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Antigravity Batteries ATX20 780 Cranking Amp Battery

  • Sale
  • $ 395
  • Regular price $ 410

The NEW Antigravity Batteries ATX20 is a Lithium-Ion replacement battery for the OEM Lead/Acid Battery often called the YTX20, YTX20L, YTX20H, YTX20-BS or the “20 Size”. But 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! So those difficult starting large Custom V-Twin Motors can be turned over with ease.

The OEM standardized size of the ATX20 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.

The new ATX20 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 ATX20 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 ATX20 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).
  • All Antigravity Batteries are designed to allow for BOLT-ON  SAE Automotive Battery Terminals for use with Performance Autos. SEE HERE>>SAE AUTO BATTERY TERMINAL ADAPTERS 
  • 3-Year Pro-Rated Warranty----check website for details (antigravitybatteries.com).


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.


Technical Details

  • 780 Cranking Amps - Cranking Amps are the power the battery has.
  • 25 Ah (PbEq) 17 Actual Amp Hours - Amp Hours are the Capacity of a battery.


Dimensions and Weight

  • USA SIZE (LxWxH): 6-7/8" x 3-7/16" x 6-1/8" (Height is measured to the top of the battery case).
  • USA WEIGHT: 4 lbs 11 ounces
  • METRIC SIZE (LxWxH): 175mm x 87mm x 155mm (Height is measured to the top of the battery case).
  • METRIC WEIGHT: 2.13 Kg

    You will need these for any car running SAE terminals (pretty much all cars).  This includes all Miatas, RX7s, RX8s, etc.