Rated 4.72 out of 5 based on 25 customer ratings
(25 customer reviews)

$34.99

YTX9-BS GEL 12V 8AH Battery for Honda ATV TRX300EX TRX400EX 300EX/400

Availability: In stock

SKU: YTX9-BSGEL209 Category:
The YTX9-BS GEL is a 12V 8AH GEL (Maintenance Free) battery. Requires no addition of water during the life of the battery. The Mighty Max YTX9-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 YTX9-BS GEL:  ATVs, Motorcycles, Personal Watercraft, Jet Ski’s, Snowmobiles and more.
The Performance and Characteristic of the YTX9-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 (5.90) x W (3.38) x H (4.25) 
Weight

6.72 Lbs

Width

3.38

Height

4.25

Length

5.90

Chemistry

Gel

Polarity

+ I –

CCA

135

Amp Hour

8Ah

Volts

12V

Warranty

1 Year

25 reviews for YTX9-BS GEL 12V 8AH Battery for Honda ATV TRX300EX TRX400EX 300EX/400

  1. Rated 5 out of 5

    Adam

    Bought this as a replacement for my RE Himalayan. The stock battery pretty much sucks, so this has been exponentially better. No issues on startups like I was experiencing in owning the bike the first few months of owning it new. The nice thing is if I decided to mount it horizontally, I could. Little bit lighter, kind of a pain to get in the battery box, but that’s not their fault, poor design by RE, but all in all, value, and overall performance is worth it for me.

  2. Rated 5 out of 5

    D.l.C.

    Bought for my 400ex, easy to install, has plenty of power to crank the 440 high compression upgrade, so far a great battery!!!!!!!

  3. Rated 5 out of 5

    Max

    Great look and performance

  4. Rated 5 out of 5

    TM

    Works well in my Honda TRX500 and TRX420 although shorter than OEM battery so time will tell if it has enough capacity. Really like that it actually shipped to Alaska!

  5. Rated 4 out of 5

    IR

    Quality doesn’t seem to be all that great but time will tell so far so good

  6. Rated 5 out of 5

    Bradley Sanderson

    Great product

  7. Rated 5 out of 5

    Michel J Morin

    It’s great.

  8. Rated 4 out of 5

    Thomas

    Seems to do the job for the price. Good job mighty max

  9. Rated 4 out of 5

    Doug Morales

    Nothing

  10. Rated 5 out of 5

    jacob hiles

    Seems like a very good battery I have only had it for a month easy to hook up

  11. Rated 5 out of 5

    Bonnie L.

    was what I needed, came faster than stated

  12. Rated 5 out of 5

    Web Customer

    arrived on time, worked as advertised, nice battery

  13. Rated 5 out of 5

    Derik Rutherford

    Looks well built gel design , came with a full charge . Amazing battery at an amazing price .

  14. Rated 2 out of 5

    Richard I.

    It worked for about a day, we ended up putting the factory battery back in the ATV.

  15. Rated 5 out of 5

    Mark

    So far so good. 12.84 v out the box fits perfectly Ninja start on the first try.

  16. Rated 4 out of 5

    Gregg Fowler

    Like gel type. Four wheeler

  17. Rated 5 out of 5

    Jeffrey Bargy

    Great battery. Reasonable price. Pretty much ready to go out of the box.

  18. Rated 5 out of 5

    Ed Woodside

    These batteries don’t loose charge over time while not in use.

  19. Rated 5 out of 5

    Dutch

    Ordered for generator, better then original battery.

  20. Rated 5 out of 5

    Rick McKeon

    It fit great and is working

  21. Rated 5 out of 5

    Jose Salmeron

    Works really good & it fits perfect in the battery holder.

  22. Rated 5 out of 5

    JUSTIN LUTHER

    great battery and price was very affordable.

  23. Rated 5 out of 5

    Jonathan S.

    Definitely a good battery for my Chuckus. Upgraded bbk on the 50 and cranks right up.

  24. Rated 5 out of 5

    Skipperkeith

    This battery is well constructed and meets all advertsed specs. I would buy it again if needed.

  25. Rated 5 out of 5

    Justin Wolgemuth

    Great.. thank you

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Excellent
Mighty Max Battery
Based on 3474 reviews
Arrived quickly. Even got a sticker with it.
Solid looking battery, came well packaged. Have used their battery before for my lawnmower and now looking forward to see how it lasts in my snowmobile.
I can't believe it less than 48hrs since I ordered from Walmart and it's in the machine. What more can I say except great price.
Thanks Larry
Item as described and perfect fit and arrived on time
Battery arrived in a good shape package strait to my door steps
Arrived just in time to power my generator here in the cold Maine winters. Excellent service!
Arrived quickly from WALMART.COM. Perfect size and proper placement in my generator. Installation was easy. Generator fired right up. Battery came fully charged.
New battery. Ready for cold weather!
So far these Might Max batteries are good but it’s only the first day and they were on charge for 12 hrs. I’ll have to come back and do an update at some point in time. Ordered them on Amazon and got them the next day. I was encouraged by Mighty Max to make this google review and post pictures to extend my warranty for 3 months but there is no way to post pictures 🤣🤣🤣 It’s been a few months and I was able to go back and edit, so here is a video I made, the rest of the photos I have deleted. Batteries are still going strong. Update 12-11-2025
They arrived within 2 days of ordering them packaging was really good I haven't put them in my MX350 yet I hit them with my multi meter fresh out of the box and got 12.4v on both batteries so that is good