Antigravity Batteries H8 / Group-49 RE-START Lithium Battery (Wireless Emergency Restart / Full BMS)
The Antigravity H8/Group-49 is a high-performance automotive lithium battery that is a direct replacement for standard H8/Group-49 sizes. With its built-in RE-START (wireless jump-start) feature, you can restart your engine even if the battery is dead just by pressing a button on the included key fob remote. Furthermore, it is equipped with a full BMS (protection against over-discharge, over-charge, short-circuits, and overheating, as well as cell balancing) for significantly improved safety, lifespan, and reliability.
It offers a weight reduction of up to approx. 70% (approx. 16–25 kg) compared to standard lead-acid batteries, improving acceleration, braking, and handling. It is the ideal lithium battery for street cars, performance cars, and high-power vehicles.
Specifications (H8 / Group-49)
Case Size: Approx. 35.5 × 18 × 19 cm (Length × Width × Height)
Capacity (Selectable): 60Ah or 80Ah
Cranking Performance:
60Ah: 1800CA
80Ah: Approx. 2000CA
Weight:
H8-60-RS: Approx. 8.7kg (19.25 lbs)
H8-80-RS: Approx. 11.7kg (25.75 lbs)
Chemistry: LiFePO4
Management System: Full BMS (Over-charge / Over-discharge / Short-circuit / Thermal protection / Cell balancing)
RE-START Feature: Wireless emergency restart via included remote
Terminals: M8 × 1.25 threaded terminals
Features
With the wireless RE-START feature, there is no need to open the hood when the battery dies. The full BMS automatically controls over-discharge, over-charge, thermal protection, and cell balancing to maximize safety and battery life.
It is significantly lighter than standard lead-acid batteries, improving acceleration, braking, and handling response.
High starting performance capable of supporting 900+ horsepower vehicles.
The leak-proof, gas-free, and vibration/impact-resistant structure makes it suitable for both race cars and daily drivers. The battery can be mounted in any orientation to fit various vehicle layouts.
Recommended Vehicles
General European and American vehicles using H8 / Group-49
Ferrari (80Ah model recommended, especially for vehicles with extensive electronic systems)
BMW / Audi / Porsche / Mercedes-AMG
Lamborghini / Maserati
Dodge Challenger / Charger / Viper
Chevrolet Camaro / Corvette
VW, Jeep, RAM, and many more
Available in 60Ah and 80Ah models. Please choose based on your vehicle's required capacity and maintenance needs.
*The 80Ah model is typically used for Ferraris.
*If you are unsure about compatibility, please let us know your vehicle model and year.
Contents
Lithium battery unit
RE-START wireless key fob
Installation terminal bolts
Instruction manual
Warranty
3-year warranty (per manufacturer terms)
Before You Order
○ Import Consumption Tax
At Shafto-ya Shopping, we pay the import consumption tax incurred during customs clearance, so there are no additional charges beyond the total amount paid at checkout.
○ Compatibility Check
Our product database is based primarily on North American vehicles (USDM). Please verify compatibility with Japanese market vehicles (JDM) before ordering. (If you are unsure if a listed product fits your vehicle, please feel free to contact us. Our support team will be happy to look into it for you.)
If an order is placed without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if our website filters products by year, make, and model, it does not guarantee a direct bolt-on fit for Japanese market models.
All product information is translated using software, which may result in confusing phrasing. If you have any questions, please contact us before ordering.
○ Shipping Information
Shipping costs are paid at checkout. Shipping estimates are calculated automatically when you enter your delivery address at checkout. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the automated estimate. In such cases, we will contact you via email.
All products are generally shipped internationally from our U.S. warehouse. Unlike domestic Japanese shipping, please allow 7 to 14 days for international delivery. If you are in a hurry, please contact us for a delivery estimate in advance. Note that all items are shipped via air freight; surface mail is not used.
○ Japanese Vehicle Inspection (Shaken) Compatibility
Our products are designed and manufactured outside of Japan. Please note that they do not necessarily comply with Japanese vehicle inspection (Shaken) standards, and we cannot provide documents such as strength calculation reports. Therefore, all parts are sold for "circuit use, private land, or off-road use only," and their installation and use are at your own risk.
○ Warranty
Please inspect the contents immediately upon receipt. As all products are shipped internationally, there is a possibility of shipping damage to packaging or products. We will only provide returns, refunds, or exchanges for products with shipping damage, defects, or incorrect items if you contact us within 7 days of receipt. All warranty matters must be handled directly through us. Please understand that we cannot coordinate warranties through other companies or distributors located in Japan.