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CartCipher 12.9K Views
Sep 21, 2026 6:28 PM

GOOLOO 4000A Jump Starter w/ 100W Charging

$80

$100

20% off
+ Free S&Hat Amazon
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Deal Details
GOOLOO via Amazon has GOOLOO 4000A Jump Starter w/ 100W Two-Way Fast Charging (GT4000S) for $99.96 - $19.99 when you apply promo code F3A0WEKN at checkout = $79.97. Shipping is free.

Thanks to community member CartCipher for sharing this deal.

About this item:
  • Only 1.2 hours can fully charge the jump box from 0% to 100%. 5 minutes of charging time are enough to start a car(100W car charger is included in the package).
  • Powered by GOOLOO JUMPCORE technology, the GT4000S delivers 4000A of peak starting power and can jump-start nearly all 12V vehicle engines, including gasoline engines up to 12.0L and diesel engines up to 10.0L, in just a few seconds.
  • Built around GOOLOO TOOLCORE technology, the GT4000S combines multiple roadside and emergency functions in one portable unit. It features three USB ports for charging emergency devices and a 400-lumen flashlight with three modes: SOS, spotlight, and strobe.
  • In The Box: Gooloo 4000A Portable Car jump starter battery pack GT4000S, Heavy Duty Jumper Cables, SC 100W Car Charger, USB to Type-C Cable, Type-C to Type-C Cable, Cigarette Lighter Adapter, Storage Bag, User Manual.

Editor's Notes

Written by johnny_miller | Staff
  • Our research indicates this offer is $20.02 lower (20% savings) than the next best price from a reputable merchant at the time of this post.
  • Please see the original post for additional details & give the forum comments a read for helpful discussion.
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by CartCipher
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
GOOLOO via Amazon has GOOLOO 4000A Jump Starter w/ 100W Two-Way Fast Charging (GT4000S) for $99.96 - $19.99 when you apply promo code F3A0WEKN at checkout = $79.97. Shipping is free.

Thanks to community member CartCipher for sharing this deal.

About this item:
  • Only 1.2 hours can fully charge the jump box from 0% to 100%. 5 minutes of charging time are enough to start a car(100W car charger is included in the package).
  • Powered by GOOLOO JUMPCORE technology, the GT4000S delivers 4000A of peak starting power and can jump-start nearly all 12V vehicle engines, including gasoline engines up to 12.0L and diesel engines up to 10.0L, in just a few seconds.
  • Built around GOOLOO TOOLCORE technology, the GT4000S combines multiple roadside and emergency functions in one portable unit. It features three USB ports for charging emergency devices and a 400-lumen flashlight with three modes: SOS, spotlight, and strobe.
  • In The Box: Gooloo 4000A Portable Car jump starter battery pack GT4000S, Heavy Duty Jumper Cables, SC 100W Car Charger, USB to Type-C Cable, Type-C to Type-C Cable, Cigarette Lighter Adapter, Storage Bag, User Manual.

Editor's Notes

Written by johnny_miller | Staff
  • Our research indicates this offer is $20.02 lower (20% savings) than the next best price from a reputable merchant at the time of this post.
  • Please see the original post for additional details & give the forum comments a read for helpful discussion.
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by CartCipher

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Top Comments

Community Reviews

The GOOLOO GT4000S is a high output jump starter that stands out for fast 100W USB C charging and extra utility features like DC output for 12 volt accessories. It is described as reliable in long term use, with strong cranking power, solid build quality, and a battery that holds charge well. The main caveats are price and cold weather fit, since comparable NOCO units are often pricier but some still prefer NOCO, and the GT4000 model with self preheat is the better cold climate choice. A practical pick if fast charging and extra versatility matter more than the absolute lowest price.

Common Questions (5)

  • Yes. Comparable NOCO models like the GBX45, GBX1750, GBX2500, and GBX4250 are priced much higher, while similar-sized NOCO units are not close in price to this GOOLOO deal.

  • It has a strong reliability track record, with long-term use over years and repeated jump starts without problems. It is also described as holding charge for ages and still working after heavy use.

  • Yes. The 100W PD input and output let it recharge much faster than many jump starters that top off at 5-15W, and it also includes DC output for 12V accessories plus a 12V-to-100W USB-C charger.

  • Yes. The coupon worked without Prime membership, though the deal was limited time, and the earlier $99.96 price had required Prime while non-Prime shoppers saw $119.

  • It can work in cold weather, but the GT4000S lacks self-preheat. For cars parked outside in negative temperatures, the GT4000 is the better pick because its self-preheat can help it start after a short warmup period.

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21 Comments

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Sep 22, 2026 6:34 PM
1.2K Comments
Joined Jun 2019
dchang0Sep 22, 2026 6:34 PM
1.2K Comments
Quote from Caleo View quoted comment :
Looks like that's true now. Yesterday the $99.96 price required prime membership and it was still $119 for everyone without it
Yeah, I've seen Amazon do that a couple of times (expanding the offer)--thanks for the heads-up to the community when you saw it as Prime-only.
Sep 22, 2026 7:57 PM
64 Comments
Joined Aug 2018
ParadoxxSep 22, 2026 7:57 PM
64 Comments
Quote from diggie View quoted comment :
Gooloo quality is excellent. They test well including Project Farm, I have been using them for over a decade no problems, have helped several stranded drivers with them, they hold charge for ages.
You're right. Gooloo is a very good brand. I bought this brand jump starter about 2 years ago & used it a bunch of times & it's still going strong. Price is a little high but it's better to pay a little more & get something reliable.
Sep 22, 2026 10:31 PM
4.9K Comments
Joined Feb 2004
mickey1987Sep 22, 2026 10:31 PM
4.9K Comments
That had the Gooloo a5 that has an air inflater for $65 yesterday. If someone needs one with the air
Sep 26, 2026 5:52 PM
1.3K Comments
Joined Nov 2010
awidSep 26, 2026 5:52 PM
1.3K Comments
I own both a noco gb50 i believe or 70 and the gooloo gt4000s. I find build quality similar and due to the vast power difference i always grab for the gooloo
Sep 27, 2026 1:51 AM
2 Comments
Joined Aug 2025
BraveMallard4210Sep 27, 2026 1:51 AM
2 Comments
i bought one a couple years ago re a project farm review but mine no longer works.
Sep 28, 2026 12:50 AM
4.9K Comments
Joined Feb 2004
mickey1987Sep 28, 2026 12:50 AM
4.9K Comments
Quote from BraveMallard4210 View quoted comment :
i bought one a couple years ago re a project farm review but mine no longer works.
You have to recharge every 6 months. If the battery in the jump starter goes completely dead it won't charge.

That's the same with many jump starters

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