--- product_id: 603019605 title: "S8 Ultra 12V 4000A Lithium Jump Starter Up to All Gas/12L Diesel | Heavy-duty Battery Booster with Smart Jumper Cables, Type-C Power Bank, 3-Mode LED Flashlight, Rugged Protection, Orange" brand: "astroai" price: "¥28170" currency: JPY in_stock: true reviews_count: 13 category: "Astro Ai" url: https://www.desertcart.jp/products/603019605-s8-ultra-12v-4000a-lithium-jump-starter-up-to-all store_origin: JP region: Japan --- # 4000A peak current IP65 waterproof & dustproof 16000mAh Lithium Polymer battery S8 Ultra 12V 4000A Lithium Jump Starter Up to All Gas/12L Diesel | Heavy-duty Battery Booster with Smart Jumper Cables, Type-C Power Bank, 3-Mode LED Flashlight, Rugged Protection, Orange **Brand:** astroai **Price:** ¥28170 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your peace of mind — never get stranded again! ## Quick Answers - **What is this?** S8 Ultra 12V 4000A Lithium Jump Starter Up to All Gas/12L Diesel | Heavy-duty Battery Booster with Smart Jumper Cables, Type-C Power Bank, 3-Mode LED Flashlight, Rugged Protection, Orange by astroai - **How much does it cost?** ¥28170 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/603019605-s8-ultra-12v-4000a-lithium-jump-starter-up-to-all) ## Best For - astroai enthusiasts ## Why This Product - Trusted astroai brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rugged Durability:** IP65-rated waterproof, dustproof, and drop-proof design built to withstand any roadside emergency. - • **Compact Yet Mighty:** Lightweight 1.8 lbs design fits easily in your glove box, delivering heavy-duty performance on demand. - • **Unmatched Power Boost:** 4000A peak current jump-starts all gas & up to 12L diesel engines effortlessly. - • **Smart & Safe Operation:** Intuitive jumper cables with 10 safety protections ensure foolproof, spark-free starts every time. - • **All-in-One Roadside Essential:** Built-in 3-mode LED flashlight and Type-C power bank keep you powered and prepared day or night. ## Overview The AstroAI S8 Ultra is a professional-grade 12V lithium polymer jump starter delivering a massive 4000A peak current, capable of jump-starting all gas and diesel engines up to 12L. Featuring smart jumper cables with automatic voltage detection and 10 comprehensive safety protections, it guarantees safe, reliable starts. Its rugged IP65-rated waterproof and dustproof housing, combined with a built-in 3-mode LED flashlight and Type-C power bank, makes it an indispensable, compact roadside emergency tool for modern drivers. ## Description Buy AstroAI S8 Ultra 12V 4000A Lithium Jump Starter Up to All Gas/12L Diesel | Heavy-duty Battery Booster with Smart Jumper Cables, Type-C Power Bank, 3-Mode LED Flashlight, Rugged Protection, Orange: Jump Starters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Excellent starter, highly recommended - I bought it to keep in my car for emergencies, and so far it's worked great. The materials feel solid, and the clamps have a good grip. The battery holds a charge well and also doubles as a power bank for charging my phone. The LED flashlight is a great extra for nighttime use. The device is compact and easy to store in the car. For the price, it offers excellent features, and I have peace of mind knowing I have it with me. I would definitely recommend it. Review: Great Jump Starter - Thought this would not be powerful so when my battery died on my Tacoma, I tried a battery charger and a jump from a second vehicle. Nothing. Cleaned all the terminals and tried again. Nothing. Then I remembered I had this device, hooked it up and car immediately started. Very impressed. Guy at the battery store said I should have started with this device as they usually work the best of all options. Super easy to charge and use. ## Features - ULTRA POWERFUL JUMP STARTING: The S8 Ultra jump starter delivers a powerful 4000A peak current and 45C discharge rate. This superior power reliably jump-starts all gas and up to 12L diesel engines, even when the battery is fully drained. - EASY TO USE: 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. - SUPERSAFE 12V JUMP BOX: 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. - WIDE COMPATIBILITY PORTABLE CHARGER: Featuring multiple ports, this jump starter doubles as a powerful portable charger for your devices. Keep your phones, tablets, and drones powered on the road with the S8 Ultra. (Wall charger not included.) - CAREFULLY-CRAFTED DESIGNS: This jump starter is precision-engineered to make vehicle recovery both safe and efficient. Its intuitive battery indicators simplify operation, while high-grade internal components guarantee powerful, reliable performance every time. - ROADSIDE CAR EMERGENCY KIT: 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CB3W9FRD | | Amperage | 4000 A | | Battery Capacity | 16000 milliamp_hours | | Battery Cell Composition | Lithium Polymer | | Battery Type | Lithium Polymer | | Best Sellers Rank | #4,000 in Automotive ( See Top 100 in Automotive ) #62 in Jump Starters | | Brand | AstroAI | | Brand Name | AstroAI | | Compatible with Vehicle Type | ATV, Lawn Mower, Motorcycle, Passenger Car, RV, Snowmobile, Truck, UTV | | Customer Reviews | 4.6 out of 5 stars 1,501 Reviews | | Item Highlight | Heavy-duty Battery Booster with Smart Jumper Cables, Type-C Power Bank, 3-Mode LED Flashlight, Rugged Protection, Orange | | Item Weight | 1.8 pounds | | Manufacturer | AstroAI | | Manufacturer Part Number | S8 Ultra | | Manufacturer Warranty Description | 24MONTHS | | Model Number | S8 Ultra | | Number of Items | 1 | | Peak Output Current | 4000 A | | Specification Met | IP65 | | Vehicle Service Type | ATV, Lawn Mower, Motorcycle, Passenger Car, RV, Snowmobile, Truck, UTV | | Voltage | 12 volts | ## Product Details - **Battery Capacity:** 16000 milliamp_hours - **Battery Cell Composition:** Lithium Polymer - **Brand:** AstroAI - **Vehicle Service Type:** ATV, Lawn Mower, Motorcycle, Passenger Car, RV, Snowmobile, Truck, UTV - **Voltage:** 12 volts ## Images ![S8 Ultra 12V 4000A Lithium Jump Starter Up to All Gas/12L Diesel | Heavy-duty Battery Booster with Smart Jumper Cables, Type-C Power Bank, 3-Mode LED Flashlight, Rugged Protection, Orange - Image 1](https://m.media-amazon.com/images/I/71xENCe8x6L.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent starter, highly recommended *by D***S on August 5, 2026* I bought it to keep in my car for emergencies, and so far it's worked great. The materials feel solid, and the clamps have a good grip. The battery holds a charge well and also doubles as a power bank for charging my phone. The LED flashlight is a great extra for nighttime use. The device is compact and easy to store in the car. For the price, it offers excellent features, and I have peace of mind knowing I have it with me. I would definitely recommend it. ### ⭐⭐⭐⭐⭐ Great Jump Starter *by C***D on August 25, 2026* Thought this would not be powerful so when my battery died on my Tacoma, I tried a battery charger and a jump from a second vehicle. Nothing. Cleaned all the terminals and tried again. Nothing. Then I remembered I had this device, hooked it up and car immediately started. Very impressed. Guy at the battery store said I should have started with this device as they usually work the best of all options. Super easy to charge and use. ### ⭐⭐⭐⭐⭐ Quality *by M***O on August 26, 2026* Only use it a few times but it works ok for me, Wanted a better indication/screen to know what's happening but for the price & quality I can't complain ## Frequently Bought Together - AstroAI S8 Ultra 4000A Jump Starter, 24000mAh Car Starter(All Gas, Up to 12L Diesel Engine), 12V Auto Battery Booster Pack, Jump Box with USB Quick Charge and DC/Type C Port, LED Light, Jumper Cable - Worx 4V Electric Screwdriver, Rechargeable Cordless Power Screwdriver Set with 6 Bits, Screw Holder, Charger - WX255L - The Ryker Roll Up Tool Bag Organizer Gifts for Dad. Heavy Duty Motorcycle Tool Roll Bag Organizer. Portable Rollup Toolbag w/Detachable Pouches - Tools Bags Mens gifts for him - Mechanic & Electrician --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/603019605-s8-ultra-12v-4000a-lithium-jump-starter-up-to-all](https://www.desertcart.jp/products/603019605-s8-ultra-12v-4000a-lithium-jump-starter-up-to-all) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-07*