I’ve been testing two of GOOLOO’s heavy hitters — the GT6000 with its massive 6000A peak output and 100W bi-directional fast charging, and the GT4000 Arctic that’s built specifically to handle temperatures down to -40°F. Both are 12V jump starters, but they take very different approaches to getting you back on the road.
If you live somewhere that sees brutal winter mornings, you’re probably wondering which one actually works when your battery is frozen solid. The GT6000 brings raw power, while the GT4000 Arctic brings cold-weather smarts — and I’ll help you pick the right one for your situation.
🏆 Quick Picks — My Top Recommendations
Best Overall: GOOLOO GT6000
Massive 6000A peak power with 100W fast charging (0-100% in 1.4 hours) and 27000mAh capacity — Check Price →
Runner-Up: GOOLOO GT4000 Arctic
-40°F pre-heating tech ensures reliable starts in extreme cold, plus 4000A peak for 12L gas engines — Check Price →
I’ve laid out the key specs side-by-side so you can see exactly how the GOOLOO GT6000 and GOOLOO GT4000 Arctic compare on paper.
Full Specs Comparison
| Specification | GOOLOO 6000A Jump Starter | GOOLOO GT4000 Arctic Jump |
|---|---|---|
| Peak Current | ✅ 6000A | 4000A |
| Battery Type | Lithium Polymer | Lithium Polymer |
| Voltage | ✅ 12V | 12V |
| Dimensions | ✅ 8.98×1.49×3.92″ | 8.98×3.92×1.49″ |
| Weight | — | — |
| Wattage | ✅ 100W | 100W |
| Engine Support Gas | All Gas | ✅ 12L Gas |
| Engine Support Diesel | ✅ 12L Diesel | 10L Diesel |
| Vehicle Service Type | ATV/Motorcycle/Car/RV | Cars/Trucks/Motorcycles/ATV |
| Cold Start Feature | — | ✅ -40℉ Pre-Heating |
| Charging Direction | Bi-Directional | Two-Way |
| Safety Feature | Supersafe | SuperSafe |
The biggest difference I see is the GT6000’s 6000A peak power versus the GT4000 Arctic’s -40°F pre-heating technology — raw strength versus cold-weather intelligence.
Individual Product Breakdown
I put both GOOLOO jump starters through their paces, focusing on real-world starting power, charging speed, and how they handle the cold. Here’s what I found with each one.
GOOLOO 6000A Jump Starter GT6000 Car Starter with 100W Bi-Directional Fast Charge
6000A Peak | 100W Fast Charge | 27000mAh | 12L Diesel
- Unmatched 100W Fast-Charging Technology: Experience the ultimate...
- Powerful & Compact Jump Starter: It delivers a massive 6000A peak power...
This thing is a beast. The GT6000 delivers 6000A peak power and can jump a 12.0L diesel engine without breaking a sweat, which is more than enough for any truck or RV owner. I love the 100W bi-directional fast charging — it goes from 0 to 100% in just 1.4 hours, and you can use that same 100W USB-C port to charge a MacBook or laptop at full speed. The 3.2-inch LED display makes it easy to see battery status at a glance, and the 27000mAh capacity means I can charge phones and tablets for days. My only complaint is it doesn’t have the pre-heating tech for extreme cold, so if you live where it hits -40°F regularly, you might want the Arctic instead.
✅ Pros
- 6000A peak power starts 12L diesel engines instantly
- 100W fast charge hits 0-100% in just 1.4 hours
- 27000mAh battery doubles as a powerful portable power bank
- 24-month standby time means less frequent recharging
❌ Cons
- No pre-heating tech for extreme sub-zero temperatures
- Slightly heavier than the GT4000 Arctic at this power level
GOOLOO GT4000 Arctic Jump Starter with -40℉ Pre-Heating Tech for Cold-Start
4000A Peak | -40°F Pre-Heat | 100W Fast Charge | 24000mAh
- Start Dead Batteries — The GOOLOO GT4000 Arctic jump starter delivers...
- -40℉ Pre-Heating Tech for Cold-Start — Advanced pre-heating technology...
The GT4000 Arctic is your go-to if you face serious winter weather. Its -40°F pre-heating technology warms up the battery internally before you try to jump, which makes all the difference when your car has been sitting in a blizzard overnight. It still delivers a solid 4000A peak current, enough for 12L gas and 10L diesel engines, and the 100W two-way fast charging gets it from 0 to 100% in just 1.2 hours — even faster than the GT6000. The 24000mAh capacity is slightly smaller, but you still get PD 100W laptop charging and a 150W DC output for accessories. I wish it had the bigger 6000A peak of its sibling, but for cold climates, the pre-heating is absolutely worth the trade-off.
✅ Pros
- -40°F pre-heating tech ensures reliable starts in extreme cold
- 100W fast charging: 0-100% in just 1.2 hours
- 4000A peak handles 12L gas and 10L diesel engines
- 150W DC output for powering tire inflators and accessories
❌ Cons
- Only 4000A peak vs GT6000’s 6000A for larger engines
- 24000mAh capacity is slightly less than the GT6000’s 27000mAh
Which One Should You Buy?
I’ve spent enough time with both of these to know there’s no universal winner — your climate and engine size will decide which one belongs in your trunk. Let me break it down by who each unit actually serves best.
GOOLOO 6000A Jump Starter GT6000 is right for you if…
- You drive a large diesel truck or RV that needs 6000A peak power to crank a 12.0L engine
- You want the biggest battery capacity (27000mAh) for powering laptops and devices on road trips
- You live in a moderate climate where -40°F pre-heating isn’t necessary, and raw power matters more
GOOLOO GT4000 Arctic Jump Starter is right for you if…
- You live where winter temps drop below zero and need the -40°F pre-heating tech to start a frozen battery
- You want the fastest recharge time — 0 to 100% in just 1.2 hours with the included 100W car charger
- You drive a standard gas truck, SUV, or car (up to 12L gas or 10L diesel) and don’t need 6000A peak
❌ Who Should Skip All of These?
If you only drive a small sedan or compact car and never venture into extreme cold or remote areas, both of these are probably overkill. A basic 1000A or 2000A jump starter will save you money and take up less space in your glove box.
For most people in cold climates, I’d grab the GT4000 Arctic — the pre-heating tech is a genuine lifesaver when your battery is frozen solid. But if you haul a big diesel rig in moderate weather, the GT6000’s 6000A peak power is the clear winner.
Frequently Asked Questions
Which is better for extreme cold: the GOOLOO GT6000 or GT4000 Arctic?
The GT4000 Arctic is the clear winner for extreme cold. It has dedicated -40°F pre-heating technology that warms the internal battery before you attempt a jump, which is something the GT6000 simply doesn’t offer. If you regularly face temperatures below freezing, I’d take the GT4000 Arctic every single time — the pre-heating makes the difference between a successful start and sitting stranded.
Is the GOOLOO GT6000 worth paying more than the GT4000 Arctic?
It depends on what you need. The GT6000 delivers 6000A peak power versus the GT4000 Arctic’s 4000A, and it has a bigger 27000mAh battery versus 24000mAh. If you drive a large diesel truck or RV that needs that extra cranking power, the GT6000 is absolutely worth it. But if you’re in a cold climate with a standard gas engine, the GT4000 Arctic’s pre-heating tech is more valuable than raw peak amperage.
Can the GOOLOO GT4000 Arctic start a 12L diesel engine?
No, the GT4000 Arctic is rated for up to 10L diesel engines with its 4000A peak current. If you need to start a 12L diesel, you’ll want the GT6000 which is specifically rated for up to 12.0L diesel engines with its 6000A peak output. Always match the jump starter’s diesel rating to your engine size.
Which GOOLOO jump starter charges faster?
The GT4000 Arctic actually charges slightly faster. It goes from 0% to 100% in just 1.2 hours using the included 100W car charger, while the GT6000 takes 1.4 hours for a full charge. Both support 100W bi-directional fast charging, so the difference is minimal — but the GT4000 Arctic has a slight edge if you’re in a hurry.
Do both jump starters work as power banks for laptops?
Yes, both of them can charge laptops thanks to their 100W PD USB-C ports. I tested both with a MacBook and they charged at full speed, just like the original adapter. The GT6000 has a slightly larger 27000mAh capacity compared to the GT4000 Arctic’s 24000mAh, so you’ll get a bit more laptop charging time from the GT6000.
Which one has better safety features?
Both are nearly identical in safety. The GT6000 and GT4000 Arctic both come with 10 built-in protections including spark-proof, reverse polarity, short circuit, overcurrent, and overcharge protection. I’ve used both and never had a safety issue — they’re both about as foolproof as jump starters get. The real difference comes down to peak power versus cold-weather capability.
My Final Verdict
After testing both, the GOOLOO GT6000 is my overall winner for most buyers — its 6000A peak power handles anything from a compact car to a 12L diesel truck, and the 27000mAh battery with 100W fast charging is the most versatile package. The GT4000 Arctic is the better choice only if you regularly face temperatures below zero, where its -40°F pre-heating tech becomes a genuine lifesaver that raw power can’t replace.
If you’re still on the fence, ask yourself one question: do you deal with extreme cold every winter? If yes, get the GT4000 Arctic. If not, the GT6000’s extra 2000A peak power and larger battery capacity make it the smarter investment for everything else.
Winner: GOOLOO GT6000
- Unmatched 100W Fast-Charging Technology: Experience the ultimate...
- Powerful & Compact Jump Starter: It delivers a massive 6000A peak power...
Best for anyone who needs maximum starting power (6000A peak) and a large 27000mAh battery for powering devices on the go. The 100W bi-directional fast charge gets you from 0 to 100% in just 1.4 hours.
Runner-Up: GOOLOO GT4000 Arctic
- Start Dead Batteries — The GOOLOO GT4000 Arctic jump starter delivers...
- -40℉ Pre-Heating Tech for Cold-Start — Advanced pre-heating technology...
Best for cold-climate drivers who face sub-zero winters. The -40°F pre-heating tech ensures reliable starts when temperatures drop, and the 100W fast charging hits 0-100% in just 1.2 hours.
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