--- product_id: 334846881 title: "Antigravity ATX20-HD Lithium Motorcycle Battery, 780 Cranking Amps, 15Ah, YTX20 Replacement, Heavy Duty 12V Powersport Battery for Touring Motorcycles, ATV, UTV" brand: "antigravity batteries" price: "$988.71" currency: USD in_stock: true reviews_count: 9 category: "Antigravity Batteries" url: https://www.desertcart.us/products/334846881-antigravity-atx20-hd-lithium-motorcycle-battery-780-cranking-amps-15ah store_origin: US region: United States of America --- # 780 Cranking Amps max power 15Ah high capacity lithium Only 5.18 lbs ultra-lightweight Antigravity ATX20-HD Lithium Motorcycle Battery, 780 Cranking Amps, 15Ah, YTX20 Replacement, Heavy Duty 12V Powersport Battery for Touring Motorcycles, ATV, UTV **Brand:** antigravity batteries **Price:** $988.71 **Availability:** ✅ In Stock ## Summary > ⚡ Power Up Your Ride with Featherlight Fury! ## Quick Answers - **What is this?** Antigravity ATX20-HD Lithium Motorcycle Battery, 780 Cranking Amps, 15Ah, YTX20 Replacement, Heavy Duty 12V Powersport Battery for Touring Motorcycles, ATV, UTV by antigravity batteries - **How much does it cost?** $988.71 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/334846881-antigravity-atx20-hd-lithium-motorcycle-battery-780-cranking-amps-15ah) ## Best For - antigravity batteries enthusiasts ## Why This Product - Trusted antigravity batteries brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Advanced BMS Protection:** Built-in Battery Management System safeguards against overcharge, discharge, and temperature extremes for ultimate reliability. - • **Direct YTX20 Replacement:** Seamlessly fits your existing setup—no modifications needed, just plug and play. - • **Unmatched Starting Power:** 780 Cranking Amps deliver instant ignition for even the most demanding big bikes and touring rigs. - • **True 15Ah Lithium Capacity:** More usable energy means longer rides and better performance for heavily accessorized motorcycles. - • **Featherweight Performance Boost:** At just 5.18 lbs, it slashes weight compared to lead-acid batteries, enhancing handling and fuel efficiency. ## Overview The Antigravity ATX20-HD is a premium 12V lithium motorcycle battery boasting 780 Cranking Amps and a true 15Ah capacity. Designed as a direct YTX20 replacement, it features a full Battery Management System for superior protection and weighs only 5.18 lbs—significantly lighter than traditional lead-acid batteries. Ideal for touring motorcycles, ATVs, and UTVs, it ensures reliable, high-output starting power and longer runtime for heavily accessorized rides. ## Description The Antigravity ATX20-HD is a heavy-duty lithium motorcycle battery designed for high-demand applications requiring maximum power and capacity. With 780 Cranking Amps and a true 15Ah lithium pack, this battery provides significantly more usable energy than standard lithium batteries in the same size, making it ideal for touring motorcycles, large V-twins, and heavily accessorized bikes. Built with a full Battery Management System (BMS), the ATX20-HD offers protection from over-charge, over-discharge, temperature extremes, and cell imbalance for long-term reliability. This battery is designed as a direct replacement for YTX20-size batteries. Always verify compatibility before purchase. Review: Bike fires right up - Bought this for my 2000 HD Softail standard with a big bore kit. Bike has always been hard starting and blown a few starters since big bore; put a all balls starter in with a 400 CCA lithium battery 5 years ago which made a difference but was still straining to start. Bought the Antigravity ATX20 HD says 780 CCA but they send you the 900 CCA, fit right in my bike batt read 368 on ohm meter, after charging overnight read over 390. Turned on the gas pulled the choke hit the starter and BAM fired right up no strain no hesitation. Ohm reading 428 running, this bike has never started this easy. after riding fires right up every time. Super happy with this battery hope it last as long as my old lithium. Review: Outstanding - Needed a strong upgrade battery for a Custom Motorcycle with a high Performance S&S 107cu in motor Dealer that had the bike had a hard time starting the bike After doing my homework this battery did the trick Upgraded a regular 310ca battery to Antigravity Lithium ion 900 cold cranking amp battery Fits in the battery area perfect ## Features - ⚡ 780 CRANKING AMPS – MAX POWER Delivers high-output starting power for large touring motorcycles, V-twins, and high-demand applications. - 🔄 DIRECT YTX20 REPLACEMENT Replaces YTX20, YTX20-BS, YTX20L, GYZ20 and similar OEM battery sizes. Verify battery size before purchase. - 🛡 FULL BMS PROTECTION Built-in Battery Management System protects against over-charge, over-discharge, short circuit, and temperature issues. - 🔋 HIGH CAPACITY – 15Ah TRUE LITHIUM More usable energy than standard lithium batteries, ideal for heavily accessorized bikes and long runtime needs. - 🪶 LIGHTWEIGHT PERFORMANCE Only 5.18 lbs—significantly lighter than lead-acid while improving performance and handling. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B081S257XK | | Automotive Fit Type | Vehicle Specific Fit | | Battery Cell Composition | Lithium | | Battery Type | Lithium | | Best Sellers Rank | #242,505 in Automotive ( See Top 100 in Automotive ) #456 in Powersports Batteries | | Brand | Antigravity Batteries | | Brand Name | Antigravity Batteries | | Compatible with Vehicle Type | ATV, Motorcycle, Scooter, Snowmobile, UTV | | Customer Reviews | 4.4 out of 5 stars 24 Reviews | | Global Trade Identification Number | 00711811703799 | | Included Components | Batteries | | Item Dimensions D x W x H | 6.9"D x 6.1"W x 3.4"H | | Item Type Name | Batteries | | Item Weight | 5.2 pounds | | Manufacturer | Antigravity Batteries | | Manufacturer Part Number | AG-ATX20-HD | | Manufacturer Warranty Description | Manufacturer warranty | | Model Number | AG-ATX20-HD | | Number Of Cells | 4 | | Number of Items | 1 | | Product Dimensions | 6.9"D x 6.1"W x 3.4"H | | Terminal | Quad Terminal | | UPC | 711811703799 | | Vehicle Service Type | ATV, Motorcycle, Scooter, Snowmobile, UTV | | Voltage | 12.8 volts | ## Product Details - **Automotive Fit Type:** Vehicle Specific Fit - **Battery Cell Composition:** Lithium - **Brand:** Antigravity Batteries - **Item Weight:** 5.18 Pounds - **Manufacturer:** Antigravity Batteries - **Number Of Cells:** 4 - **Product Dimensions:** 6.9"D x 6.1"W x 3.4"H - **Terminal:** Quad Terminal - **Vehicle Service Type:** ATV, Motorcycle, Scooter, Snowmobile, UTV - **Voltage:** 12.8 Volts ## Images ![Antigravity ATX20-HD Lithium Motorcycle Battery, 780 Cranking Amps, 15Ah, YTX20 Replacement, Heavy Duty 12V Powersport Battery for Touring Motorcycles, ATV, UTV - Image 1](https://m.media-amazon.com/images/I/61FezKvwyZL.jpg) ## Questions & Answers **Q: Do you require a specific type of charger for these batteries?** A: Thank you for your question. Yes, you will want to use one of our lithium Ion chargers and never use a standard lead acid charger. Thanks again, your Friends at Antigravity Batteries **Q: Where are all the reviews? I was sold on buying this battery until i scrolled down and saw there are no questions and no reviews** A: Give it a try. I did. Can't wait to get out and ride on my motorcycle **Q: Will this fit in a 2015 ultralow Harley Davison** A: Hi Danny and thank you for your inquiry. This would likely not fit your application and be too long in regards to length for the stock location. The ATX30-RS and ATX30-HD would be the recommended sizes. Thank you and please feel free to contact us if you have any other questions **Q: Can this battery be laid on its' side?** A: I'm sure it can ## Customer Reviews ### ⭐⭐⭐⭐⭐ Bike fires right up *by T***E on September 21, 2024* Bought this for my 2000 HD Softail standard with a big bore kit. Bike has always been hard starting and blown a few starters since big bore; put a all balls starter in with a 400 CCA lithium battery 5 years ago which made a difference but was still straining to start. Bought the Antigravity ATX20 HD says 780 CCA but they send you the 900 CCA, fit right in my bike batt read 368 on ohm meter, after charging overnight read over 390. Turned on the gas pulled the choke hit the starter and BAM fired right up no strain no hesitation. Ohm reading 428 running, this bike has never started this easy. after riding fires right up every time. Super happy with this battery hope it last as long as my old lithium. ### ⭐⭐⭐⭐⭐ Outstanding *by G***C on February 9, 2024* Needed a strong upgrade battery for a Custom Motorcycle with a high Performance S&S 107cu in motor Dealer that had the bike had a hard time starting the bike After doing my homework this battery did the trick Upgraded a regular 310ca battery to Antigravity Lithium ion 900 cold cranking amp battery Fits in the battery area perfect ### ⭐⭐⭐⭐⭐ This is the BEST battery I have ever purchased! *by B***E on April 1, 2023* I have an S&S V111 with a Balls Out starter. This bike requires a lot of battery power to crank over and start. I was going through batteries about every year for the last 8 years. I have tried AGM and Lead acid. This battery is incredible!! I can't wait to see how many years it lasts. ## Frequently Bought Together - Antigravity ATX20-HD. Heavy Duty High Performance Lithium Motorcycle and Powersport Battery, 12V 15Ah, Group 20, ATV, Quad, UTV, Jet Ski, PWC, Lawn Mower, Generator - Honda, Harley, Victory, Indian - CTEK 56-926 Lithium US | Fully Automatic Lithium Ion Phosphate LiFePO4 Battery Charger | 5.0Ah - 60Ah | Maintenance Charging up to 120Ah --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/334846881-antigravity-atx20-hd-lithium-motorcycle-battery-780-cranking-amps-15ah](https://www.desertcart.us/products/334846881-antigravity-atx20-hd-lithium-motorcycle-battery-780-cranking-amps-15ah) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-28*