Rated 4.80 out of 5 based on 10 customer ratings
(10 customer reviews)

$59.99

YTX20L-BS GEL 12V 18AH Battery for Yamaha YFM450FW Kodiak 12V Battery

Availability: In stock

SKU: YTX20L-BSGEL8 Category:
The YTX20L-BS GEL is a 12V 18AH GEL (Maintenance Free) battery. Requires no addition of water during the life of the battery. The Mighty Max YTX20L-BS GEL is a TRUE DEEP CYCLE battery that can be mounted in any position, requires no maintenance. When a Gel Cell battery is charged, no hazardous fumes escape the battery case, gases are processed within the battery itself.
Common uses for the YTX20L-BS GEL:  ATVs, Motorcycles, Personal Watercraft, Jet Ski’s, Snowmobiles and more.
The Performance and Characteristic of the YTX20L-BS GEL Battery
Maintenance Free / GEL configuration 
No leaks, spills or contact with acid 
No acid mist and pollution to the environment when charging and discharging. 
High capacity: 10-20% higher comparing to that of VRLA.
Low self-discharging and durable for storage.
Nice ability for resilience after over-discharge and the capacity of high discharge current increases by 30% over VRLA.
Amazing performances in all temperature conditions
Battery Dimensions in Inches : L (6.88) x W (3.42) x H (6.10) 
Volts

12V

Amp Hour

18Ah

CCA

270

Polarity

– I +

Chemistry

Gel

Length

6.88

Height

6.10

Width

3.42

Weight

11.79 Lbs

Warranty

1 Year

10 reviews for YTX20L-BS GEL 12V 18AH Battery for Yamaha YFM450FW Kodiak 12V Battery

  1. Rated 5 out of 5

    Kevin P

    Great battery with lasting power and looks great too. Gel battery for under $60, sweet! Comes with 15 month warranty that would take a ton of work to take advantage of. The only negative I would say is the terminal bolt and screw that come with battery are kind of tinny and cheap feeling.

  2. Rated 5 out of 5

    K. Russell

    This is the 2nd Mighty Max battery I’ve bought in the last couple of months for my 2 bikes after having terrible experience with another longer warranty battery in both that crapped out well under the warranty period. I bought the Mighty Max after reading the reviews and am hopeful about this one. Obviously, I can’t review longevity or value with it being so new.

  3. Rated 5 out of 5

    Troy Spencer

    Great battery. Holds a charge very well.

  4. Rated 5 out of 5

    Web Customer

    My 700 grizzly atv works great,fit perfectly

  5. Rated 3 out of 5

    Patty

    They first sent the wrong battery but after a week or so of sending pictures an so on they sent me a return. Another week or so and I received the correct battery and a 10.00 credit for my trouble. The battery fit and worked great for 11 months. Now won’t hold a charge.

  6. Rated 5 out of 5

    Carl

    Fit perfectly and started it right up .

  7. Rated 5 out of 5

    Darrell Erbes

    Good product

  8. Rated 5 out of 5

    NJ tradesman

    oem match, hope it last.

  9. Rated 5 out of 5

    frederick blake

    so far so good

  10. Rated 5 out of 5

    Shasha

    Easy to install. Works great, our 4 wheeler started right up and runs great.

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Excellent
Mighty Max Battery
Based on 4143 reviews
Arrived in perfect condition
2011 Yamaha Raptor 700R battery, started right up. Has a 1 year warranty. Great deal.
Love mighty max batteries
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.
Ktm duke 390
Arrived next day and sas very easy to install. They also offer free 3 warrany extension.
I ordered this MightyMax battery through Amazon. The Ad states it works in my GE Simon XT house alarm.
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.
Looks the part, I am charging it fully before install on my jet ski.
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