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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.

  • Drivers who want a jump starter that can crank a V6 quickly, because it has strong real-world starting power and holds charge for ages.

  • Shoppers comparing against premium alternatives, because similar models from that brand cost much more for comparable capacity and output.

  • Road-trippers who need fast recharging between uses, because the 100W USB-C input and output top off far faster than low-watt jump starters.

  • People who also want to power 12V accessories from the pack, because it includes DC output for devices like an air pump or DC fridge.

  • People who need the lowest upfront price from a premium brand comparison, because similar units from that brand are described as costing far more.

  • Drivers in colder climates who park outside in negative temperatures, because this model lacks self-preheat and the colder-weather version is the better fit.

  • Buyers who want the cheapest possible backup starter, because a competing model is repeatedly described as going on sale for less.

Common Questions (5)

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21 Comments

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Sep 21, 2026 9:37 PM
6.9K Comments
Joined Dec 2004
CaleoSep 21, 2026 9:37 PM
6.9K Comments
Prime-only. Boo.

Edit: Not anymore, apparently!
Last edited by Caleo September 22, 2026 at 12:26 PM.
Sep 21, 2026 10:21 PM
66 Comments
Joined Oct 2014

This comment has been rated as unhelpful by Slickdeals users.

Sep 21, 2026 10:59 PM
646 Comments
Joined Nov 2015
diggieSep 21, 2026 10:59 PM
646 Comments
Quote from Neekachu View quoted comment :
Get a NOCO. same price but better quality
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.
Last edited by diggie September 21, 2026 at 04:02 PM.
Sep 21, 2026 11:01 PM
646 Comments
Joined Nov 2015
diggieSep 21, 2026 11:01 PM
646 Comments

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Before you buy, people in colder climates should seriously think about the GT4000 instead of this GT4000S, because the 4000 has self-preheat, meaning it can work if it's been sitting in your car parked outside for several hours in negative temps after a short warmup period.
7
Sep 21, 2026 11:19 PM
1.9K Comments
Joined Jan 2015
lastwraithSep 21, 2026 11:19 PM
1.9K Comments

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Quote from Neekachu View quoted comment :
Get a NOCO. same price but better quality
Same price!?! Don't think you've ever actually compared prices between those 2 brands, Gooloo is cheaper for similar models.

Noco are great, but they sure as hell aren't priced the same compared to Gooloo.
3
Sep 21, 2026 11:54 PM
6.9K Comments
Joined Dec 2004
CaleoSep 21, 2026 11:54 PM
6.9K Comments

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Quote from Neekachu View quoted comment :
Get a NOCO. same price but better quality
The closest & cheapest NOCO equivalent has to this is probably the GBX45 (with 60W PD input for semi-fast charging, but significantly lower claimed peak amperage at 1250A vs 4000A) and it almost never dips below its normal $125 price. NOT the same price. I know because I've had my eye on it.

NOCO's GBX 1750A, 2500A, and 4250A starters are $175, $250, and $370 respectively.

The 100W PD input & output on this one sets it apart from virtually all other jump starters. Too many jump starters take several hours to top off at piddle little 5-15W charge rates. That won't be the case with this one.
Last edited by Caleo September 21, 2026 at 05:48 PM.
3
Sep 22, 2026 12:14 AM
477 Comments
Joined Jul 2020
Phixion35Sep 22, 2026 12:14 AM
477 Comments

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Quote from Neekachu View quoted comment :
Get a NOCO. same price but better quality
Not even close in price for comparable sized units.
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Sep 22, 2026 6:13 AM
1K Comments
Joined Oct 2017
HeyGuysChrisFixHereSep 22, 2026 6:13 AM
1K Comments

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Quote from Neekachu View quoted comment :
Get a NOCO. same price but better quality
NOCO isn't anywhere near the price of GOOLOO when comparing similar models of each brand. NOCO is very good, but so is GOOLOO as proven by Project Farm, Steinfab Garage who literally throws all 3 of his on the ground all the time and they still work, and many other reputable uses who show real world usage and experience with that brand. I also bought the GT4000S last year after Project Farm reviewed it and it has great CCA output cranking over my V6 as fast as a new car battery does. NOCO does the same, but it costs 2x the normal price for approximately the same rated CCA output and battery capacity of this one, or 3x the price of this one when it is on sale.
2
Sep 22, 2026 8:33 AM
379 Comments
Joined May 2016
jasonwj322aSep 22, 2026 8:33 AM
379 Comments
Quote from diggie View quoted comment :
Before you buy, people in colder climates should seriously think about the GT4000 instead of this GT4000S, because the 4000 has self-preheat, meaning it can work if it's been sitting in your car parked outside for several hours in negative temps after a short warmup period.
Worth the extra money? I'm in the pnw and it can go slightly below freezing here but nothing too crazy.
Sep 22, 2026 8:38 AM
1.2K Comments
Joined Jun 2019
dchang0Sep 22, 2026 8:38 AM
1.2K Comments
Quote from Caleo View quoted comment :
Prime-only. Boo.
I definitely do not have Prime membership and I got this deal to work with the coupon. It is limited time, though.
Sep 22, 2026 9:19 AM
4.9K Comments
Joined Feb 2004
mickey1987Sep 22, 2026 9:19 AM
4.9K Comments
Gooloo is a good brand however I would wait for the Wolfbox 4000 it goes on sale for $60-62 . Search slick deals to see how often. Set a deal alert
Last edited by mickey1987 September 22, 2026 at 03:03 AM.
1
Sep 22, 2026 1:03 PM
6.9K Comments
Joined Dec 2004
CaleoSep 22, 2026 1:03 PM
6.9K Comments
Quote from dchang0 View quoted comment :
I definitely do not have Prime membership and I got this deal to work with the coupon. It is limited time, though.
Looks like that's true now. Yesterday the $99.96 price required prime membership and it was still $119 for everyone without it
Sep 22, 2026 1:12 PM
6.9K Comments
Joined Dec 2004
CaleoSep 22, 2026 1:12 PM
6.9K Comments
Quote from mickey1987 View quoted comment :
Gooloo is a good brand however I would wait for the Wolfbox 4000 it goes on sale for $60-62 . Search slick deals to see how often. Set a deal alert
Looks like it doesn't charge quite as fast as this thing can, FWIW (65W, vs 100W PD in/out).

This also has some other handy tricks like DC output so you can use 12V accessories (e.g. air pump, DC fridge), and it also comes with a 12V -> 100W USB-C charger, which alone is probably worth the difference in price
Last edited by Caleo September 22, 2026 at 06:17 AM.
Sep 22, 2026 3:56 PM
4.9K Comments
Joined Feb 2004
mickey1987Sep 22, 2026 3:56 PM
4.9K Comments
Quote from Caleo View quoted comment :
Looks like it doesn't charge quite as fast as this thing can, FWIW (65W, vs 100W PD in/out).

This also has some other handy tricks like DC output so you can use 12V accessories (e.g. air pump, DC fridge), and it also comes with a 12V -> 100W USB-C charger, which alone is probably worth the difference in price
I guess it depends on what you need it for. I use the Wolfbox for starting the car. I've used it many times on different cars and never had a problem. I've also used it a few time to recharge my phone when I was out.

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Sep 22, 2026 4:36 PM
45 Comments
Joined Jul 2022
SlickGuide917Sep 22, 2026 4:36 PM
45 Comments
Quote from Neekachu View quoted comment :
Get a NOCO. same price but better quality
No way it's same price, but Gooloo is a good brand thou.

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