5 stars (5)
4 stars (1)
3 stars (0)
2 stars (0)
1 star (2)
Would recommend this product.
What our Customers are saying
Decent but pricey
August 3, 2022
by on August 3, 2022

It's ideal for a small displacement motor of say no bigger than 800cc. I had a friend who asked me to acquire a replacement battery for his 500cc ATV. I convinced him to pay for a better battery than his boat anchor of a lead acid model, anything is better than a Yuasa.
His old battery had started failing after a few years, eventually it would turn over. I popped in the new Shorai and it sparc'd to life right away.
I like EarthX and Anti-grav better than this but it's a nice battery and seems well made. Most riders i've asked about this had good things to say about it. As long as you don't pick this for a large high compression engine like a Harley you can't go wrong.

Would recommend to a friend?
lithium-ion motorcycle battery
October 5, 2016
by on October 5, 2016

battery was shorter then my battery I had before, came with all kinds of different thickness foam inserts which made it simple to install for a great fit in the battery box. the weight is 1/3 that of my stock battery and so far cranks 10 to 1 compression great! came with a load of material about chargers, cables etc. very pleased so far.

apopka, florida
Would recommend to a friend?
Shorai battery
July 2, 2016
by on July 2, 2016

These batteries are remarkable, lightweight and very powerful. Yes they are expensive but I think in the long run they will be worth every cent.

West Virginia (WV)
Would recommend to a friend?
February 17, 2014
by on February 17, 2014

Never even got the bike to start wit hit. Took out my Heavy lead Odyessa for this one and it wont even crank the motor. Put my old one back in and it worked fine.Wait waste of time and effort.

Would recommend to a friend?
VERY Impressive...
June 18, 2013
by on June 18, 2013

The installation instructions said that the new lithium-iron battery was already 70% charged and that I should charge it to 14.4V but I could only get it to 13.9V...

Central Florida
Would recommend to a friend?
Harley owner's don't buy
January 13, 2013
by on January 13, 2013

Installed in 08 ultra 11/21/12, will not start when bike is hot. bike checked by HD mec. said it was Bat. sent bat back to factory 12\19\12, they said it was starter.

Installed new Harley bat. no more porblems.

Bay area
Would recommend to a friend?
Powering a 1985 Moto Guzzi California II
November 19, 2012
by on November 19, 2012

I had a very bulky original lead-acid battery. I wanted something that would be somewhat maintenance-free, yet provide automotive-type starting power. This may be the ideal motorcycle battery. It's gotten cold in the midwest, yet I am able to fire up on the first shot. I'm impressed

Chicago, IL
Would recommend to a friend?