AstroAI S8 Ultra 12V 4000A Lithium Jump Starter Up to All Gas/12L Diesel
Original price was: $209.99.$108.27Current price is: $108.27.
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【4000A PEAK POWER & WIDE COMPATIBILITY】The 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 BUILD】The 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 & RELIABLE】Built-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 PORTABLE】The 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 & SUPPORT】For 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. Contact us anytime—we’re here to help.
Frequently Asked Questions
We currently ship to customers throughout the United States.
Most orders are delivered within 3–7 business days. Delivery times may vary depending on your location and carrier conditions.
Once your order has shipped, you’ll receive a confirmation email with your tracking number.
Please contact us as soon as possible at [nextrony365@gmail.com] Changes or cancellations are only possible before your order has been processed or shipped.
Yes. Eligible items may be returned in accordance with our Return & Refund Policy. For assistance, please contact us at [nextrony365@gmail.com]
Once your return is received and approved, your refund will be issued to your original payment method.
Please email us at [nextrony365@gmail.com] with your order number and clear photos of the item. We’ll be happy to assist you.
For any questions about your order, shipping, returns, or products, please contact us at [nextrony365@gmail.com]
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