YTX9-BS LIFEPO4 - 12 Volt 8 AH, 300 CCA, Lithium Iron Phosphate (LiFePO4) Battery
YTX9-BS LIFEPO4 - 12 Volt 8 AH, 300 CCA, Lithium Iron Phosphate (LiFePO4) Battery
YTX9-BS LIFEPO4 - 12 Volt 8 AH, 300 CCA, Lithium Iron Phosphate (LiFePO4) Battery
YTX9-BS LIFEPO4 - 12 Volt 8 AH, 300 CCA, Lithium Iron Phosphate (LiFePO4) Battery
YTX9-BS LIFEPO4 - 12 Volt 8 AH, 300 CCA, Lithium Iron Phosphate (LiFePO4) Battery
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.

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

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Pete Wagner
Ordered from Amazon it Arrived fully charged for my grandsons ATV for Christmas it's already wrapped so this is the best picture I can do at this time.
David McCoy
The batteries arrived on time. They were securely packaged. I especially appreciated that they arrived fully charged. I was able to install them immediately.
Jack Bair
Mighty Max reported to alarm backup duty today. I have always had long life from Mighty Max.
Michael Costanzo
Fit perfectly.
Daniel Wall
So far so good I bought it for my 99 Sportster XL 1200 S I've only had it installed for a day and I've been riding the bike all day long made half doesn't stops and fired right up no problems every time keeping my fingers crossed it stays like that for next year or so
Mikey Damian
Perfect sized battery for my atv, I’ll update my review as time goes
Thernell Davis
Unloaded and installed. It fired right up. Thanks a lot !!
Anthony Crislip
If you want great batteries at a great price, look no further than Mighty MAX on Amazon. I will definitely purchase again.
John Grant
Battery arrived packaged well and in great shape. I just got my deer corn feeder for Christmas. I did plug it in and made sure it worked great. I will not start using it in Sept of 2026. So looking forward to a better and easier way to feed my deer during season next year.
Saul Parra
It's good quality, I just need to try it out. I bought it at Home Depot.

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