Sale

AntiGravity

ATX-12-HD ReStart Lithium-Ion Battery

$284.99 $256.49 Save $28.50

SKU: AG-ATX12-HD-RS

In Stock
In Stock
Ships by Jul 30
Free Shipping
30 Days Return

Description

The Antigravity ATX-12-HD ReStart is a high-power, lightweight lithium-ion battery engineered to replace heavy lead-acid YTX12 batteries in many motorcycles and powersport vehicles. It boasts the world's first Re-Start Technology, which intelligently monitors battery status and allows for emergency jump-starts directly from the battery itself if it becomes over-discharged, preventing you from being stranded. This Heavy Duty model offers enhanced capacity and cranking power compared to the standard ATX-12-RS. This battery features a full Battery Management System (BMS) for over-discharge, over-charge, and thermal protections, along with real-time cell balancing, contributing to a longer lifecycle than traditional lead-acid batteries. With 480 cranking amps and 16 Ah (PbEq), it provides better starting performance and higher voltage at start-up. The ATX-12-HD ReStart offers a new 4-terminal design for flexible installation, accommodating various terminal locations. It is shock and vibration resistant, suitable for racing applications, and can be mounted in any orientation as it contains no liquids. This battery also has a low self-discharge rate, allowing for longer storage periods, though parasitic drains should be monitored. Important considerations include: this battery is not for automotive applications and not for use with PWC. For custom V-Twin applications over 103 cubic inches with high compression or modified motors, the RE-START version is not recommended; alternative models are available. It's crucial to confirm compatibility and specs before ordering. Antigravity suggests using a modern voltage regulator (mid-1980s and newer) as damaged regulators can cause overcharging and damage the battery.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAntiGravity
Part NumberAG-ATX12-HD-RS
CategoryIgnitions and Electrical

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy