$449.99
The Antigravity Batteries ATX-20-HD is a lightweight Lithium Ion replacement for the standard size 20 lead-acid battery. Weighing just over 5 lbs while delivering over 3x the cranking power of traditional Lead/Acid or AGM batteries.
Antigravity ATX20-HD Lithium Battery is a high-power, heavy-duty lithium replacement for the popular YTX20-size lead-acid battery. Designed for applications that demand more cranking power and greater battery capacity without adding unnecessary weight, the ATX20HD combines an impressive 780 cranking amps with 30 Ah PbEq (15 Ah actual / 192 Wh) capacity in a battery weighing only 5.18 lbs.
Part of Antigravity Batteries’ Heavy Duty (HD) Series, the ATX-20-HD was specifically developed for applications requiring significantly more power and amp-hour capacity than a standard lightweight lithium powersports battery. It is an excellent choice for high-performance motorcycles, UTVs, ATVs, racing applications, heavily accessorized vehicles, and other equipment where compact size, weight savings, and dependable starting power are important.
One of the biggest advantages of the Antigravity ATX20-HD is the combination of serious starting power and extremely low weight.
At just 5.18 lbs, the ATX20HD can be up to 70% lighter than an equivalent lead-acid battery while producing up to twice the cranking power of similarly sized lead-acid batteries. That means faster, stronger starting performance while removing unnecessary weight from your vehicle.
For racing and performance applications, reducing weight while maintaining dependable electrical power can make the ATX-20-HD an especially attractive upgrade.
The ATX20-HD features Antigravity’s advanced full Battery Management System (BMS) designed to protect the battery and maximize its service life.
The integrated BMS provides:
These protections help keep the individual lithium cells operating properly while reducing the possibility of damage caused by common charging and discharging issues.
The ATX20HD uses LiFePO4 (Lithium Iron Phosphate) chemistry, providing a stable and durable lithium battery platform designed for demanding powersports and racing applications.
Unlike Antigravity’s RE-START batteries, the ATX-20-HD does not include the built-in RE-START jump-starting feature. Instead, the Heavy Duty design provides a deeper level of discharge, giving you more usable battery capacity and additional cranking power.
This makes the ATX20-HD especially well suited for applications with additional electrical accessories or equipment that requires more reserve capacity.
The ATX20HD isn’t simply lightweight—it is designed to withstand demanding operating environments. Its construction is shock and vibration resistant, making it an excellent choice for racing, powersports, and other applications where batteries experience considerably more abuse than they would in a typical street vehicle.
Because there is no liquid acid inside the battery, it can also be mounted in virtually any orientation without worrying about acid spilling or leaking.
The ATX-20-HD features Antigravity’s versatile 4-terminal design, making installation easier across a wide variety of vehicles.
With positive and negative connection options on both sides of the battery, you have greater flexibility when routing cables and replacing batteries with different terminal orientations.
A built-in lighted voltage indicator also allows you to quickly check the battery’s state of charge directly at the battery.
Battery: Antigravity ATX-20-HD
Battery Type: LiFePO4 Lithium
Cranking Amps: 780 CA
Capacity: 30 Ah PbEq
Actual Capacity: 15 Ah
Energy: 192 Wh
Weight: 5.18 lbs
Dimensions: 6.89″ L × 3.4″ W × 5.12″ H
Terminal Design: 4 Terminal
Battery Management: Full BMS
RE-START Feature: No
Voltage Indicator: Yes
The ATX20-HD uses the popular YTX20 standardized case size and can replace a variety of traditional lead-acid battery sizes, including select:
YTX15, YTX15L, YTX20, YTX20-BS, YTX20L, YTX20L-BS, YTX20H, YTX20H-BS, YTX20HL, YTX20HL-BS, YIX20HL, GYZ20H, GYZ20L, and GYZ20HL applications.
Always verify battery dimensions, terminal configuration, and vehicle compatibility before ordering.
At Liquid Revolutions Racing, weight, power, and reliability matter. We’ve used Antigravity Batteries in our racing and support equipment because they provide the combination of lightweight construction, powerful starting performance, and advanced battery protection we want in demanding applications.
The ATX20-HD takes that philosophy even further by packing 780 cranking amps and substantial reserve capacity into a battery weighing just over five pounds. For applications where you need more power without adding unnecessary weight, it’s an impressive upgrade over a traditional lead-acid battery.
The ATX20HD should be charged using a lithium-compatible battery charger. Do not use a traditional lead-acid-only battery charger.
The ATX-20-HD is not recommended for Personal Watercraft (PWC) applications and is not intended as a standard street-automotive battery. For race-only automotive applications, Antigravity recommends contacting them to verify suitability before use.
For motorcycles, UTVs, ATVs, racing equipment, and other compatible powersports applications, the Antigravity ATX20-HD Lithium Battery delivers an outstanding combination of lightweight construction, high cranking power, usable capacity, advanced BMS protection, and race-proven durability.
