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Rectangular lithium battery, black plastic case, restart button on top, 5.9 by 2.75 by 5.12 inches, 2.3 lbs

Antigravity Batteries

Antigravity AT12BS RE-START Lithium Battery 12Ah 2.3 lbs

SKU CH-YE4Q-Y5BCA

Lightweight 12 Ah lithium battery with built-in jump-starting, 360 cranking amps and 2.3 lb weight

  • Product typeElectronics
  • Built-in jump-start prevents stranded rides with RE-START button
  • Weighs only 2.3 lbs for ultra-light installation
  • Delivers 360 cranking amps for reliable engine starts
  • Full BMS with LiFePO4 chemistry protects against over-charge and over-discharge
  • Mounts in any orientation to fit tight spaces

Antigravity AT12BS RE-START Lithium Battery

The Antigravity AT12BS RE-START is a lightweight lithium-ion battery designed to replace the OEM lead-acid YT12-BS unit in motorcycles and powersport vehicles. It weighs 2.3 lbs and delivers 360 cranking amps for reliable starting power. The built-in RE-START technology monitors voltage and reserves enough energy to jump-start the vehicle via a button on the battery case. A full battery management system provides low-voltage cut-off, over-charge, over-discharge and thermal protection with cell balancing.

Practical limits of the RE-START interface

The RE-START function activates only when the battery detects a critically low state of charge before total discharge. It preserves a single reserve start cycle, so the button cannot be used repeatedly without recharging the unit. The battery offers 12 amp-hours lead-equivalent capacity and 6.1 Ah actual capacity, which limits accessory runtime compared with higher-capacity lead-acid alternatives. It fits the YT12-BS case footprint of 5.9 x 2.75 x 5.12 inches and can be mounted in any orientation.

Specification that decides fit

The 12 Ah lead-equivalent rating determines whether this battery meets the energy requirements of your specific motorcycle or powersport application. If the vehicle's electrical system demands more reserve capacity for extended accessory use or frequent starts without charging, the 6.1 Ah actual capacity may be insufficient. Buyers who need greater energy storage should consider the heavy-duty version of this model.

How it compares

Measured against everything we stock in Bike Lights, Racks & Accessories, at today’s prices. Recalculated every night.

Price $203.99
Pricier than about 95% of the 211 comparable items (median $25.99).

Specifications

Product
Product typeElectronics

Questions about this item

Should I choose the 12 Ah or 6.1 Ah figure when comparing this battery to my old lead-acid unit?

Use the 12 Ah PbEq rating for direct comparison with the YT12-BS it replaces; the 6.1 Ah is the actual lithium capacity.

What does the 360 cranking amps figure deliver when I press the starter on a cold morning?

It provides a strong burst of 360 cranking amps to turn over powersport engines reliably in low temperatures.

How does the RE-START button interact with the battery management system when the voltage drops too low?

The BMS puts the pack to sleep before full discharge; pressing the button wakes it with enough reserve energy to start the engine.

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