AstroAI S8 Ultra 12V 4000A Lithium Jump Starter Up to All Gas/12L Diesel
US$129.92
Arrives as soon as ✓ Free shipping — over $200Description
Product Details Item Weight:1.8 pounds Voltage:12 volts Number of Items:1 Model Number:S8 Ultra Battery Type:Lithium Polymer Compatible with Vehicle Type:ATV, Lawn Mower, Motorcycle, Passeng...
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Free shipping over $200
Orders of $200 or more ship free. No code needed.
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Product Details
- Item Weight:1.8 pounds
- Voltage:12 volts
- Number of Items:1
- Model Number:S8 Ultra
- Battery Type:Lithium Polymer
- Compatible with Vehicle Type:ATV, Lawn Mower, Motorcycle, Passenger Car, RV, Snowmobile, Truck, UTV
- Battery Capacity:16000 milliamp_hours
- Amperage:4000 A
- Peak Output Current:4000 A
- Specification Met:IP65
- Manufacturer Part Number:S8 Ultra
- Number of Packs:1
- Item Highlight:Heavy-duty Battery Booster with Smart Jumper Cables, Type-C Power Bank, 3-Mode LED Flashlight, Rugged Protection, Orange
- Manufacturer Warranty Description:24MONTHS
About this item
- 4000A PEAK POWER & WIDE COMPATIBILITYThe S8 Ultra car jumper delivers 4000A peak current and a 45C discharge rate for fast, reliable jump-starting. If your vehicle won't start due to low battery voltage, simply press BOOST for an emergency jump-start. Compatible with all Gas/12L diesel, plus 12V vehicles such as motorcycles, pickup, RVs, tractors, trucks, vans, ATVs, and more. Built to last 1000+ charge cycles, and engineered to withstand extreme weather from -4°F to 122°F (-20°C to 50°C).
- ADVANCED SAFETY & HEAVY-DUTY BUILDThe S8U car battery jumper features smart cables with 10 comprehensive safeties. Patented spark-proof and reverse-polarity protection helps prevent sparks and reverse-polarity hookups during use. Tested to UL (NRTL), FCC, and IEC standards. IP65-rated and rugged protection design. Equipped with a longer, thicker cable (18.5 inches long, 0.24 inches thick) and reinforced precision connector, ensuring a secure connection and stable startup power.
- MULTIFUNCTIONAL & RELIABLEBuilt-in 300-lumen flashlight with 3 modes: Lighting, Strobe, and SOS — 80-Hour Runtime, ideal for camping, engine checks, and emergency signaling. It also doubles as a portable power bank with 1 USB-C port and 2 USB-A ports to charge phones, tablets, drones, and more. It's a reliable backup for daily driving, road trips, camping, and unexpected battery emergencies. (Note: Wall charger not included)
- EASY TO USE & ULTRA PORTABLEThe jump pack automatically analyzes battery voltage and delivers the right power for a boost. Smart jumper clamps with intuitive indicator lights help you quickly identify and resolve issues. The upgraded unit weighs only 1.79 lb and measures 8.94 x 3.82 x 1.42 in, so it fits easily in a bag or anywhere in your car. A storage bag is included to keep accessories organized, prevent loss, and reduce wear.
- KEY TIPS & SUPPORTFor best performance, fully charge before first use and recharge at least every 3 months during long storage. Use and store within the recommended temperature range: operating/storage -4°F to 122°F; charging 32°F to 113°F. Avoid prolonged exposure to high heat, moisture, or direct sunlight. We offer a 30-day return window, 24-month warranty, and 24/7 customer support.
Shipping Policy
Weekend Shed ships from the United States.
Most orders leave the warehouse within 1 business day and arrive in 2–7 business days.
- Free shipping on orders of $200 or more, applied automatically
- Otherwise shipping is a flat $6.90
- Your tracking number is emailed as soon as your order ships
- We currently ship to the lower 48 United States
Return policy
30-day returns.
If it's not quite right, you can request a return within 30 days of delivery, and Weekend Shed will email you return instructions. Change-of-mind returns must be unused, unassembled, and in their original packaging. There is no restocking fee. Depending on the item's packaged size and weight and how it needs to be collected, a change-of-mind return may have a return shipping or pickup cost. We only deduct the actual cost: we tell you the exact amount and get your OK before arranging a paid return, and if there is no cost, nothing is deducted. Returns for damaged, defective, or incorrect items are free.
How it works
- Email us at support@weekendshed.com with your order number.
- We send your return instructions within 1 business day, along with any return shipping cost so you can decide.
- Your refund goes back to your original payment method within 10 business days of the carrier scan.
Damaged or defective on arrival? Send a photo and Weekend Shed replaces or refunds immediately, return shipping on us, and in most cases you won't need to send anything back.