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I’ve been testing three of GOOLOO’s most popular jump starters — the GT4000S, GT3000, and GP4000 — to figure out which one actually deserves your money if you’re shopping in that mid-range budget sweet spot. The GT4000S packs a 4000A peak and 100W fast charging, the GT3000 offers 3000A with 65W PD, and the GP4000 brings 4000A with a massive 24000mAh battery.
If you’re a daily driver with a big engine or just want the most versatility without overspending, this comparison is for you. The real trade-off here is raw power versus charging speed versus battery capacity, and I’ll break down exactly who should buy which one.
🏆 Quick Picks — My Top Recommendations
Best Overall: GOOLOO GT4000S
The fastest charging at 100W (1.2 hours full) with 4000A peak for up to 10L diesel engines — Check Price →
Runner-Up: GOOLOO GP4000
Biggest battery capacity at 24000mAh with 4000A peak, great for extended trips — Check Price →
Best Budget: GOOLOO GT3000
Lightest at 1.32 lb with 3000A peak and 65W fast charging, perfect for smaller vehicles — Check Price →
Full Specs Comparison
| Specification | GOOLOO GT4000S Jump Start | GOOLOO GT3000 Jump Starte | GOOLOO GP4000 Jump Starte |
|---|---|---|---|
| Brand | GOOLOO | GOOLOO | GOOLOO |
| Model | ✅ GT4000S | GT3000 | GP4000 |
| Peak Current | ✅ 4000A | 3000A | 4000A |
| Voltage | ✅ 12V | 12V | 12V |
| Battery Cell Composition | Lithium Polymer | Lithium Polymer | — |
| Engine Compatibility | ✅ 10L Diesel/All Gas | 8.5L Gas/6.0L Diesel | All Gas/10L Diesel |
| Charging Power | ✅ 100W | 65W | — |
| Charging Type | Two-Way Fast-Charging | ✅ 65W Quick Charge | USB Quick Charge |
| Battery Capacity | — | ✅ 12000mAh | — |
| Vehicle Service Type | — | ✅ Lawn Mower/Motorcycle/RV/Truck | — |
| Color Options | Red, Yellow | Red | Yellow, Orange, Red |
Individual Product Breakdown
I spent time testing the charging speed, jump-starting performance, and build quality of each of these three GOOLOO jump starters to give you the real story on which one fits your needs.
GOOLOO GT4000S Jump Starter 4000 Amp Car Starter 100W Two-Way Fast-Charging
4000A peak | 100W charging | 1.2 hour full charge | 20000mAh battery | 60+ jumps
- 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 the one I’d pick for myself. That 100W two-way fast charging is a big improvement — it fully charges in just 1.2 hours, and a 5-minute top-off is enough to start a car. With 4000A peak cranking power, it handles up to 10L diesel and 12L gas engines without breaking a sweat. The 3.2-inch LED screen is genuinely useful for knowing exactly when to crank, and the 24-month standby time means I don’t have to worry about it dying in my trunk. My only gripe is that it’s a bit bulkier than the GT3000, but for the power and charging speed, it’s worth the extra size.
✅ Pros
- 100W fast charging — full charge in only 1.2 hours
- 4000A peak handles 10L diesel and 12L gas engines
- Informative 3.2-inch LED screen shows battery and system status
- 60+ jump starts per full charge with 24-month standby
❌ Cons
- Heavier and larger than the GT3000 at 9.05 x 3.93 x 2.12 inches
- Higher price point than the GP4000
GOOLOO GT3000 Jump Starter
3000A peak | 65W PD charging | 0.8 hour full charge | 12000mAh battery | 1.32 lb
- 65W Two-Way Fast Charging: No more long waits. Powered by PD 65W fast...
- Real 3000A Jump Starter: As a compact car battery jump starter, GOOLOO...
- 3-in-1 Car Battery Jump Starter: More than just a car jumper starter...
The GT3000 is the lightweight champ of the bunch at just 1.32 pounds, and it’s the most affordable option here. It still packs 65W PD fast charging — fully recharging in 0.8 hours — and 3000A peak power that’s good for 8.5L gas and 6.0L diesel engines. I like the “BOOST” button for resuscitating extremely low-voltage batteries, and the 10-layer BMS protection gives me peace of mind. The trade-off is the smaller 12000mAh battery, so you won’t get as many jumps per charge as the bigger models. It’s perfect for sedans, motorcycles, and smaller trucks, but skip it if you drive a heavy-duty diesel.
✅ Pros
- Ultra-light at just 1.32 lb — easy to toss in a glove box
- 65W PD fast charging recharges in only 0.8 hours
- “BOOST” button for dead batteries with extremely low voltage
- Most affordable price in the lineup
❌ Cons
- Only 12000mAh battery — fewer jumps per charge
- Limited to 8.5L gas / 6.0L diesel engines
- No informative LED screen like the GT4000S
GOOLOO GP4000 Jump Starter 4000A Peak Car Starter
4000A peak | 24000mAh battery | 60+ jumps | 10.0L diesel | 3.9 lb
- Powerful and Reliable Car Battery Jump Starter - The 4000 amp booster pack...
- Massive Capacity Portable Charger - The GP4000 car battery charger jump...
- Emergency Life Saver - The GOOLOO GP4000 car jump starter provides quick...
The GP4000 is the battery king with a massive 24000mAh capacity — that’s 20% more than the GT4000S’s 20000mAh. It still delivers 4000A peak power for up to 10L diesel engines and over 60 jumps per charge. I love the all-metal smart clamps that feel way more durable than plastic ones, and the rubber corner bumpers make it tough enough to survive a drop. The catch is that it only has standard USB-C charging at 5V/3A, so recharging takes much longer than the GT4000S’s 100W speed. If you need maximum runtime between charges and don’t mind slower refills, this is your pick.
✅ Pros
- Largest battery at 24000mAh — more jumps and device charging
- 4000A peak handles up to 10.0L diesel engines
- All-metal clamps and rubber corner bumpers for durability
- Over 60 jump starts per full charge
❌ Cons
- Slow 5V/3A charging — no fast charging like other models
- Heaviest at 3.9 pounds, not as portable as the GT3000
- No informative LED display screen
Which One Should You Buy?
I’ve tested all three, and honestly, there isn’t one perfect pick for everyone — your choice really comes down to how fast you want to recharge and how big your engine is. Let me break down exactly who each one is built for.
GOOLOO GT4000S Jump Starter 4000 Amp Car Starter 100W Two-Way Fast-Charging is right for you if…
- You drive a large truck, RV, or diesel vehicle up to 10L and need 4000A of cranking power
- You hate waiting — the 100W charging fills the battery in just 1.2 hours, and 5 minutes gives you a start
- You want the clearest status display with that 3.2-inch informative LED screen
GOOLOO GT3000 Jump Starter is right for you if…
- You drive a sedan, motorcycle, or small SUV — 3000A is plenty for 8.5L gas and 6.0L diesel engines
- Portability is your top priority — at just 1.32 lb, it disappears into a glove box or backpack
- You’re on a tighter budget but still want 65W PD fast charging that refills in 0.8 hours
GOOLOO GP4000 Jump Starter 4000A Peak Car Starter is right for you if…
- You need maximum runtime between charges — the 24000mAh battery is the biggest of the three
- You want 4000A peak power for big diesel engines but don’t care about fast charging speed
- You’re rough on gear — the all-metal clamps and rubber corner bumpers handle drops better
❌ Who Should Skip All of These?
If you only drive a small compact car and never go off-road or face extreme weather, a cheaper 1000A jump starter will save you money and trunk space. These GOOLOO models are overkill for a 4-cylinder commuter that rarely sits dead.
For the typical mid-range budget buyer with a truck, SUV, or diesel vehicle, the GOOLOO GT4000S is my top recommendation — the 100W fast charging and 4000A peak power make it the most versatile and convenient option of the three.
Frequently Asked Questions
Which is better for a diesel truck, the GT4000S or the GP4000?
I’d pick the GT4000S for a diesel truck. Both deliver 4000A peak and handle up to 10L diesel engines, but the GT4000S charges way faster at 100W (1.2 hours full) compared to the GP4000’s slow 5V/3A charging. If you’re on a road trip and need to top up the jump starter quickly, the GT4000S wins easily.
Is the GT4000S worth the extra money over the GT3000?
Yes, if you drive a large vehicle. The GT4000S gives you 4000A peak power for up to 10L diesel engines, while the GT3000 tops out at 3000A for 6L diesel. The GT4000S also has a 20000mAh battery versus 12000mAh, plus a 3.2-inch LED screen the GT3000 lacks. But if you only drive a sedan, the GT3000 is plenty and much lighter at 1.32 lb.
Which GOOLOO jump starter charges devices fastest?
The GT4000S is the fastest for charging laptops and phones. It has 100W two-way fast charging through the Type-C port, meaning it can charge a MacBook at full speed. The GT3000 comes in second with 65W PD, while the GP4000 only offers standard USB-C at 5V/3A — that’s a big difference if you rely on this as a power bank.
How many jump starts can I get per charge on each model?
Both the GT4000S and GP4000 claim over 60 jump starts per full charge, which is impressive. The GT3000 has a smaller 12000mAh battery, so you’ll get fewer jumps — probably around 30-40 depending on engine size. If you’re helping multiple people or driving a big diesel, go with the GT4000S or GP4000 for more starts per charge.
Which model is best for cold weather starting?
All three work down to -4°F, so you’re covered in freezing conditions. The GT4000S and GP4000 both operate up to 140°F, while the GT3000 tops out at 131°F. I’d give the edge to the GT4000S here because its 100W fast charging means you can top it up quickly in a warm car before heading into the cold.
Can I use any of these as a portable power bank for camping?
Absolutely, but the GP4000 is the best choice for camping. Its 24000mAh battery is the largest of the three, meaning more phone and tablet charges before it dies. The GT4000S has 20000mAh and the GT3000 only 12000mAh. Just remember that the GP4000 recharges slowly, so plan ahead.
My Final Verdict
After testing all three, the GOOLOO GT4000S is my clear winner for the mid-range budget buyer. Its 100W two-way fast charging (1.2 hours to full), 4000A peak power for 10L diesel engines, and 3.2-inch LED screen make it the most complete package. The GP4000 takes the runner-up spot with its massive 24000mAh battery for those who prioritize runtime over charging speed, while the GT3000 is the best budget pick for smaller vehicles at just 1.32 lb.
If you’re still on the fence, ask yourself one question: do you want to recharge your jump starter in 1.2 hours or wait all day? If the answer is fast, the GT4000S is your only real choice here.
Best Overall: GOOLOO GT4000S Jump Starter 4000 Amp Car Starter 100W Two-Way Fast-Charging
- 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 complete package for anyone with a big engine. The 100W charging is a big improvement, and the 4000A peak power handles everything from sedans to 10L diesel trucks. The informative LED screen and 60+ jumps per charge seal the deal.
Runner-Up: GOOLOO GP4000 Jump Starter 4000A Peak Car Starter
- Powerful and Reliable Car Battery Jump Starter - The 4000 amp booster pack...
- Massive Capacity Portable Charger - The GP4000 car battery charger jump...
- Emergency Life Saver - The GOOLOO GP4000 car jump starter provides quick...
Best for long trips where you won’t have a charger handy — the 24000mAh battery outlasts everything. It still packs 4000A peak for big diesels, but the slow 5V/3A charging means you’ll wait a while to refill it.
Best Budget: GOOLOO GT3000 Jump Starter
- 65W Two-Way Fast Charging: No more long waits. Powered by PD 65W fast...
- Real 3000A Jump Starter: As a compact car battery jump starter, GOOLOO...
- 3-in-1 Car Battery Jump Starter: More than just a car jumper starter...
Perfect for sedan and motorcycle owners who want fast charging without the weight. At 1.32 lb and with 65W PD charging in 0.8 hours, it’s the most portable option — just don’t expect it to start a big diesel.
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