Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)

$79.99

YTX9-BS Lithium Replacement Battery Compatible with PowerTex PTX9

Availability: In stock

SKU: YTX9-BSLIFEPO4400 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

1 review for YTX9-BS Lithium Replacement Battery Compatible with PowerTex PTX9

  1. Rated 5 out of 5

    Jason E DeFore (verified owner)

    So far, so good. My original battery in my 2023 Z400 died after 5 months. This guy turns the bike over way better, even in the 20’s. I’ve only been using it for 2-3 weeks, but as long as it makes it a few years, I will consider it a great investment.

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Excellent
Mighty Max Battery
Based on 4228 reviews
Battery arrived in excellent condition. Even though it is the same 9ah size battery as the original one I am replacing, it is a slightly smaller size package requiring me to add extra washers as spacers on the battery hold down bolts. No big deal just be aware you may need to do the same thing. I hope this one lasts as long as the previous brand did.
Fully charged when delivered 03/28/2026.
THANK YOU!!!
If it perfectly and had plenty of juice good deal for the money
It works really good !
Easy to install came fully charged and started the kids 4 wheeler on the first crank
Ordered 2 batteries. Great price. Very well packaged. No damage and work flawless.
Delivered on time and in good condition.
First time start up in 7 yeas!!!!!!
The battery arrived by Amazon and after installation the vehicle started.