Rated 4.86 out of 5 based on 7 customer ratings
(7 customer reviews)

$79.99

YTX9-BS Lithium Replaces Honda TRX400EX FourTrax, Sportrax 99-13

Availability: In stock

SKU: YTX9-BSLIFEPO448A Category:

Mighty Max Lithium Iron Phosphate (LiFePO4) engine start batteries are designed to replace Flooded, AGM, and Gel cell lead acid batteries in Power Sport applications such as motorcycles, ATVs, personal water craft, lawn mowers, utility vehicles, scooters, and dirt bikes.

  • Up to 80% lighter than Lead Acid Equivalent
  • 5X the Life of a Lead Acid Battery
  • 2000+ Deep Cycles at 80% Depth of Discharge
  • Foam spacers included to fit multiple size battery boxes.
  • Lithium Batteries do not sulfate

Attention – make sure to only use a compatible lithium charger for this battery and tightly screw the terminals. Having loose terminals will cause a buildup of heat resulting in damage to the battery.

 

Specifications:

Voltage: 12.8 Volt

Cold Cranking Amps: 300

Cranking Amps: 400

Watt Hrs: 51.2

Terminal: Nut and Bolt

Sealed Lead Acid Equivalent Amps: 8Ah

Case Dimensions:

5.94 in x 3.44 in x 4.25 in

Weight: 1.00 pounds.

Volts

12.8

Watt Hrs

51.2

Chemistry

LiFePO4

CCA

300

Length

5.94

Width

3.44

Height

4.25

Weight

1.00 Lbs

Quantity

1

Warranty

1 Year

Terminal

Nut and Bolt

7 reviews for YTX9-BS Lithium Replaces Honda TRX400EX FourTrax, Sportrax 99-13

  1. Rated 5 out of 5

    Web Customer

    Great battery- great price

  2. Rated 5 out of 5

    Customer

    Great battery- great price

  3. Rated 4 out of 5

    john

    Seems good. Charged up but I haven’t undertakes it yet because I’m not sure if it’s safe to with this crack. I’m guessing it should be alright since there’s no liquid.

  4. Rated 5 out of 5

    Web Customer

    This battery has 210 cold cranking amps,and the stock one only has 120. This one weighs 1.5 lbs, and my stock battery weighs 6.5 lbs. They are the same physical size, but the mighty max weighs 5 lbs less, and is way more powerful. Win Win!

  5. Rated 5 out of 5

    Customer

    This battery has 210 cold cranking amps,and the stock one only has 120. This one weighs 1.5 lbs, and my stock battery weighs 6.5 lbs. They are the same physical size, but the mighty max weighs 5 lbs less, and is way more powerful. Win Win!

  6. Rated 5 out of 5

    Savman

    Weighs almost nothing, super low discharge rate, great price. Fits the size of a stock battery so you dont have to have foam fillers to keep it from bouncing around. It also has a built in meter so you can see the charge level.

  7. Rated 5 out of 5

    U-234

    Perfect fit in my 1995 TRX300EX Honda. I like the fact that I didn’t need to use pads around the battery case. It is lighter than a 210 CCA Shorai that I bought 6 years ago for my Suzuki DRZ400S. The battery posts on the Mighty Max seem to be a little stouter than the ones on the Shorai. I am happy with the battery. I haven’t had it long. No problems.

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Excellent
Mighty Max Battery
Based on 3949 reviews
Arrived wrapped in plastic with nice rubber covers over terminals. going in my Harley ultra classic. Fit perfect. Arrived charged at 12.9 volts and ready to go. This big bike takes a lot of cranking amps and this battery starts it right up. It’s actually nicer than I expected for such a good price point. It has exceeded my expectations so far. I was hesitant to buy a cheaper battery but now that it’s here and in my bike I have no regrets. Good warranty too. Hopefully it will last.
Replacement battery for Centech 4 in 1 booster pack. Original battery never worked as it should and the Mighty max battery made it work better than ever before. It's a direct fit and had no issues with installation. Battery was well packaged and double boxed.
Ordered a 12v5ah for an Ion Job Rocket speaker that stopped playing and wouldn’t charge. The battery fit perfectly, came fully charged and now my speaker works again! Hope it lasts and recharges as it should! So far so good!
I just purchased this YTZ10S battery for my Champion generator and it came fully charged.
Super affordable battery for my backup. Easy to plug in. Perfect fit.
Replaced a 3 year old mighty max. New one seems to be working fine.
Great price for a nice lithium battery!
My wife and I are both retirees and we changed out our original equipment batteries on our Ryobi rm480EX with brand new mighty Max. We were both amazed at how simple it was to do and how straightforward. Plus we saved over $500 by going with mighty Max over the original equipment batteries. Here's a picture of my Ryobi 480EX unfortunately, I wasn't smart enough to take pictures before I closed everything back up.
Battery arrived in great shape. Works awesome as expected.
The battery arrived 5 days sooner than expected and it works perfectly. I am so relieved that it solved my problem.