YTX20L-BS - 12 Volt 18 AH, 270 CCA, Rechargeable Maintenance Free SLA AGM Motorcycle Battery
YTX20L-BS - 12 Volt 18 AH, 270 CCA, Rechargeable Maintenance Free SLA AGM Motorcycle Battery
YTX20L-BS - 12 Volt 18 AH, 270 CCA, Rechargeable Maintenance Free SLA AGM Motorcycle Battery
YTX20L-BS - 12 Volt 18 AH, 270 CCA, Rechargeable Maintenance Free SLA AGM Motorcycle Battery
YTX20L-BS - 12 Volt 18 AH, 270 CCA, Rechargeable Maintenance Free SLA AGM Motorcycle Battery
Rated 4.93 out of 5 based on 15 customer ratings
(15 customer reviews)

$54.99

YTX20L-BS Battery for Yamaha Big Bear Grizzly Kodiak YFM400 400, 450

Availability: In stock

SKU: YTX20L-BS256 Category:
This YTX20L-BS is a sealed lead-acid (SLA) absorbed glass mat (AGM) rechargeable battery. AGM and GEL batteries are lead-acid and of the same battery chemistry. This battery comes already charged, sealed, maintenance free, and ready to install.
Premium quality absorbed glass mat technology (AGM) is ideal for  ATVs, Motorcycles, Personal Watercraft, Jet Ski’s, Snowmobiles and more.
Specifications of the YTX20L-BS Battery
Voltage: 12 Volt
Amperage: 18 AH
Chemistry: SLA, AGM
Terminal: Nut & Bolt 
Battery Dimensions: 
6.88 in x 3.50 in x 6.13 in
Weight: 11.79 Lbs
Warranty
1 Year
Amp Hour

18Ah
CCA

270
Chemistry

SLA / AGM
Height

6.13
Length

6.88
Volts

12V
Polarity

– I +
Weight

11.79 Lbs
Warranty

1 Year
Width

3.50

15 reviews for YTX20L-BS Battery for Yamaha Big Bear Grizzly Kodiak YFM400 400, 450

  1. Rated 5 out of 5

    Matt –

    Works great

  2. Rated 5 out of 5

    gary pangione –

    good item good price

  3. Rated 5 out of 5

    robert –

    Old Battery/ new Battery same Size Easy install ????

  4. Rated 5 out of 5

    boaz22 –

    Great product. Easy to install. Fit perfectly. Longetivity TBD. SO FAR TO SO GOOD.

  5. Rated 5 out of 5

    Jessica cortez –

    Easy to install and a great price.

  6. Rated 4 out of 5

    Mrs. Young –

    Works fine just make sure your running it regularly to keep the charge

  7. Rated 5 out of 5

    RLM –

    YTX20L-BS – Very good battery for a good price. Mighty Max was very responsive to a shipping problem that was no fault of their own. Happy with their product and service.

  8. Rated 5 out of 5

    Stretchey –

    Installed in the Yamaha Big Bear starts up right away when COLD

  9. Rated 5 out of 5

    Calvin Aaron –

    Came charged and ready to go

  10. Rated 5 out of 5

    Calvin Aaron –

    Came charged and ready to go

  11. Rated 5 out of 5

    Chris haynes –

    Great battery for big bear 400

  12. Rated 5 out of 5

    Chris haynes –

    Great battery for big bear 400

  13. Rated 5 out of 5

    Web Customer –

    Works great hopefully last a long time

  14. Rated 5 out of 5

    Customer –

    Works great hopefully last a long time

  15. Rated 5 out of 5

    marcia meyer –

    Great fit and so far it is starting my Yamaha with no problem.

Only logged in customers who have purchased this product may leave a review.

Excellent
Mighty Max Battery
Based on 4143 reviews
See all reviews
allan levitt
Arrived in perfect condition
Lalo
2011 Yamaha Raptor 700R battery, started right up. Has a 1 year warranty. Great deal.
Zach Mankowski
Love mighty max batteries
Roger Smith
Arrived well packaged. No information as to original warranty coverage and term, but lots of solicitations to extend the warranty coverage for a whole amazing 90 days - Wow, such product confidence! At least it’s not made in China, but is Thailand any better for quality manufacturing? We’ll see.
AK B
Ktm duke 390
Kerry-Ann McNeil-Harris
Arrived next day and sas very easy to install. They also offer free 3 warrany extension.
Anne Marie Forbes
I ordered this MightyMax battery through Amazon. The Ad states it works in my GE Simon XT house alarm.
Susan Blankenship
I received my battery from Amazon on March 9, 2026. The box was a little squashed but the battery was packaged well and it it fine. I installed it and finally my gate opener is working properly. I purchased 2 batteries before this and had to return them because they were the wrong battery. This one is working great.
Eric Allen
Looks the part, I am charging it fully before install on my jet ski.
Allan Cain
These batteries arrived in great shape with the handle on top so you can carry it screw so you can hook them up very professional looking better about them from Home Depot

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