Antigravity ATX20 12V Motorcycle Battery 680CA (w/ Re-Start)

Antigravity ATX20 12V Motorcycle Battery 680CA w/ Re-Start: 680 Cranking Amps for Big Twins, With a Jump Start Built In

The YTX20 is the big-twin case. Every Harley Softail since 1991, the Dynas, the V-Rods, Indian's Chieftain and Springfield, Triumph's Rocket III: they all run a YTX20L or YTX20HL, and they all crank hard. The ATX20 RE-START drops into that tray at 3.8 lbs with 680 cranking amps, then adds the thing lead acid never could: a jump start built into the battery.

Antigravity's BMS watches the charge. If a tracker, alarm or a month in the garage drains the bike, the battery puts itself to sleep before it goes flat and keeps a reserve. Press the button on top, hit the starter, ride. No cables, no charger, no truck.

Why the ATX20 belongs in a big twin

• 680 cranking amps spins a 96, 103 or 107 cubic-inch V-twin hard, hot or cold
• RE-START reserve with a push-button jump start: never stranded by a parasitic drain again
• 3.8 lbs replaces a lead-acid brick that weighs close to 14, off the top of the chassis
• Replaces YTX20, YTX20L-BS, YTX20H-BS, YTX20HL-BS, YTX15L-BS, YIX20HL and the GYZ20 family (15 OEM sizes)
• 4-terminal design fits left- or right-hand positive trays; mount in any orientation
• Full BMS: over-charge, over-discharge, thermal protection, cell balancing

Antigravity RE-START Battery Video Review

ATX20 RE-START Specs for Nerds

Fits stock and lightly modified V-twins, cruisers and touring bikes on the YTX20 case. Antigravity does not recommend the RE-START version for modified or high-compression motors over 103 cubic inches; those builds want the ATX20-HD. Check your OEM code against the list above, and if you are not sure, we will confirm fitment before you order.

Backed by Antigravity's 3-year powersports warranty. Questions about fit or rigging? A real USA battery tech picks up at 1-800-LBZ-POWR, Mon-Fri 9a-6p EST.