The Antigravity AT12BS-HD RE-START Lithium Battery is a high-power lithium-ion battery designed as a replacement for the YT12-BS size battery.
This model is a heavy-duty version of the Antigravity AT12-BS-RS (standard model), optimized for motorcycles requiring higher capacity and starting performance.
It also features our RE-START technology, which automatically puts the battery into sleep mode when it detects it is getting too low, leaving enough energy to start your engine.
In the event of a dead battery, simply press the button on top of the battery to restart your engine.
Internally, it features a full Battery Management System (BMS) that automatically protects against over-discharge, over-charge, heat, and includes cell balancing, significantly improving safety and battery life.
It weighs only approximately 1.31 kg while providing a powerful 480 cranking amps of starting performance.
Dimensions
Approx. 15.0 × 7.0 × 13.0 cm (L × W × H)
Specifications
Starting Current: 480 Cranking Amps
Capacity: 16Ah (Lead-Acid Equivalent) / 8Ah Actual Capacity / 102Wh
Weight: Approx. 1.31kg
Mounting Orientation: Can be mounted in any orientation (non-spillable / LiFePO4)
Part Number: AG-AT12BS-HD-RS
Compatible Battery Sizes
YT12-BS
YT12B / YT12B-BS
YT14-BS
YT14B-BS
Recommended Uses
Up to 1500cc Street / Touring / Off-road motorcycles
High-compression / Large-displacement engines
Custom engines, tuned vehicles, and race vehicles
Users requiring higher starting performance and capacity
Caution
Not for use in automobiles.
For motorcycles from 1990 or older, checking or replacing the regulator is recommended as it may cause overvoltage due to degradation.
Always use a lithium-compatible charger for charging (do not use chargers for lead-acid batteries).
Before placing an order
〇 Regarding Import Duties
At Shafutoya Shopping Site, we pay the import duties incurred during importation on your behalf, so you will not be charged any additional fees beyond the total amount paid at checkout.
〇Confirmation of Compatibility
As our product database is based on North American vehicles (USDM), please confirm compatibility with Japanese domestic vehicles (JDM) before ordering. (If you are unsure if a listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to assist you.)
If you order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if items are sorted by selecting the year, manufacturer, and vehicle model in the tabs on our homepage, it does not guarantee that the product will fit Japanese-model vehicles without modification.
All products have been translated into Japanese using translation software. Due to the possibility of confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Shipping
Shipping costs are paid at the time of settlement. An estimate for shipping costs will be calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, the automatically calculated shipping cost may sometimes differ significantly from the actual cost. In such cases, we will contact you individually by email.
Basically, all products are shipped internationally from our U.S. warehouse. Unlike domestic shipping in Japan, international shipping takes approximately 7 to 14 days, so please allow plenty of time for your order. If you are in a hurry, please inquire about delivery times in advance. All products are transported via air freight. They are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Please note that all products we handle are designed and manufactured outside of Japan. They are not compliant with the "Japanese Vehicle Inspection System," and we cannot provide strength evaluation documents or similar paperwork for these systems. Therefore, all parts are sold for "circuit, private property, and off-road use only," and any installation or use is at your own risk.
○ Regarding Warranty
Please check the contents immediately upon receipt of your product. Since all products are shipped internationally from outside Japan, there may be cases where packaging or products are damaged during transit. We will handle returns, refunds, or exchanges only if you contact us within 7 days of receipt for items that are damaged in transit, defective, or incorrect. Please note that for products sold through our company, warranty claims will be handled "exclusively through us." We do not provide support through other companies or agencies located within Japan.