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⚡ Power up your ride and your life—never miss a beat on the road!
The AstroAI S8 Ultra is a heavy-duty 12V lithium polymer jump starter delivering a massive 4000A peak current, capable of jump-starting all gas engines and diesel engines up to 12L. Featuring smart jumper cables with automatic voltage detection and 10 comprehensive safety protections, it ensures a safe, foolproof jump start every time. Built tough with IP65 waterproof, dustproof, and drop-proof ratings, it doubles as a portable Type-C power bank and includes a versatile 3-mode LED flashlight—making it the ultimate all-in-one roadside emergency essential for professionals and adventurers alike.














| ASIN | B0CB3W9FRD |
| Amperage | 4000 A |
| Battery Capacity | 16000 milliamp_hours |
| Battery Cell Composition | Lithium Polymer |
| Battery Type | Lithium Polymer |
| Best Sellers Rank | #3,591 in Automotive ( See Top 100 in Automotive ) #51 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 1,507 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 |
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