Antigravity ATX20-RS RE-START Lithium Battery Harley SOFTAIL (Select Models 2000-Present)

Description

Never get stranded with a dead battery again. The Antigravity ATX20-RS is a high-power, lightweight lithium-ion battery built with groundbreaking RE-START Technology — the world’s first battery with built-in jump-starting. Left your ignition on? No problem. The ATX20-RS intelligently monitors its own status, and if it senses over-discharge, it puts itself into sleep mode while saving enough reserve energy to get you started again. Just press the RE-START button on the battery, fire up your bike, and ride away.

The ATX20-RS is a direct replacement for the popular YTX20 series lead/acid battery, making it a drop-in upgrade for many Harley-Davidson Softail, Dyna, and other V-Twin models. At a massive 680 cranking amps and just 3.8 pounds — up to 70% lighter than an equivalent lead/acid battery — you’re shedding serious weight while gaining starting power, better handling, and even shorter braking distances.

Features:

• RE-START Technology — World’s first battery with built-in jump-starting. Press the button on the battery and go, or pair it with the RE-START Remote accessory to activate it through your SAE charging pigtail without ever removing your seat or side panels.
• Full Battery Management System (BMS) — World’s first powersport battery with complete over-discharge protection, over-charge protection, thermal protection, and cell balancing
• 680 Cranking Amps — Up to 2X the cranking amps of similar-sized lead/acid batteries for stronger starts and higher voltage at start-up
• Ultra Lightweight — Just 3.8 lbs, up to 70% lighter than equivalent lead/acid batteries
• Longer Life — Over twice the lifecycle of lead/acid and other lithium batteries thanks to the full BMS
• 4-Terminal Design — Fits right or left hand, negative or positive connections for easy installation in nearly any bike
• Low Self-Discharge — Holds a charge in storage up to 3X longer than lead/acid (check every 4-6 months, or sooner with parasitic drains like alarms, GPS, or heated grips)
• Safest Lithium Chemistry — LiFePO4 technology with no acid or heavy metals like lead, cadmium, or mercury
• Shock & Vibration Resistant — Built tough enough for racing
• Mount in Any Orientation — No liquids to spill or drain

Specifications:

• Cranking Amps: 680 CA
• Amp Hours: 20Ah (PbEq) / 10Ah (Actual) / 128Wh
• Weight: 3.8 lbs
• Case Size: 6.8″ x 3.4″ x 5.1″ (LxWxH) — YTX20 case

Direct OEM Replacement For:

YTX15, YTX15L, YTX15L-BS, YTX20, YTX20-BS, YTX20L, YTX20L-BS, YTX20H, YTX20H-BS, YTX20HL, YTX20HL-BS, YIX20HL, GYZ20H, GYZ20L, GYZ20HL

Best Uses:

• Direct replacement for all OEM lead/acid batteries of the same size
• Excellent for everyday use in bikes up to 2200cc
• Great for large, high-performance V-Twin motors
• Ideal for touring and adventure bikes where extreme power and larger amp hour capacity are needed

Important Notes:

• Large V-Twin Applications: For custom V-Twin builds over 103 cubic inches, or high-compression/modified motors, the RE-START version is not recommended due to the extremely high current draw of these motors. Contact us about the standard YTX20, YTX12-24, YTX12-20, or V-10 models instead.
• Use only a lithium-specific charger with this battery — never a standard lead/acid charger
• Over-charge protection will not protect against a faulty or aging voltage regulator spiking high voltage to the battery
• Not for use with personal watercraft (PWC)
• Not for use in street automotive applications. Contact us about potential “Race Only” automotive use.

Part Numbers:
Manufacturer: AG-ATX20-RS
P/N: antAG-ATX20-RS/58-7007