{"product_id":"antigravity-ytx20-high-power-lithium-battery","title":"1984-2025 Harley-Davidson Softail\/Dyna \u0026 Indian Antigravity ATX20-HD Heavy Duty Lithium Battery 780 CA","description":"\u003cp\u003eThe Antigravity ATX20-HD is the Heavy Duty version of the YTX20-size lithium battery, built for bikes that need more usable capacity: accessory-heavy baggers, audio builds, and touring bikes that sit between rides. It carries a larger cell pack than standard lithium batteries in the same case, delivering 780 cranking amps and 30Ah PbEq capacity.\u003c\/p\u003e\u003cp\u003eUnlike the RE-START models, the ATX20-HD allows a deeper level of discharge for more usable capacity and sustained cranking power. A voltage indicator button on the case gives a quick charge-level check, and the Bluetooth Battery Tracker adds remote monitoring from a phone.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e780 cranking amps with 30Ah PbEq capacity, roughly double the capacity of comparable lithium batteries in this case size\u003c\/li\u003e\n\u003cli\u003eDeeper allowable discharge than RE-START models for more usable energy\u003c\/li\u003e\n\u003cli\u003eFull battery management system with over-discharge, over-charge, and thermal protection plus real-time cell balancing\u003c\/li\u003e\n\u003cli\u003eOn-case voltage indicator test button\u003c\/li\u003e\n\u003cli\u003eStandard YTX20 case, drop-in fit with quad-terminal design\u003c\/li\u003e\n\u003cli\u003eLiFePO4 chemistry with very low self-discharge\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCharge only with a lithium-compatible (LiFePO4) charger such as the Antigravity SC-2 or SC-4 Super-Charger. Lead\/acid chargers, especially those with desulfation or recondition modes, can damage lithium batteries.\u003c\/li\u003e\n\u003cli\u003eNo built-in RE-START jump starting on this model; keep a maintainer connected during long storage or add the Bluetooth Battery Tracker to watch voltage remotely.\u003c\/li\u003e\n\u003cli\u003eCheck state of charge every 4 to 6 months if the bike carries parasitic drains such as alarms, trackers, or always-on accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVoltage: 12V\u003c\/li\u003e\n\u003cli\u003eCranking amps: 780 CA\u003c\/li\u003e\n\u003cli\u003eCapacity: 30Ah PbEq (15Ah actual), 192Wh\u003c\/li\u003e\n\u003cli\u003eCase: YTX20\u003c\/li\u003e\n\u003cli\u003eChemistry: LiFePO4 with full BMS\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDirect replacement for the YTX15, YTX20, YTX20-BS, YTX20L, YTX20L-BS, YTX20H, YTX20H-BS, YTX20HL, YTX20HL-BS, YIX20HL, GYZ20H, GYZ20L, and GYZ20HL battery positions. Covers the Harley-Davidson 65989-90B and 65991-82B series batteries in Softail, Dyna, and 1979-2003 Sportster models, and the Indian OEM 4081841 battery in 2014-2024 Thunderstroke and Challenger-platform models.\u003c\/p\u003e","brand":"Antigravity Batteries","offers":[{"title":"Default Title","offer_id":54303108497721,"sku":"ANTAG-ATX20-HD","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/1557\/3561\/files\/3866d30ff8e86e3921f09dda7f5f5192.jpg?v=1785806925","url":"https:\/\/tires-fast.com\/products\/antigravity-ytx20-high-power-lithium-battery","provider":"Tires Fast","version":"1.0","type":"link"}