High Capacity Jump Starter for Gasoline & Diesel Engines

Inspired by innovations and our own adventures, AstroAI was born with a mission to ensure the most adventurous experience possible. Whether you're gearing up for a road trip or planning an off-road ride, our rugged high-performance jump starters power you up for all of life's adventures.

To achieve "Power Beyond Compare", the durable S8 Ultra Jump Starter instantly starts fully-drained batteries with its 4000A capacity, perfectly for every trip. This car jump starter includes smart jumper cables with intuitive indicators, providing a safe and seamless user experience. The car starter automatically analyzes the battery's voltage to deliver the appropriate boost. For batteries at 9-12 V, it will automatically jumpstart them after the jumper cable is connected. When the batteries are below 9 V, the S8 Ultra will prompt you to press the Boost Button, quickly jump starting fully-drained batteries.

The S8 Ultra car battery jump starter provides 10 comprehensive safeties, including reverse polarity, overcurrent, reverse connection, overvoltage, overcharge, overdischarge, overload, short circuit, low/high-temperature protection, and spark-resistance. It is also waterproof (IP 65), dust-proof, and drop-proof. Equipped with multiple ports (5 V/9 V/12 V output USB-A port, 5 V/2.4 A output USB-A port, Type-C in/out port, 15 V DC port), this jump starter is a versatile power bank that charges various electronic devices and powers DC car accessories. Power anything from car vacuum cleaners to cellphones with the S8 Ultra Jump Starter.

The jump starter battery pack was carefully designed to make jump starting vehicles an efficient and safe process. The smart battery indicators ensure ease of use while its high-quality internals ensure powerful performance. The AstroAI S8 Ultra portable car jump starter can pack a punch, reviving cars in less than a minute, using as a safe and reliable tool to help you take risks. A built-in integrated flashlight can makes nighttime operation easy with its 3 light modes.

The S8 Jump Starter, 118 Jump Starter, T8 Jump Starter, MF139 Jump Starter, and MF159 Jump Starter are also available, each with their own unique features and specifications. The S8 Jump Starter has a 1500A capacity, the 118 Jump Starter has a 2000A capacity, the T8 Jump Starter has a 2500A capacity, the MF139 Jump Starter has a 1750A capacity, and the MF159 Jump Starter has a 2500A capacity. These jump starters are suitable for a variety of engine sizes, from 6.0L gas and 3.0L diesel to 8.0L gas and 5.0L diesel.

Customer reviews for these jump starters are excellent, with ratings ranging from 4.4 to 4.8 out of 5 stars. Customers have praised the jump starters' powerful performance, ease of use, and robust safety features. The AstroAI jump starters are a reliable and versatile choice for all your roadside emergency needs.

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