Antigravity ATX20-RS RE-START Lithium Battery

The Antigravity ATX20-RS is a high-power, lightweight Lithium-Ion battery designed for riders who need maximum reliability. Its built-in RE-START Technology gives you a jump-start option right inside the battery, so you never get stranded with a dead battery again. You can directly replace any YTX20-series lead-acid battery with a major upgrade in power, weight, and lifespan.

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This battery delivers strong cranking performance, extremely low weight, and class-leading safety thanks to a full BMS and LiFePO4 chemistry.

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Key Specs

• Case size: 6.89 x 3.4 x 5.12 in (L x W x H)

• 680 Cranking Amps

• 20Ah PbEq / 10Ah Actual / 128Wh

• Weight: 3.8 lbs

• LiFePO4 chemistry with full BMS protection

• Compatible with 10 OEM sizes

• Mounts in any orientation

• Not for automotive use (Race-only applications on request)

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Why Choose the ATX20-RS

This battery gives you more starting power, longer life, and far less weight than any stock lead-acid unit. The RE-START feature is the biggest advantage. When voltage drops too low, the battery goes into sleep mode. You simply activate RE-START and crank the engine — a built-in safety net that protects you from being stuck on the side of the road.

If the battery is hard to reach, pair it with the optional RE-START Remote. It plugs into your existing SAE pigtail, letting you activate the jump-start feature without removing seats or panels.

For charging, Antigravity SUPER-CHARGERS offer fast, safe recovery with full compatibility.

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Best Uses

• Direct replacement for all OEM lead-acid batteries in the same size class

• Ideal for motorcycles up to 2200cc

• Handles large high-performance V-Twin engines

• Excellent for touring, adventure, and performance bikes that need more power and higher Amp-Hour capacity

• Not for personal watercraft

• Not for automotive applications (race-only in some cases)

If you need more capacity, consider the ATX20-HD version.

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Replaces These Battery Sizes

YTX / YIX / GYZ Series:
YTX15, YTX15L, YTX15L-BS
YTX20, YTX20-BS
YTX20L, YTX20L-BS
YTX20H, YTX20H-BS
YTX20HL, YTX20HL-BS
YIX20HL
GYZ20H, GYZ20L, GYZ20HL

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Fitment Warning for Large V-Twin Builds

For custom V-Twin engines over 103 cubic inches, or for high-compression and heavily modified motors:
Do NOT use the ATX20-RS.

The RE-START system is not designed for the extremely high current draw of these builds. Instead, use:

• YTX20

• YTX12-24

• YTX12-20

• V-10

These models provide the sustained current required for large V-Twin setups.