Antigravity YTX20 Lithium Battery

(2 customer reviews)


The Antigravity Batteries YTX-20 is a Lithium-Ion replacement battery for the OEM Lead/Acid Battery often called the “20 Size”. The difference is that the Antigravity Batteries Lithium-Ion version weighs less than 5 lbs and amazingly offers OVER 2.5 times the Cranking Power of the Lead/Acid version!

  • YTX20 case size
  • 6.875 x 3.44 x 6.125 inches (LxWxH)
  • 780 Cranking Amps
  • 32 Amp Hours (Pb Eq)/ 16Ah (Actual)
  • 4.68 lbs
SKU: AG-YTX20 Categories: ,


Extreme Power Series (XPS) Lithium Battery

The Antigravity YTX20 is a Lithium battery to replace the OEM Lead/Acid Battery often called the YTX20, YTX20L, YTX20H, YTX20-BS or the “20 Size”. The OEM standardized size of the YTX-20 is used in a many different manufacturers models of Motorcycles including Harley Davidsons, Victory, Metric Cruisers/Tourers as well as many Powersport Vehicles such as UTVs/ATVs, Snowmobiles and more. In comparison, Antigravity’s Lithium-Ion version offers impressive weight savings at only 4.68 lbs, and OVER 2.5 times the Cranking Power of the Lead/Acid version! So those difficult-starting large Custom V-Twin Motors can be turned over with ease.

The Antigravity YTX-20 battery can also be used in Hi-Performance Automotive and Racing applications where extremely high cranking power and massive weight reduction in a very compact size are desired. As with all our batteries, you can easily bolt on our Automotive Terminal Adapters for use in high performance automotive applications.

To give you an idea of the power of this battery, the YTX-20 can easily start 145 Cubic Inch S&S V-Twin Motors, and just as easily start an 800 Horsepower V8 Roush Racing Motor typically found in Trophy Trucks or NASCAR Sprint Cars, yet the battery weighs LESS than 5 pounds! At a massive 780 Cranking Amps in an extremely compact size, this battery offers the most power in the smallest package you can find for your vehicle.


  • Ultra-Lightweight and Highest Power Lithium Motorsport Battery made in this size format.
  • Super Compact Lithium-Ion Battery Design.
  • Can offer weight savings of up to 32 pounds in race cars and 14 pounds in Motorcycles.
  • Can hold a charge OVER a year provided there are no “Parasitic Drains” (accessories that draw power when the vehicle is off, such as alarms, ECUs, iPods, GPS, heated grips, etc).
  • Sturdy, big, all-brass terminal design.
  • All Antigravity Batteries are designed to allow for BOLT-ON SAE Automotive Battery Terminals for use with Performance Autos.
  • 3-Year Warranty (view our Warranty page for details).

Best Uses

  • Excellent for every day use in bikes up to 2600cc.
  • Great for extra large, high-performance V-Twin motors.
  • Best Choice for Extra Large V-Twin Motors… if this battery won’t turn it over then it is not a battery issue.
  • Excellent for Touring Bikes, Adventure Bikes and Bikes where extreme power and larger Amp Hour capacity are needed.
  • Excellent for use in Race Cars of all types including large V-8 Racing Motors.

Not for use in Passenger Cars or Street use Automobiles.

Proposition 65 Warning

WARNING: Cancer and Reproductive Harm –

Additional information
Weight 6.5 lbs
Dimensions 4 × 7.5 × 6.5 in
Product Weight

4.68 lbs

Product Size

6.875" x 3.44" x 6.125" (mm: 175x87x156)

Cranking Amps


Amp Hours (Pb Eq)


Reviews (2)

2 reviews for Antigravity YTX20 Lithium Battery

  1. jdrosenswie (verified owner)

    Installed in a 2016 Can Am 1000R Outlander Max XT. Fitment is perfect. This battery is so powerful it starts with one rollover of the engine. Handles lights, winch, and hand warmers without any issues or pulsing of lights even at idle RPM. Higlhy recommend for anyone with a high end ATV or side by side with multiple electrical açcessories. Please list this as a compatible battery for can am outlanders and you’ll sell more. Antigravity also threw in a free electric lantern/light/speaker and a winter hat with built in Bluetooth headphones after having some issues with my order. I highly recommend antigravity as a company with great products.

  2. mrbreezejax (verified owner)

    Purchased this battery for a custom chopper with a 127 ci motor, WOW spins it over like it was a 50cc. Thank you antigravity!!!

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