Antigravity Batteries AG-401 Lithium Small Case 12V Powersports Battery – Ultra-Lightweight 15.2 oz, 120 Cranking Amps, 6Ah Pb-Eq (2.6Ah Actual), No BMS – Motorcycles, Dirt Bikes, ATVs

The Antigravity Batteries AG-401 is an ultra-compact small-case lithium motorsports battery designed for riders and builders who need maximum power in the smallest, lightest package possible. Weighing only 15.2 ounces and measuring 4.375″ × 1.37″ × 3.75″, it is ideal for motorcycles, dirt bikes, ATVs, and performance custom builds where weight and space are extremely limited.The AG-401 outputs 120 Cranking Amps and features a 6 Ah Pb-Eq (2.6 Ah actual) / 33 Wh lithium cell configuration, giving reliable starting power for single- and twin-cylinder motorcycles up to 250cc for everyday riding, or inline-four motors up to 600cc for racing applications.No BMS (Battery Management System): This model is intentionally built without a BMS, making it a preferred choice among racers, tuners, and custom builders who want a pure, lightweight lithium battery without electronic protection circuitry. This allows direct power delivery and is ideal for controlled performance environments.The AG-401 uses all-brass terminals for maximum conductivity and includes adhesive-backed foam pads for flexible mounting options. It is fully sealed and can be installed in any orientation. With no acid and no maintenance required, it is far safer and lighter than traditional lead-acid batteries.Note: Use only lithium-specific motorsport chargers. Not intended for automobiles or watercraft.

• Ultra-lightweight small-case lithium design — just 15.2 oz with a compact 4.375" × 1.37" × 3.75" size; ideal for motorcycles, dirt bikes, ATVs, and custom performance builds.
• Delivers strong starting performance with 120 Cranking Amps and 6 Ah Pb-Eq (2.6 Ah actual / 33 Wh) — suitable for bikes up to 250cc for street use and up to 600cc for racing applications.
• No BMS (Battery Management System) — preferred by racers and performance builders who want a direct, lightweight power source without electronic protection circuitry.
• Durable construction with all-brass terminals; includes foam mounting pads and can be installed in any orientation.
• Maintenance-free lithium power — no acid, no spills, no corrosion, and significantly reduced weight compared to lead-acid batteries.