Gooloo GT4000S 4000 Amp Fast-Charging Portable Jump Starter and Power Bank for 12V Vehicles
Gooloo GT4000S 4000 Amp Fast-Charging Portable Jump Starter for 12V Vehicles
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Gooloo GT4000S 4000 Amp Fast-Charging Portable Jump Starter for 12V Vehicles

111 ratings

Key item features

  • Fast Charging: Fully charges from 0% to 100% in just 1.2 hours; a quick 5-minute charge is sufficient to start a vehicle.
  • High Power: Delivers 4000A peak cranking power, capable of starting 12V engines up to 12.0L gasoline or 10.0L diesel in seconds.
  • Compact Design: Easy to store and transport due to its compact size.
  • Safety Features: Equipped with a 3.2-inch LED screen and 10 built-in protection technologies to prevent misoperation and sparks.
  • Long Stand-by: 24 months stand-by time without the need for regular charging.
  • Multi-functional: Functions as a portable battery bank with three USB ports, a 400-lumen flashlight with three modes, and a 15V 10A port for powering DC devices.
  • Complete Package: Includes heavy-duty jumper cables, SC 100W car charger, USB to Type-C cable, Type-C to Type-C cable, cigarette lighter adapter, storage bag, and user manual.
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Specs

Battery capacity, 20000 mAhAmps, 4000 AAutomotive battery type, Lithium-Ion BatteryBrand, GoolooPower type, BatteryCompatible cars, RVs|Pickup Trucks|Motorcycles|SUVs|Tractors|Boats

About this item

Product details

Experience the revolutionary power and convenience of the GOOLOO GT4000S, the unmatched 100W fast-charging car battery jump starter. This innovative power solution charges fully in just 1.2 hours and is ready to start your vehicle in as little as 5 minutes. Despite its compact size, it delivers an astonishing 4000A peak cranking power, capable of jump-starting 12V batteries engines in vehicles up to 12.0L gasoline or 10.0L diesel. With a single charge offering up to 60 jump starts, the Car Jump Starter is the reliable companion your vehicle needs. Its efficient laptop charging feature powers up your MacBook and other devices just as swiftly as your original adapter. Moreover, it's an all-in-one power bank with three USB ports, a 400-lumen flashlight, and a 15V 10A port for powering DC devices. Its comprehensive package includes jumper cables, a car charger, and various cables. Trust in the unmatched power, versatility, and peace of mind of the GOOLOO GT4000S Car Jump Starter - your ultimate on-the-go power solution.

Gooloo GT4000S 4000 Amp Fast-Charging Portable Jump Starter for 12V Vehicles

  • ONE & ONLY 100W Fast-Charging Car Battery Jump Starter: Fully charges from 0% to 100% in just 1.2 hours. A quick 5-minute charge is sufficient to start a vehicle. Includes a 100W car charger. Up to 100W Charging Speed for MacBook & Other Laptops: Charge your devices quickly and efficiently using the Type-C port
  • Powerful yet Compact Portable Jump Starter: Delivers 4000A peak cranking power, capable of starting 12V engines up to 12.0L gasoline or 10.0L diesel in seconds. Compact design makes it easy to store and transport
  • Easier & Safer to Jump-start: Features a 3.2-inch LED screen to display product status, ensuring intuitive operation Equipped with 10 built-in protection technologies to prevent misoperation and sparks
  • 24 Months Stand-by Time: Regular charging is not required, thanks to the built-in protection technologies that extend the product's service life
  • More than a Battery Jump Starter: Functions as a portable battery bank with three USB ports, a 400-lumen flashlight with three modes (SOS, Spotlight, Strobe), and a 15V 10A port for powering DC devices like tire inflators and inverters
  • In The Box: Includes the Gooloo 4000A Portable Car Jump Starter, heavy-duty jumper cables, SC 100W car charger, USB to Type-C cable, Type-C to Type-C cable, cigarette lighter adapter, storage bag, and user manual
info:
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Specifications

Battery capacity

20000 mAh

Amps

4000 A

Automotive battery type

Lithium-Ion Battery

Brand

Gooloo

Warranty

Warranty information

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Warnings

Customer ratings & reviews

4.5 out of 5 stars
stars
111 ratings45 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars81% (90)
  2. 4 stars5% (6)
  3. 3 stars5% (5)
  4. 2 stars3% (3)
  5. 1 star6% (7)

Reviews summary

Pros

  • : Operates with clear instructions and simple functionality.
  • : Offers similar performance at lower cost.

Cons

  • : Lacking sturdy protection for secure storage.
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Showing 1-3 of 45 reviews

Dec 16, 2025
Reviewer name: DEBORAH
Top Reviewer
Sold byGOOLOODelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Gooloo T4000S Jump Starter

My car (2008 sedan) battery was completely dead about 4 days ago (Friday), so I did some research, narrowed it down (based on the reviews) to the Gooloo T4000S, ordered it online same day, received it 2 days later (Sunday), it arrived already 80% charged, but I went ahead and charged it up to 97G%, the car fired right up, hopefully it was just a dead battery. What a feeling of independence and a great product. So far so good, I definitely recommend this product.

Helpful?2DIFREP7BH663719221463
Jul 19, 2026
Reviewer name: jason
Sold byGOOLOODelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Would buy again!

Did great starting our boat motor that had a dead battery.

Helpful?2DIFREP7BH663719221463
Jun 30, 2026
Reviewer name: anonymous
Sold byGOOLOODelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

love this does what is suppose to do and doesn't disappoint would recommend having this in your car I've helped people in need of a jumpstart and has not failed me once

Helpful?2DIFREP7BH663719221463
Current price is $139.99
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4.7 stars out of 5, based on 4979 seller reviews(4.7)
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