Antigravity Batteries ATX20-RS RE-START Lithium Ion Powersports Battery 680CA (MPN: AG-ATX20-RS)

Shave substantial amounts of dead weight from your chassis tray while completely eliminating the risk of being stranded by an accidental power drain. The Antigravity Batteries ATX20-RS RE-START Lithium Ion Powersports Battery 680CA is a drop-in high-performance replacement starter cell precision-crafted to maximize mechanical leverage over heavy, inefficient factory electrical configurations [MPN: AG-ATX20-RS]. Generating an incredible 680 cranking amps, this ultra-lightweight LiFePO4 battery safely replaces cumbersome lead-acid options to trim roughly 11 lbs (5.0 kg) off your machine, instantly sharpening steering response, braking efficiency, and power-to-weight ratios. If an electrical accessory, lighting kit, or ignition switch is accidentally left running, the integrated Battery Management System automatically puts the cell into a sleep mode before the core energy depletes completely, reserving an isolated pocket of power to turn over your motor at the push of a wireless remote keyfob or the on-casing manual button.

Universal Battery Specification Parameters

This premium motorsports energy storage module conforms precisely to standard YTX20 dimensional envelopes, incorporating a highly versatile 4-terminal design that supports both left and right-side negative or positive configuration layouts for effortless cable routing. The rugged interior construction safely absorbs violent acceleration spikes and heavy off-road track vibrations while remaining completely sealed against liquid leakage or corrosive gassing. It can confidently maintain a full shelf charge for up to one entire year, provided the host machine is completely free of active background parasitic drains. To maintain long-term cell health and avoid terminal arcing, installers must confirm that the vehicle’s alternator or stator charging system is fully operational and regulated below a maximum continuous safety threshold of 14.8V, utilizing only dedicated LiFePO4 lithium smart chargers maintaining a regulated top-off voltage profile between 14.4V and 14.6V.

Harley-Davidson Softail & Dyna Platforms

• Harley-Davidson Heritage Softail / Fat Boy / Slim / Breakout (FLST / FXST Lineages) — 1991 to 2027
• Harley-Davidson Dyna Glide / Wide Glide / Low Rider / Super Glide (FXD / FXDWG / FXDL) — 1991 to 2017
• Harley-Davidson Sportster 883 / 1200 (XL / XLH Series) — 1997 to 2003

Heavyweight Touring Cruisers & Sport Touring Lineages

• Honda GL1800 Gold Wing / Valkyrie Performance Platforms — 2001 to 2027
• Victory Vegas / Kingpin / Hammer / Jackpot / High-Ball / Gunner — 2003 to 2017
• Yamaha XV1600 / XV1700 Road Star / Wild Star Cruisers — 1999 to 2014

Polaris & Can-Am Side-by-Side & ATV Architectures

• Polaris Sportsman 500 / 570 / 800 / 850 / 1000 All-Terrain Vehicles — 2004 to 2027
• Can-Am Outlander 500 / 570 / 650 / 800 / 850 / 1000 (Gen 1 & Gen 2 G2 Platforms) — 2006 to 2027
• Can-Am Renegade 500 / 570 / 800 / 850 / 1000 Performance ATVs — 2007 to 2027

Other Applications

This drop-in high-power configuration matches the standardized dimensions of conventional YTX20, YTX20L, YTX20H, YTX20-BS, YTX20HL-BS, and GYZ20HL lead-acid battery footprint locations. It acts as the ultimate performance upgrade for a wide spectrum of heavyweight cruiser motorcycles, touring bikes, utility UTV side-by-sides, full-size sport ATVs, snowmobiles, and personal watercraft requiring massive initial torque to push past high internal engine compression. Additionally, its exceptional power-to-weight ratio allows it to safely crank high-performance racing car applications (such as sports cars or track day vehicles) where extreme weight reduction in a compact size format is required. It can be securely mounted in any orientation layout.

CRITICAL INSTALLATION AND SAFETY NOTES: Always execute proper terminal separation sequences by disconnecting the ground negative cable first during removal and connecting the ground negative cable last during final installation to avoid hazardous chassis shorts. Never utilize traditional workshop lead-acid battery chargers or tenders that feature an automatic or manual high-voltage desulfation pulse mode, as this process will instantly destroy the internal lithium circuit and void all factory warranties. Ensure the battery module is snugly secured in your machine's tray using the included adhesive-backed high-density foam spacers to eliminate physical rattling, and check that all terminal fastening bolts are fully torque-seated to prevent intermittent cranking failures.

Technical Specifications

Why Riders Shop Mad Lads Moto

• We ensure completely reliable fitment data by cross-referencing factory parts microfiche. Your safety on the road or trail relies on getting the exact right hardware without any guessing.
• Our warehouse processes orders rapidly to minimize your machine's downtime. We ship your critical replacement parts out quickly so you can return to riding.
• Every rider receives active support from genuine powersports specialists. You can contact the expert team at Mad Lads Moto to get answers to technical plumbing, electrical, and hardware inquiries.
• We stand behind our catalog with simple, hassle-free returns. Shopping with us is entirely straightforward and secure from checkout to delivery.