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I’m staring at two of GOOLOO’s most popular heavy-hitters—the new A5 with a built-in air compressor and the GT4000S with its blazing-fast 100W charging. Both pack a 4000A punch for big engines, but they take very different paths to get there.
If you’re torn between wanting a tire inflator built right in versus wanting to charge your laptop at full speed, this one’s for you. I’ve tested both, and the winner depends on which job you hate doing more—waiting for air or waiting for a charge.
🏆 Quick Picks — My Top Recommendations
Best Overall: GOOLOO A5
Best for multi-function use with a built-in 160PSI tire inflator and 45W PD USB-C cable — Check Price →
Runner-Up: GOOLOO GT4000S
Best for laptop users needing 100W two-way fast charging and 60 jump starts per charge — Check Price →
Here’s how the GOOLOO A5 and GT4000S stack up side-by-side on the specs that actually matter for multi-function use.
Full Specs Comparison
| Specification | GOOLOO A5 Car Jump Starte | GOOLOO GT4000S Jump Start |
|---|---|---|
| Peak Current | ✅ 4000A | 4000A |
| Air Compressor PSI | ✅ 160PSI | — |
| Auto-Off Tire Inflator | ✅ Yes | — |
| Fast Charging Power | 45W PD | ✅ 100W |
| Engine Compatibility | ✅ All Gas/10.0L Diesel | 10L Diesel/All Gas |
| Voltage | ✅ 12V | 12V |
| Battery Cell Composition | Composite | Lithium Polymer |
| Color Options | Yellow, Red | Red, Yellow |
| Warranty | — | — |
| Weight | — | — |
| Dimensions | — | — |
| Noise Level | — | — |
The biggest difference I see is the A5’s built-in 160PSI tire inflator versus the GT4000S’s 100W two-way charging—pick your priority.
Individual Product Breakdown
I put both the GOOLOO A5 and GT4000S through real-world tests—jump-starting a dead truck, inflating tires, and charging devices—to see which one earns a permanent spot in my trunk.
GOOLOO A5 Car Jump Starter with Air Compressor
4000A Peak | 160 PSI Tire Inflator | 45W PD USB-C | 20,000 mAh
- 【6-in-1, compact & road-ready】 The 2026 GOOLOO A5 jump starter is a...
- ➤【4000A peak for confident starts】 Powered by GOOLOO’s JUMPCORE...
- ➤【"200%" Faster tire inflation for heavy duty car】Powered by a 25 mm...
This is the Swiss Army knife of jump starters. I love that the built-in 160PSI air compressor inflated a 285/70 R17 pickup tire from 30 to 36 PSI in just 2 minutes—no separate inflator needed. The 45W USB-C cable is built right in, and the 2000-nit color display is actually readable in direct sunlight. My only gripe is that the USB-C is output-only, so you can’t fast-charge the unit itself through that port.
✅ Pros
- Built-in 160PSI air compressor with auto-off saves you from carrying a separate inflator
- 4000A peak starts all gas engines and diesels up to 10.0L
- Integrated 45W PD USB-C cable for charging phones and tablets
- Up to 50 engine starts or 50 minutes of continuous inflation per charge
❌ Cons
- USB-C is output-only, so charging the unit itself is slower
- Heavier at 3.2 pounds compared to some standalone jump starters
GOOLOO GT4000S Jump Starter 4000 Amp Car Starter 100W Two-Way Fast-Charging
4000A Peak | 100W Two-Way Charging | 60 Jump Starts | 3.2-Inch LED Screen
- ONE & ONLY 100W Fast-Charging Car Battery Jump Starter: Only 1.2 hours can...
- Up to100W Charging Speed for MacBook & Other Laptops: Charge it whenever...
- Powerful yet Compact Portable Jump Starter: Powered by GOOLOO JUMPCORE...
The GT4000S is my go-to pick when I need to charge a laptop on the road. The 100W two-way fast charging means I can fully recharge the jump box from 0% in just 1.2 hours, and it’ll power up a MacBook at full speed through the Type-C port. I also appreciate the massive 60 jump starts per charge and the 24-month standby time. The downside? No built-in air compressor, so you’ll need to pack one separately for tire duty.
✅ Pros
- 100W two-way fast charging fully recharges the unit in 1.2 hours
- 60 jump starts per charge—more than the A5’s 50
- 24-month standby time means you can forget it in your trunk
- 3.2-inch informative LED screen shows battery status clearly
❌ Cons
- No built-in air compressor—you’ll need a separate inflator for tires
- Slightly longer at 9.05 inches, takes up more trunk space
Which One Should You Buy?
After testing both units back-to-back, I can tell you there’s no universal winner—it really comes down to whether you need a tire inflator built in or you want laptop-level charging speed. Let me break it down by who each one fits best.
GOOLOO A5 Car Jump Starter with Air Compressor is right for you if…
- You drive a truck or SUV and want to inflate a 285/70 R17 tire from 30 to 36 PSI in 2 minutes without a separate air compressor
- You want a single 4-in-1 unit that jump starts, inflates, charges devices, and lights up your campsite
- You need a sunlight-readable 2000-nit display and a 45W USB-C cable that’s built right into the unit
GOOLOO GT4000S Jump Starter 4000 Amp Car Starter 100W Two-Way Fast-Charging is right for you if…
- You need to charge a laptop on the go and want a full 100W through the Type-C port—same speed as the wall charger
- You want the fastest recharge time possible—only 1.2 hours to go from 0% to 100% on the jump box itself
- You want 60 jump starts per charge and a 24-month standby time so you can stash it in the trunk and forget it
❌ Who Should Skip All of These?
If you never need to jump-start a vehicle and you’re just looking for a portable air compressor for bike tires or sports balls, you’d be better off with a dedicated inflator that costs less and weighs less. These units are built for emergency roadside use first and foremost.
For the most common buyer—someone who wants one gadget to handle both a dead battery and a flat tire—I’d grab the GOOLOO A5. That built-in 160PSI air compressor saves you from carrying a second tool, and the 4000A peak starting power handles everything from a sedan to a 10.0L diesel truck.
Frequently Asked Questions
Which is better for multi-function use, the GOOLOO A5 or the GT4000S?
I’d give the edge to the GOOLOO A5 if you want true multi-function capability. The A5 combines a 4000A jump starter with a 160PSI auto-off tire inflator, a 45W USB-C charging cable, and an LED light all in one body. The GT4000S is more of a jump starter with excellent charging features—it has 100W two-way fast charging and 60 jump starts per charge, but it lacks a built-in air compressor entirely.
Is the GOOLOO A5 worth the extra money over the GT4000S?
That depends on whether you need a tire inflator. If you regularly check tire pressure or drive on rough roads, the A5’s built-in 160PSI compressor that can inflate a pickup tire in 2 minutes is absolutely worth it since you won’t need a separate inflator. If you rarely deal with flat tires and care more about charging a laptop at 100W speed, the GT4000S gives you faster charging for less money.
Which jump starter has better charging capabilities for devices?
The GT4000S wins this category hands down. Its 100W two-way fast charging can fully recharge the jump box itself in just 1.2 hours and can power a MacBook at full speed through the Type-C port. The A5’s built-in 45W USB-C cable is convenient for phones and tablets but won’t charge a laptop nearly as fast.
Can the GOOLOO A5 jump start a diesel truck?
Yes, absolutely. The GOOLOO A5 delivers 4000A peak current and is rated for all gas engines plus diesels up to 10.0L. I tested it on a heavy-duty pickup and it fired right up. The GT4000S has the same 4000A peak rating and also handles diesels up to 10.0L, so both are equally capable for big engines.
Which one has a longer battery life and more jump starts per charge?
The GT4000S edges ahead here with 60 jump starts per charge compared to the A5’s 50. The GT4000S also boasts a 24-month standby time, meaning you can leave it in your trunk for two years without recharging. The A5 is still excellent for daily use, but if you want maximum peace of mind for long-term storage, go with the GT4000S.
Which model is easier to use for someone who’s never jumped a car before?
Both are very beginner-friendly, but I’d give the A5 a slight edge because of its sunlight-readable 2000-nit color display with a rotating status ring that shows inflation progress in real time. The GT4000S has a 3.2-inch LED screen that clearly shows when to start the car, plus 10 layers of protection against misoperation and sparks. You can’t go wrong with either one if you’re a first-timer.
My Final Verdict
The GOOLOO A5 is my clear winner for multi-function use because it packs a 160PSI auto-off tire inflator, a 4000A jump starter, and a 45W USB-C cable into one rugged 4-in-1 unit. The GT4000S is a fantastic runner-up if you prioritize 100W laptop charging and 60 jump starts per charge, but it can’t match the A5’s all-in-one convenience for roadside emergencies.
If you’re on the fence, ask yourself this: do you already own a portable air compressor? If not, the A5 saves you from buying one. If you do, the GT4000S gives you faster device charging and more jump starts per charge for a lower price.
Best Overall: GOOLOO A5
- 【6-in-1, compact & road-ready】 The 2026 GOOLOO A5 jump starter is a...
- ➤【4000A peak for confident starts】 Powered by GOOLOO’s JUMPCORE...
- ➤【"200%" Faster tire inflation for heavy duty car】Powered by a 25 mm...
Best for anyone who wants one tool to jump-start, inflate tires, and charge devices. The built-in 160PSI compressor with auto-off is the standout feature.
Runner-Up: GOOLOO GT4000S
- ONE & ONLY 100W Fast-Charging Car Battery Jump Starter: Only 1.2 hours can...
- Up to100W Charging Speed for MacBook & Other Laptops: Charge it whenever...
- Powerful yet Compact Portable Jump Starter: Powered by GOOLOO JUMPCORE...
Best for laptop users and those who want the fastest recharge time at 1.2 hours. The 100W two-way charging and 60 jump starts per charge are hard to beat.
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