The Antigravity AG-1201 is the mid-size Small Case battery: 360 cranking amps from a 2.25 pound package measuring 4.5 by 3.25 by 4.25 inches. It replaces a typical 12Ah lead/acid battery with up to 7 pounds of weight savings while cranking noticeably harder.

Antigravity rates it for custom builds up to 1200cc; high-performance motors in that range should step up to the AG-1601.

Features

• 360 cranking amps at 2.25 lbs
• 4.5 x 3.25 x 4.25 in, the compact choice for electric-start customs
• Replaces a typical 12Ah lead/acid battery with up to 7 lbs saved
• Rated for custom builds up to 1200cc
• Mounts in any orientation; vibration resistant
• LiFePO4 chemistry; holds a charge up to a year without parasitic drains

What's Included

• AG-1201 lithium battery
• Adhesive-backed installation foam

Installation Notes

• Small Case batteries use balance charging without an onboard BMS; Antigravity positions them for race, off-road, and custom applications.
• On classic bikes from the mid-1980s and earlier, update the charging system to a modern voltage regulator before running a lithium battery; a failing regulator can overcharge and damage it.
• Charge 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.

Specifications

• Voltage: 12V
• Cranking amps: 360 CA
• Dimensions: 4.5 x 3.25 x 4.25 in (L x W x H)
• Weight: 2.25 lbs
• Chemistry: LiFePO4 (balance charging, no onboard BMS)

Fitment

Sold as a compact power cell for custom and race builds rather than against a factory fitment chart. Mount in any orientation with the included adhesive foam, in a battery box, or tucked into the frame; confirm dimensions and cranking requirements against your build.