# AstroAI S8 Ultra 4000A 12V Lithium Jump Starter

The AstroAI S8 Ultra is a 12V lithium jump starter listed with 4000A peak current and compatibility claims for all gas engines and up to 12L diesel. It also serves as a USB power bank and includes a three-mode LED flashlight, while the listed specifications and feature copy differ on the unit’s dimensions and weight.

- [Original product page](https://best-deals.pro/product/astroai-s8-ultra-4000a-12v-lithium-jump-starter)
- [View offer](https://best-deals.pro/visit/astroai-s8-ultra-4000a-12v-lithium-jump-starter)
- Market: US
- Language: en-US
- Currency: USD
- Brand: AstroAI
- Category: Cars & Motorcycles > Vehicle Accessories
- Price: 72.17 USD
- Previous price: 139.99 USD
- Discount: 48%
- Price checked: 2026-11-14T05:42:53.714Z
- Rating: 4.6 / 5
- Reviews: 1634

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Advertised 4000A peak current and compatibility with all gas engines and up to 12L diesel. These are listing claims, not independently verified performance results.
- Functions as a power bank with one USB-C and two USB-A ports. The listing says the wall charger is not included.
- Built-in 300-lumen flashlight has Lighting, Strobe, and SOS modes, with an 80-hour runtime claim.
- Smart jumper cables are described as including spark-proof and reverse-polarity protection.

## Pros

- Combines a jump starter, three-mode flashlight, and three USB charging ports in one unit.
- The feature copy describes automatic battery-voltage analysis and indicator lights on the jumper clamps.
- Customer feedback reports successful starts, easy operation, and portability.

## Cons

- A wall charger is not included, so charging the unit requires a suitable charger or another power source.

## Specifications

### Identity
- Brand: AstroAI
- Model: S8 Ultra
### Power and battery
- Battery type: Lithium Ion
- Voltage: 12 volts
- Capacity: 16000 milliamp\_hours
- Listed amperage: 4000 A
### Dimensions and weight
- Dimensions listed in product details: 5.24"D x 10.31"W x 4.29"H
- Weight listed in product details: 2.1 pounds
### Jump-starting claims
- Engine compatibility stated in title: Up to All Gas/12L Diesel
- Peak current and discharge rate stated in feature copy: 4000A peak current and a 45C discharge rate
- Claimed charge-cycle life: 1000+ charge cycles
- Claimed operating and storage temperature range: -4°F to 122°F
- Charging temperature range: 32°F to 113°F
### Connections and lighting
- USB ports: 1 USB-C port and 2 USB-A ports
- Flashlight: 300-lumen flashlight with 3 modes: Lighting, Strobe, and SOS — 80-Hour Runtime
### Cables and protection
- Cable length and thickness: 18.5 inches long, 0.24 inches thick
- Ingress protection claim: IP65-rated
- Safety features: 10 comprehensive safeties

## Before you buy

- The supplied product details list a substantially larger size and higher weight than the feature copy, making the actual carry dimensions unclear.
- The listing is inconsistent about size and weight. Product details give 5.24"D x 10.31"W x 4.29"H and 2.1 pounds, while feature copy gives 8.94 x 3.82 x 1.42 in and 1.79 lb. Its title and feature copy claim support for up to 12L diesel, but the listed engine claim is not independently confirmed. Check the selected listing for the exact configuration.

## A good fit for

- Drivers who want a portable jump starter with USB charging and a built-in emergency flashlight.
- Buyers seeking a listed 12V unit with claims covering gas engines and up to 12L diesel, subject to confirming suitability for their vehicle.

## Less suited to

- Buyers who need a wall charger included.
- Buyers who require confirmed physical dimensions or independently verified engine compatibility before purchase.

## Customer feedback

Customer feedback highlights successful vehicle starts, perceived battery endurance, ease of use, portability, and build quality. Some accounts describe multiple starts between charges, but these are individual reports rather than a guaranteed result. Those impressions are relevant to its advertised jump-start and portable power-bank role, though they do not settle the listing’s conflicting size and weight figures or confirm compatibility with a particular engine.
- Positive themes: Customer feedback reports successful starts, perceived battery endurance, and straightforward operation.
- Positive themes: Feedback also describes the unit as portable and solidly built.

## Frequently asked questions

### What vehicles does the AstroAI S8 Ultra claim to support?
The title and feature copy claim compatibility with all gas engines and up to 12L diesel, as well as 12V vehicles. Confirm the selected listing and your vehicle’s requirements before relying on that claim.
### Can it charge phones or other devices?
The listing describes one USB-C port and two USB-A ports for charging devices. It says a wall charger is not included.
### What is unclear about the listed size and weight?
Product details list 5.24"D x 10.31"W x 4.29"H and 2.1 pounds, while feature copy lists 8.94 x 3.82 x 1.42 in and 1.79 lb. The listing does not resolve this discrepancy.
### What care does the listing recommend?
It recommends fully charging the unit before first use and recharging at least every three months during long storage. The stated operating and storage range is -4°F to 122°F, and charging is stated as 32°F to 113°F.

## Alternative options

- [8250A Jump Starter Battery Jump Starter Battery Pack \(for All Gas or 10.0+L Diesel\)...](https://best-deals.pro/visit/quoesd-h8-8250a-jump-starter)
- [WOLFBOX MV16A 3000A Jump Starter with Air Compressor, 59.2Wh&160PSI Portable Car Battery Jump Starter with 65W Fast Charging, 12V Battery Pack \(8L Gas 6L Diesel\) with Boost, Light and Jumper Cables](https://best-deals.pro/visit/wolfbox-megavolt-16-air-mv16a-jump-starter-compressor)
- [Povasee 4000A Jump Starter 12V Battery Jumper Starter\(10L Gas 10L Diesel Engine\),Car Battery Jump Starter with 3" LCD Display, Dual Output/LED Light](https://best-deals.pro/visit/astroai-s8-ultra-4000a-12v-lithium-jump-starter)
- [SATA 2000A Car Battery Jump Starter, 8.5L Gas & 6.5L Diesel, 12V Jump Box \| 88.8Wh Booster Jump Pack for Dead Battery -4°F to 140°F, 18W Fast Charging, Jumper Cables, LED Light, Up to 12-Month Standby](https://best-deals.pro/visit/sata-340920-2000a-12v-jump-starter)
- [3000A Peak Car Jump Starter with Air Compressor, 12V Portable Battery Booster for 9...](https://best-deals.pro/visit/dcmlife-d24-jump-starter-air-compressor)
- [AVAPOW 8000A Battery Jumper Starter Portable with 4″ HD Display PD 30W Dual-Way Fast Charging, 12V Car Starter Jump Box & Battery Booster for All Gas & Up to All Diesel Engines](https://best-deals.pro/visit/avapow-tj58-8000a-portable-jump-starter)
- [GOOLOO F7 Jump Starter with Compressed Air Duster, 2500A Portable Jump Box \| Car Battery Booster Pack \(8L Gas/6L Diesel\), 150000RPM cordless air duster, 4-Gear Adjustable, LED Light, SOS, Power Bank](https://best-deals.pro/visit/gooloo-f7-jump-starter-air-duster)
- [WOLFBOX 4000A Jump Starter,12V Car Battery Jumper Starter Portable with 65W Quick Charger,LED Display,88.8Wh Booster Jump Box Pack \(10L Gas 10L Diesel Engine\) with LED Light,Jumper Cables, MV24](https://best-deals.pro/visit/astroai-s8-ultra-4000a-12v-lithium-jump-starter)
- [NOCO Boost GBX75 2500A UltraSafe Jump Starter, 12V Lithium Battery Booster \| Spark-Proof & Reverse Polarity Protection, For Car, Truck, Motorcycle, SUV, Boat, ATV, RV, up to 8.5L Gas & 6.5L Diesel](https://best-deals.pro/visit/astroai-s8-ultra-4000a-12v-lithium-jump-starter)
- [NOCO Boost GBX155 4250A UltraSafe Jump Starter, 12V Lithium Battery Booster \| Spark-Proof & Reverse Polarity Protection, For Car, Truck, Motorcycle, SUV, Boat, ATV, RV, up to 10.0L Gas & 8.0L Diesel](https://best-deals.pro/visit/astroai-s8-ultra-4000a-12v-lithium-jump-starter)
- [\[2026NEW Model\] 5000A Jump Starter with Air Compressor,Car Jumper Starter Portable with 150PSI Tire Inflator 12V Jump Box with LCD Display,Flashlight,Storage Case \(Up 9L Gas/8L Diesel Engine](https://best-deals.pro/visit/astroai-s8-ultra-4000a-12v-lithium-jump-starter)
- [NOCO Boost GB150 3000A UltraSafe Jump Starter, 12V Lithium Battery Booster \| Spark-Proof & Reverse Polarity Protection, For Car, Truck, Motorcycle, SUV, Boat, ATV, RV, up to 9.0L Gas & 7.0L Diesel](https://best-deals.pro/visit/astroai-s8-ultra-4000a-12v-lithium-jump-starter)

## Images

![AstroAI S8 Ultra 4000A 12V Lithium Jump Starter — 1](https://best-deals.pro/i/hQI6ZLjRdbfhbTB5WImI7D6ZvYwlx0VVR98N_EaR_RGRJNYGVMJ2mFxfjvwLtgKTCgvJUHwM-jAqveCjcNYylPxf2FgJo8djiKaLQHaXjz2r0EAzyOZb4s-H.jpg)

![AstroAI S8 Ultra 4000A 12V Lithium Jump Starter — 2](https://best-deals.pro/i/E9A00JzEfRZdA5mXKhovdDfHj1ml9MTnRYVqd9gEwW2VVac-YYqCdYSErj0_PB-Yt96YqrwwmgWxudpZxlfm0WNHUv3fzyMl9jBJZ5sQnyAsq8fMf-xT3piy.jpg)

![AstroAI S8 Ultra 4000A 12V Lithium Jump Starter — 3](https://best-deals.pro/i/afDZMXmyCy9-a6NF3SK_YfD1tpCPL8EmBPwwHNibIy6q2KxFGU9x199Y3wrTohbOJdgabWWFFEYxuGTRLWGoVFoXbqukE1xtQj48pLC12Creu_gjbhuiLum0.jpg)

![AstroAI S8 Ultra 4000A 12V Lithium Jump Starter — 4](https://best-deals.pro/i/mH3qFizrGibzMXPuKszQv4IktpGAwei6Zr60Bgi3yLF8tOXLe8wBFeKw8avZbbWl-FVkw70rriYVkOL3OwtNxRJucrNmnMuUnZffzXL3RMDPzQRu4KzUOgxb.jpg)

![AstroAI S8 Ultra 4000A 12V Lithium Jump Starter — 5](https://best-deals.pro/i/oiskvhXRTcRCpr_RfoMQjuXKSqA6yun0oeVYVqxF6wyq0O7X845vESLhpWmlrZQCD1poQfK-8xSzwSI4K1CuWz_tlMTZbzzkcKhBMqSL7krIQrih0szx1lE9.jpg)

![AstroAI S8 Ultra 4000A 12V Lithium Jump Starter — 6](https://best-deals.pro/i/erf4JVX90CUWHLaNk0KfFf80rbg2GnuoMOBMwgr5gs9FRECzJ2jhoJ8qpGDBS-plCr0zVZ5sT2w-8tjjt4NzOGGLrXIVuCJDnM9pH9UP4r5r6_ez9nTgGk3w.jpg)

![AstroAI S8 Ultra 4000A 12V Lithium Jump Starter — 7](https://best-deals.pro/i/BowiOyFwPbmBw2kq5zjaqRT7O0eQdimlLn5Ej3eJTk-TxEW_Ipfe-Y88IsGz28GqV35C08ro0bIqay2cGTFNfUmZt-YaDuXDb4GLGBxcCpN5aPG7lX9Jkwgu.jpg)