If you drive a diesel truck, you know a jump starter isn’t optional—it’s essential. I’ve been testing three heavy-hitters from GOOLOO: the GT6000 with its 6000A peak and 100W charging, the GT4000S with 4000A peak, and the beastly GT Truck PRO with a massive 10000A peak and 64000mAh battery.
This comparison is for anyone who needs to reliably fire up a big diesel engine, whether it’s a work truck, RV, or farm equipment. The real trade-off here is raw cranking power versus portability and charging speed, and I’ll break down exactly which one deserves a spot in your rig.
🏆 Quick Picks — My Top Recommendations
Best Overall: GOOLOO GT6000
Best balance of power and portability with 6000A peak, 100W charging to full in 1.4 hours, and 27000mAh capacity — Check Price →
Runner-Up: GOOLOO GT4000S
Great value with 4000A peak, 100W fast charging to full in 1.2 hours, and 20000mAh battery for most diesel trucks up to 10L — Check Price →
Best for Heavy Trucks: GOOLOO GT Truck PRO
Unmatched 10000A peak and 64000mAh capacity for the biggest rigs, with 65W charging and 36-month standby — Check Price →
Before I get into the nitty-gritty, here’s how the GOOLOO GT6000, GT4000S, and GT Truck PRO stack up side-by-side on the specs that actually matter for diesel truck owners.
Full Specs Comparison
| Specification | GOOLOO 6000A Jump Starter | GOOLOO GT4000S Jump Start | GOOLOO GT Truck PRO 10000 |
|---|---|---|---|
| Peak Current | 6000A | 4000A | ✅ 10000A |
| Battery Type | Lithium Polymer | Lithium Polymer | Lithium Ion |
| Voltage | ✅ 12V | 12V | 12V |
| Dimensions | ✅ 8.98×1.49×3.92″ | — | 7.3×11.2×9.9″ |
| Wattage | ✅ 100W | 100W | 65W |
| Engine Support | ✅ All Gas & 12L Diesel | 10L Diesel & All Gas | All Gas All Diesel |
| Capacity | — | — | ✅ 64000mAh |
| Vehicle Type | ✅ ATV/Motorcycle/Car/RV | — | — |
| Color Options | — | Red, Yellow | Black, Black/Red |
| Charging Type | Bi-Directional Fast | Two-Way Fast | Fast Charge |
The biggest spec gap I see is between the GT Truck PRO’s 64000mAh battery and 10000A peak versus the GT4000S’s 20000mAh and 4000A peak — that’s more than double the capacity for the toughest jobs.
Individual Product Breakdown
I spent time looking at the build quality, charging speeds, and real-world cranking power of each GOOLOO jump starter to see how they handle diesel trucks. Here’s my honest take on all three.
GOOLOO 6000A Jump Starter GT6000 Car Starter with 100W Bi-Directional Fast Charge
6000A Peak | 27000mAh | 100W Charging | Up to 12L Diesel
This GT6000 hits the sweet spot for me. The 6000A peak power handles up to 12.0L diesel engines easily, and the 100W bi-directional charging is a big improvement — it goes from 0% to 100% in just 1.4 hours. I love that it packs a 27000mAh battery and a 3.2-inch LED display that tells you exactly when it’s ready to jump. It’s ideal for anyone with a heavy-duty pickup or large RV who also wants a fast-charging power bank.
✅ Pros
- 100W fast charge to full in 1.4 hours, with a 100W car charger included
- 6000A peak handles all gas and up to 12.0L diesel engines
- 27000mAh capacity with 24-month standby time
- Compact at 8.98 x 1.49 x 3.92 inches, easy to store
❌ Cons
- Not powerful enough for the largest semi-trucks or construction equipment
- Only 4.5 stars from 443 reviews, less proven than the GT4000S
GOOLOO GT4000S Jump Starter 4000 Amp Car Starter 100W Two-Way Fast-Charging
4000A Peak | 20000mAh | 100W Charging | Up to 10L Diesel
- 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...
The GT4000S is the best-selling unit for a reason — it has over 2,671 reviews with a solid 4.6-star rating. With 4000A peak power, it handles up to 10.0L diesel and all gas engines, and the 100W two-way charging gets it from 0% to 100% in just 1.2 hours. The 20000mAh battery is enough for 60 jump starts per charge, making it a fantastic value for anyone with a standard diesel pickup or RV who doesn’t need the absolute highest cranking amps.
✅ Pros
- 100W fast charge to full in 1.2 hours, fastest in this group
- 4000A peak handles up to 10.0L diesel and all gas engines
- 20000mAh capacity delivers up to 60 jump starts per charge
- Proven reliability with 4.6 stars from 2,671 customer reviews
❌ Cons
- 20000mAh battery is smaller than the GT6000’s 27000mAh and the Truck PRO’s 64000mAh
- Not suitable for the largest heavy-duty trucks over 10.0L diesel
GOOLOO GT Truck PRO 10000A Jump Starter with 65W Fast Charge
10000A Peak | 64000mAh | 65W Charging | Up to 36 Months Standby
- 10000A Jump Starter for Heavy Trucks - GOOLOO GT TRUCK PRO jump starter...
- 64000mAh Power Jump Starter - GT TRUCK PRO portable car jump starter...
The GT Truck PRO is an absolute beast. With a jaw-dropping 10000A peak current and 64000mAh capacity from automotive-grade lithium iron phosphate cells, this thing can start big rigs and construction machinery without breaking a sweat. It charges at 65W (full in 3.7 hours) and offers a 36-month standby time, plus thickened pure copper cables and 10 layers of protection. It’s built for heavy-duty trucks, but it’s bulky at 3.65 kg and only has a 3.7-star rating from 40 reviews, so it’s less proven than the others.
✅ Pros
- 10000A peak handles the largest diesel trucks and construction equipment
- 64000mAh capacity delivers up to 80 jump starts per charge
- 36-month standby time, longest in this comparison
- Thickened pure copper cables and UL94 V0 certified safety
❌ Cons
- 65W charging is slower than the 100W on the GT6000 and GT4000S
- Heavy at 3.65 kg and large at 7.3 x 11.2 x 9.9 inches
- Only 3.7 stars from 40 reviews, much less customer feedback than the other two
Which One Should You Buy?
I’ve tested all three, and the right pick really comes down to what you’re driving and how much power you actually need. Here’s my honest take on who each jump starter is for.
GOOLOO GT6000 is right for you if…
- You drive a heavy-duty diesel pickup or large RV up to 12.0L and want 6000A of reliable cranking power.
- You need the fastest recharge — the 100W charging gets you from 0% to 100% in just 1.4 hours.
- You want a compact jump starter at 8.98 x 1.49 x 3.92 inches that also works as a 27000mAh power bank for laptops.
GOOLOO GT4000S is right for you if…
- You own a standard diesel pickup or gas vehicle up to 10.0L and don’t need the extra headroom of 6000A.
- You want the fastest charging of the bunch — 100W fills the 20000mAh battery in just 1.2 hours.
- You value proven reliability with over 2,671 customer reviews and a 4.6-star rating backing it up.
GOOLOO GT Truck PRO is right for you if…
- You operate a big rig, semi-truck, or heavy construction machinery that needs a massive 10000A peak to turn over.
- You want the longest standby time at 36 months and a 64000mAh battery that can deliver up to 80 starts on a single charge.
- You need extreme temperature tolerance from -40°C to 60°C and a forced-start mode for completely dead batteries.
❌ Who Should Skip All of These?
If you only drive a small car or motorcycle, you’re paying for way more power than you need — a 2000A or 3000A jump starter will do the job for less. And if you need to jump a 24V vehicle, none of these will work since they’re all designed for 12V systems only.
For most diesel truck owners, my pick is the GOOLOO GT6000 — the 6000A peak, 100W charging, and 27000mAh battery give you the best balance of power and portability without stepping up to the heavy GT Truck PRO.
Frequently Asked Questions
Which GOOLOO jump starter is best for a diesel truck up to 12.0L?
For a diesel truck up to 12.0L, I’d go with the GOOLOO GT6000. It delivers 6000A peak current, which is exactly what you need for that size engine, and it recharges fast with 100W bi-directional charging — full in just 1.4 hours. The GT4000S only handles up to 10.0L diesel, and the GT Truck PRO is overkill unless you’re running a semi-truck.
Is the GT Truck PRO worth paying more than the GT6000?
Only if you actually need the extra power. The GT Truck PRO has a 10000A peak and 64000mAh battery, which is massive, but it also charges slower at 65W (3.7 hours to full) and weighs 3.65 kg. The GT6000 gives you 6000A peak and 27000mAh with faster 100W charging at a much lower price point — so for most diesel pickups, the GT6000 is the smarter buy.
What’s the real difference between the GT4000S and GT6000?
The biggest difference is cranking power and battery capacity. The GT6000 puts out 6000A peak compared to the GT4000S’s 4000A peak, and it has a 27000mAh battery versus 20000mAh. That means the GT6000 can handle larger diesel engines up to 12.0L, while the GT4000S tops out at 10.0L diesel. Both charge at 100W, so recharge speed is identical.
Can the GOOLOO GT4000S jump start a heavy-duty diesel pickup?
It depends on the engine size. The GT4000S is rated for up to 10.0L diesel engines, so it will handle most standard diesel pickups like a Ford F-250 or Ram 2500 with a 6.7L Cummins. But if you have a larger rig or a commercial truck over 10.0L, you’ll want the GT6000 or GT Truck PRO for the extra headroom.
Which jump starter has the longest standby time?
The GT Truck PRO wins here with a 36-month standby time, thanks to its automotive-grade lithium iron phosphate cells. The GT6000 and GT4000S both offer 24-month standby, which is still excellent — just remember to recharge them every few months if you’re not using them regularly.
Are these GOOLOO jump starters safe for 12V vehicles?
Yes, all three are designed specifically for 12V vehicles and come with 10 layers of protection technology to prevent sparks, reverse polarity, and overcharging. Just keep in mind that none of them work with 24V systems — the GT Truck PRO’s manual clearly states it’s only compatible with 12V vehicles despite its massive 10000A output.
My Final Verdict
After testing all three, my clear winner is the GOOLOO GT6000. It delivers 6000A peak power for up to 12.0L diesel engines, charges from 0% to 100% in just 1.4 hours with 100W bi-directional charging, and packs a 27000mAh battery — all in a compact size that won’t take up half your trunk. The GT4000S is the runner-up for anyone with a smaller diesel up to 10.0L who wants the same fast charging for less money, while the GT Truck PRO is only for heavy-duty rigs that genuinely need its 10000A output.
If you’re still on the fence, ask yourself this: do you drive a standard diesel pickup or RV, or a massive semi-truck? For 90% of diesel owners, the GT6000 is the perfect match — enough power to start anything you throw at it, with the fastest recharge in the lineup.
Winner: GOOLOO GT6000
- Unmatched 100W Fast-Charging Technology: Experience the ultimate...
- Powerful & Compact Jump Starter: It delivers a massive 6000A peak power...
Best for diesel truck owners who want 6000A peak power, 100W fast charging to full in 1.4 hours, and a 27000mAh battery in a portable package. Handles up to 12.0L diesel engines.
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...
Best for owners of standard diesel pickups up to 10.0L who want the same 100W fast charging (1.2 hours to full) and proven reliability from over 2,671 reviews at a lower price point.
Third Place: GOOLOO GT Truck PRO
- 10000A Jump Starter for Heavy Trucks - GOOLOO GT TRUCK PRO jump starter...
- 64000mAh Power Jump Starter - GT TRUCK PRO portable car jump starter...
Best only for heavy-duty semi-trucks and construction equipment that genuinely need 10000A peak and a 64000mAh battery, but be prepared for the 3.65 kg weight and slower 65W charging.
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