---
product_id: 603019605
title: "S8 Ultra Car Jump Starter, 4000A Safe 12V Battery Booster Pack (All Gas/12L Diesel), Portable Jump Box with Smart Jumper Cables, Type-C/USB, LED Flashlight, Rugged Protection & Storage Bag"
brand: "astroai"
price: "€ 162.84"
currency: EUR
in_stock: true
reviews_count: 13
category: "Astro Ai"
url: https://www.desertcart.hr/products/603019605-s8-ultra-car-jump-starter-4000a-safe-12v-battery-booster
store_origin: HR
region: Croatia
---

# 4000A peak current IP65 waterproof & dustproof 16000mAh lithium-polymer battery S8 Ultra Car Jump Starter, 4000A Safe 12V Battery Booster Pack (All Gas/12L Diesel), Portable Jump Box with Smart Jumper Cables, Type-C/USB, LED Flashlight, Rugged Protection & Storage Bag

**Brand:** astroai
**Price:** € 162.84
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your peace of mind — jumpstart, charge, and conquer the road!

## Quick Answers

- **What is this?** S8 Ultra Car Jump Starter, 4000A Safe 12V Battery Booster Pack (All Gas/12L Diesel), Portable Jump Box with Smart Jumper Cables, Type-C/USB, LED Flashlight, Rugged Protection & Storage Bag by astroai
- **How much does it cost?** € 162.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/603019605-s8-ultra-car-jump-starter-4000a-safe-12v-battery-booster)

## 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

- • **Smart & Safe Boost:** Intelligent jumper cables auto-detect battery voltage with 10 built-in safety protections.
- • **Nighttime Navigator:** Integrated 3-mode LED flashlight ensures you’re never left in the dark during roadside rescues.
- • **Multi-Device Lifeline:** High-capacity 16000mAh battery doubles as a fast-charging power bank with USB-C & USB ports.
- • **Rugged Roadside Ready:** IP65-rated waterproof, dustproof, and drop-resistant design built for any emergency.
- • **Unmatched Power Surge:** 4000A peak current jump-starts all gas & up to 12L diesel engines effortlessly.

## Overview

The AstroAI S8 Ultra is a compact yet ultra-powerful 4000A car jump starter designed for all gas and up to 12L diesel engines. Featuring a robust 16000mAh lithium-polymer battery, it doubles as a versatile portable charger with USB-C and USB ports. Engineered with 10 comprehensive safety features and an IP65-rated rugged build, it ensures reliable, safe roadside assistance anytime. Its smart jumper cables and integrated LED flashlight make vehicle recovery intuitive and efficient, perfect for professionals who demand readiness and reliability on the go.

## Description

Buy AstroAI S8 Ultra 4000A Car Jump Starter, Jump Box up to All Gas Engines & 12L Diesel, 12V Portable Power Bank with USB/Type-C Ports, 3 Modes LED Flashlight, Auto Battery Booster with Jumper Cable: Jump Starters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Compact Powerhouse – Reliable Jump Starter with Extra Perks - I picked up the AstroAI S8 Ultra 4000A Jump Starter as a backup for my vehicle, and after a few weeks of testing it out, here’s what stood out: Performance: • This thing has serious muscle. I helped a stranded motorist with 5.3L V8 truck battery that was completely dead, and it didn’t hesitate. On paper, it’s rated for all gas engines and up to 12L diesel—and based on the kick it gave my truck, I believe it. • The jumper cables feel sturdy, with good clamping force and no noticeable heat build-up even after multiple test jumps. Design & Build: • Compact enough to store in a glove box or center console. It doesn’t feel cheap like big box stores jump packs, and the rubberized edges give some drop protection. • The LED light is bright enough for roadside use—think emergency hazard light or just finding your way under the hood at night. Battery & Ports: • The 24,000mAh capacity isn’t just for jump starts. I used it to recharge my phone, tablet, and even a laptop via the USB-C port. It supports fast charging, which is a plus if you’re out camping or on the road. • Having a DC output is handy if you need to power 12V accessories. Ease of Use: • Straightforward—plug in the jumper cables, connect, and press. The safety system warns you of incorrect polarity, which is a big deal for people who aren’t mechanically inclined. What I Liked Most: • Strong jump-starting ability (even on bigger engines). • Multi-use battery pack—basically a power bank + jump starter in one. • Solid build, portable size. What Could Be Better: • The carrying bag is functional but hard case would be better • The instruction manual is basic. A more detailed guide or QR link to a video would help first-time users. Add-on to consider for this is a 60w folding solar panel so you will never run out power TDLR: If you want peace of mind on the road, the AstroAI S8 Ultra is a smart buy. It’s not just a jump starter—it doubles as a reliable travel power bank. For the price, the features and raw power make it an excellent value.
Review: Fantastic Charger - Works great! Jumped a neighbor’s dead battery quickly. Just make sure it’s charged and ready.

## 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 Amps |
| Battery Capacity | 16000 Milliamp Hours |
| Battery Cell Composition | Lithium Polymer |
| Battery Type | Lithium Polymer |
| Best Sellers Rank | #2,088 in Automotive ( See Top 100 in Automotive ) #35 in Jump Starters |
| Brand | AstroAI |
| Brand Name | AstroAI |
| Compatible with Vehicle Type | All of the above |
| Customer Reviews | 4.7 out of 5 stars 1,368 Reviews |
| Item Dimensions D x W x H | 5.24"D x 10.31"W x 4.29"H |
| Item Weight | 1.79 Pounds |
| Manufacturer | AstroAI |
| Manufacturer Part Number | S8 Ultra |
| Manufacturer Warranty Description | 24MONTHS |
| Model Number | S8 Ultra |
| Peak Output Current | 4000 Amps |
| Product Dimensions | 5.24"D x 10.31"W x 4.29"H |
| Specification Met | IP65 |
| Vehicle Service Type | All of the above |
| Voltage | 12 Volts |

## Product Details

- **Battery Cell Composition:** Lithium Polymer
- **Brand:** AstroAI
- **Product Dimensions:** 5.24"D x 10.31"W x 4.29"H
- **Vehicle Service Type:** All of the above
- **Voltage:** 12 Volts

## Images

![S8 Ultra Car Jump Starter, 4000A Safe 12V Battery Booster Pack (All Gas/12L Diesel), Portable Jump Box with Smart Jumper Cables, Type-C/USB, LED Flashlight, Rugged Protection & Storage Bag - Image 1](https://m.media-amazon.com/images/I/71xENCe8x6L.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Compact Powerhouse – Reliable Jump Starter with Extra Perks
*by N***S on September 2, 2025*

I picked up the AstroAI S8 Ultra 4000A Jump Starter as a backup for my vehicle, and after a few weeks of testing it out, here’s what stood out: Performance: • This thing has serious muscle. I helped a stranded motorist with 5.3L V8 truck battery that was completely dead, and it didn’t hesitate. On paper, it’s rated for all gas engines and up to 12L diesel—and based on the kick it gave my truck, I believe it. • The jumper cables feel sturdy, with good clamping force and no noticeable heat build-up even after multiple test jumps. Design & Build: • Compact enough to store in a glove box or center console. It doesn’t feel cheap like big box stores jump packs, and the rubberized edges give some drop protection. • The LED light is bright enough for roadside use—think emergency hazard light or just finding your way under the hood at night. Battery & Ports: • The 24,000mAh capacity isn’t just for jump starts. I used it to recharge my phone, tablet, and even a laptop via the USB-C port. It supports fast charging, which is a plus if you’re out camping or on the road. • Having a DC output is handy if you need to power 12V accessories. Ease of Use: • Straightforward—plug in the jumper cables, connect, and press. The safety system warns you of incorrect polarity, which is a big deal for people who aren’t mechanically inclined. What I Liked Most: • Strong jump-starting ability (even on bigger engines). • Multi-use battery pack—basically a power bank + jump starter in one. • Solid build, portable size. What Could Be Better: • The carrying bag is functional but hard case would be better • The instruction manual is basic. A more detailed guide or QR link to a video would help first-time users. Add-on to consider for this is a 60w folding solar panel so you will never run out power TDLR: If you want peace of mind on the road, the AstroAI S8 Ultra is a smart buy. It’s not just a jump starter—it doubles as a reliable travel power bank. For the price, the features and raw power make it an excellent value.

### ⭐⭐⭐⭐⭐ Fantastic Charger
*by S***E on April 27, 2026*

Works great! Jumped a neighbor’s dead battery quickly. Just make sure it’s charged and ready.

### ⭐⭐⭐⭐⭐ car jump starter
*by U***X on June 8, 2026*

product is easy to assemble and easy to use and works great.

## 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
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-04*