GT4000S

GOOLOO GT4000S 4000A Jump Starter with 100W Bidirectional Charge

GOOLOO GT4000S — 4000A SuperSafe jump starter with 100W two-way fast charging for all gas and up to 10L diesel engines.

★ 4.6 · 2,600 reviews Jump Starters
$99.99 $149.99 Buy on Amazon →

Authentic GOOLOO product. Sold and fulfilled by Amazon. As an Amazon Associate, MyGooloo may earn from qualifying purchases. Affiliate disclosure.

Key specs

Model GT4000S
Category Jump Starters
Product type 4000A Jump
Peak current 4000A
Amazon rating 4.6 / 5 (2,600 reviews)
ASIN B09M9HQG73

Who it’s for

  • Drivers who jump more than rarely and want fast pack turnaround
  • Users who treat the pack as a serious USB-C power bank

Who should skip

  • Buyers who only want the lowest 4000A sticker price
  • Engines that clearly need 6000A+ headroom

Pros

  • ~100W bidirectional charging
  • Status-focused GT experience
  • 4000A everyday class

Cons

  • Costs more than GP4000
  • Still not a truck-class pack

Overview

GOOLOO GT4000S — 4000A SuperSafe jump starter with 100W two-way fast charging for all gas and up to 10L diesel engines.

GT4000S upgrades the 4000A class with 100W bidirectional USB-C and a smart status display. That combination matters when you jump a battery and then need the pack topped up quickly before the next trip — or when you want laptop-grade USB-C power on the road.

Key Features

  • 4000A peak for all gas and up to 10L diesel engines
  • 100W two-way USB-C fast charging
  • SuperSafe lithium jump box for 12V vehicles
  • Portable battery booster and device power bank
  • Flagship everyday GT-series jump starter

Why GOOLOO GT4000S

Pick GT4000S over a basic 4000A pack if recharge speed and live status readouts matter more than the lowest sticker price. It is aimed at drivers who treat the jump starter as both cranking insurance and a serious power bank.

Alternatives to consider

  • GP4000 Similar amps for less money
  • GT6000 More cranking margin, same fast-charge idea
  • GT4000 Similar 4000a jump alternative

FAQ

Is the GOOLOO GT4000S an authentic GOOLOO product?

Yes. MyGooloo lists authentic GOOLOO models. Checkout, shipping, and returns are handled on Amazon when you use the Buy on Amazon link — MyGooloo is an independent affiliate guide, not the official GOOLOO store.

What does 4000A peak mean on the GOOLOO GT4000S?

4000A peak is the maximum surge for a short crank. Also check the gas and diesel liter limits on the Amazon listing and match them to your engine — especially for diesels and cold climates.

Should I buy a jump-only pack or a combo kit instead of the GOOLOO GT4000S?

Choose jump-only if you want maximum cranking per dollar and already own (or prefer) a separate inflator. Choose a jump + inflator combo if trunk space is limited and you want one roadside brick.

Where should I buy the GOOLOO GT4000S?

MyGooloo links to Amazon so you can compare current price, ratings, and fulfillment. As an Amazon Associate we may earn from qualifying purchases at no extra cost to you.