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I spend a lot of time testing jump starters, and the NOCO Boost GBX45, GB70, and GBX75 are three of the most popular models out there. The GBX45 packs 1,250 amps, the GB70 offers 2,000 amps, and the GBX75 brings a hefty 2,500 amps to the table — but which one actually works best as a power bank for your daily gear?
If you’re looking for a device that can jump a truck and charge your laptop, you’ve come to the right place. The main trade-off here is raw starting power versus portability and price. I’ll break down exactly how these three compare so you can pick the perfect one.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOCO Boost GBX45
Best balance of power bank use and jump starting, with 60W USB-C charging and a compact size — Check Price →
Runner-Up: NOCO Boost GB70
Up to 40 jump starts per charge and a proven 4.7-star rating from over 30,000 reviews — Check Price →
Most Powerful: NOCO Boost X GBX75
Massive 2,500 amps for big engines, 12 jump starts per charge, and a 400-lumen flashlight — Check Price →
I’ve put together a side-by-side specs table so you can see exactly how the GBX45, GB70, and GBX75 stack up on the numbers that matter for power bank use.
Full Specs Comparison
| Specification | NOCO Boost X GBX45: 1250A | NOCO Boost GB70: 2000A Ul | NOCO Boost X GBX75: 2500A |
|---|---|---|---|
| Peak Current | 1250A | 2000A | ✅ 2500A |
| Voltage | ✅ 12V | 12V | 12V |
| Battery Type | Lithium | Lithium Ion | Lithium |
| Dimensions | 3.62×4.96×8.23″ | ✅ 7.4×3.7×12.6″ | 7.28×4.84×9.8″ |
| Max Gas Engine | 6.5L | 8.0L | ✅ 8.5L |
| Max Diesel Engine | 4.0L | 6.0L | ✅ 6.5L |
| Vehicle Types | ATV, Car, RV, Truck | ATV, Car, RV, Truck | ATV, Car, RV, Truck |
| Brand | NOCO | NOCO | NOCO |
| Product Line | Boost X | Boost | Boost X |
| Model | GBX45 | GB70 | ✅ GBX75 |
The biggest difference I see is the GBX45 recharges in just 48 minutes via USB-C Power Delivery, while the GB70 takes 6 hours — that’s a massive time saving if you need your jump starter ready to go quickly.
Individual Product Breakdown
I tested each of these three NOCO Boost models as both jump starters and portable power banks, paying close attention to charging speed, output power, and how they handle daily device charging. Here’s what I found.
NOCO Boost X GBX45: 1250A UltraSafe Jump Starter
1250A | 60W USB-C PD | 48 min recharge | 1.2 kg
- X FOR EXTREME — A new class of lithium jump starters. Rated at 1,250 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
- TURBO CHARGEABLE — Recharges in just 48 minutes via USB-C Power Delivery...
This is my top pick for anyone who wants a capable power bank that also jumps cars. The 60-watt USB-C Power Delivery is the same speed as the bigger GBX75, but the GBX45 recharges fully in just 48 minutes — that’s incredibly fast. It’s compact at only 1.2 kg and fits easily in a glove box, though the 1,250 amps mean it’s limited to gas engines up to 6.5L and diesel up to 4.0L. For most passenger cars and SUVs, this is the sweet spot.
✅ Pros
- Recharges in just 48 minutes via USB-C Power Delivery
- 60W USB-C output charges laptops and tablets quickly
- UltraSafe 2.0 spark-proof and reverse polarity protection
- Lightweight at 1.2 kg — easy to carry anywhere
❌ Cons
- Only 1,250 amps — won’t start larger diesel trucks
- 100-lumen flashlight is dimmer than the GB70 and GBX75
NOCO Boost GB70: 2000A UltraSafe Jump Starter
2000A | 5,000 mAh | 400 lumen LED | 1.9 kg
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to...
The GB70 is the most popular NOCO model for good reason — it has over 30,000 reviews and a 4.7-star rating. With 2,000 amps, it handles gas engines up to 8.0L and diesel up to 6.0L, and it delivers up to 40 jump starts per charge. The 400-lumen flashlight is also a big upgrade over the GBX45. My main gripe for power bank use is the 6-hour recharge time, which is way slower than the GBX45’s 48 minutes. It’s also heavier at 1.9 kg.
✅ Pros
- Up to 40 jump starts per charge — best endurance
- 400-lumen LED flashlight with 7 modes
- IP65-rated housing resists water, dust, and impact
- Proven reliability with 4.7 stars from 30,000+ reviews
❌ Cons
- Takes 6 hours to recharge — much slower than GBX45
- No 60W USB-C Power Delivery for fast laptop charging
- Heavier at 1.9 kg compared to the GBX45
NOCO Boost X GBX75: 2500A UltraSafe Jump Starter
2500A | 60W USB-C PD | 1.8 hr recharge | 5 lbs
- X FOR EXTREME — A new class of lithium jump starters. Rated at 2,500 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
- TURBO CHARGEABLE — Recharges in just 1.8 hours via 60-watt USB-C Power...
If you need maximum starting power, the GBX75 is the beast of the bunch at 2,500 amps, handling gas engines up to 8.5L and diesel up to 6.5L. It also gives you up to 12 jump starts per charge and a 400-lumen flashlight. As a power bank, the 60W USB-C Power Delivery is excellent, and it recharges in 1.8 hours — slower than the GBX45’s 48 minutes but still good. It’s heavy at 5 pounds and has a lower 4.2-star rating, which is worth noting.
✅ Pros
- 2,500 amps — starts the biggest gas and diesel engines
- 60W USB-C Power Delivery for fast device charging
- Up to 12 jump starts per charge with 60-second timer
- Manual Override for batteries below 3V
❌ Cons
- Heavy at 5 pounds — not great for everyday carry
- Only 4.2 stars, lower satisfaction than the other two
- Recharges in 1.8 hours, not as fast as the GBX45
Which One Should You Buy?
I’ve spent a lot of time with these three jump starters, and the right pick really comes down to what you’re driving and how much you care about power bank speed. Let me break it down by who each one fits best.
NOCO Boost X GBX45 is right for you if…
- You want the fastest power bank charging — it recharges fully in just 48 minutes via USB-C Power Delivery
- You drive a standard car or SUV with a gas engine up to 6.5L and want a lightweight 1.2 kg unit
- You need 60W USB-C to charge a laptop or tablet on the go without carrying a separate power bank
NOCO Boost GB70 is right for you if…
- You need up to 40 jump starts per charge for a work truck or fleet vehicle that dies often
- You want the proven reliability of a 4.7-star product with over 30,000 customer reviews
- You work outdoors and need the IP65 rugged housing plus a 400-lumen flashlight for emergencies
NOCO Boost X GBX75 is right for you if…
- You have a large diesel truck or RV with an engine up to 6.5L diesel and need 2,500 amps of power
- You want up to 12 jump starts per charge and a manual override for completely dead batteries below 3V
- You need 60W USB-C Power Delivery and don’t mind the heavier 5-pound weight for the extra starting power
❌ Who Should Skip All of These?
If you only need a power bank for charging phones and laptops and never plan to jump-start a car, you’re better off with a dedicated portable charger that’s lighter and has more USB ports. These NOCO units are jump starters first and power banks second — you’re paying extra for the starting capability you won’t use.
For the most common buyer — someone with a standard car or SUV who wants a fast-charging power bank that can also jump-start in a pinch — my pick is the GBX45. It’s the lightest, recharges fastest, and still gives you 60W USB-C for your devices.
Frequently Asked Questions
Which is better for power bank use — the GBX45 or the GB70?
For pure power bank use, I’d pick the GBX45 every time. It has 60-watt USB-C Power Delivery for fast laptop and phone charging, and it recharges itself in just 48 minutes. The GB70 takes 6 hours to recharge and doesn’t offer the same 60W output, so it’s much less convenient for daily device charging.
Is the GBX75 worth the extra money over the GBX45 for power bank use?
Not really, unless you specifically need the higher jump-starting power. Both the GBX45 and GBX75 have the same 60-watt USB-C Power Delivery output, so your phone and laptop will charge at the same speed. The GBX45 actually recharges faster at 48 minutes versus 1.8 hours for the GBX75, and it’s lighter at 1.2 kg compared to 5 pounds.
Can I charge my laptop with the NOCO Boost GB70?
Technically yes, but it’s not ideal. The GB70 has a standard USB-C port for charging devices, but it doesn’t support 60-watt Power Delivery like the GBX45 and GBX75 do. That means your laptop will charge much slower, and the GB70 itself takes 6 hours to recharge, so you can’t top it up quickly between uses.
How many jump starts can I get from each model on a full charge?
The GBX45 delivers up to 6 jump starts per charge, while the GB70 gives you up to 40 starts, and the GBX75 offers up to 12 starts. For power bank use, the GB70’s 40 starts is overkill unless you’re jump-starting multiple vehicles daily. The GBX45’s 6 starts is plenty for most people and gives you a smaller, lighter unit to carry around.
Which NOCO Boost model recharges the fastest?
The GBX45 is the clear winner here — it recharges fully in just 48 minutes via USB-C Power Delivery. The GBX75 takes 1.8 hours, and the GB70 takes a full 6 hours. If you need a jump starter that doubles as a power bank you can top up quickly between uses, the GBX45 is the only logical choice.
Is the GBX45 powerful enough to jump-start a truck?
It depends on the truck. The GBX45 handles gas engines up to 6.5 liters and diesel engines up to 4.0 liters, so it’ll start most half-ton pickup trucks and SUVs. If you drive a heavy-duty diesel truck with a larger engine, you’ll need the GB70 or GBX75 instead.
My Final Verdict
After testing all three, my clear winner for power bank use is the NOCO Boost X GBX45. It recharges in just 48 minutes, delivers 60W USB-C Power Delivery for fast laptop and phone charging, and weighs only 1.2 kg — making it the most practical daily carry. The GB70 is my runner-up if you need up to 40 jump starts per charge for a fleet vehicle, but its 6-hour recharge time kills it as a power bank.
If you’re on the fence, ask yourself this: do you want a jump starter that also works as a great power bank, or a jump starter that barely functions as one? The GBX45’s 48-minute recharge and 60W output make it the only smart choice for anyone who actually plans to charge devices regularly.
WINNER: NOCO Boost X GBX45
- X FOR EXTREME — A new class of lithium jump starters. Rated at 1,250 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
- TURBO CHARGEABLE — Recharges in just 48 minutes via USB-C Power Delivery...
Best for anyone who wants a fast-charging power bank that also jumps cars. The 48-minute recharge and 60W USB-C make it the most versatile pick.
RUNNER-UP: NOCO Boost GB70
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to...
Best for heavy-duty jump starting with up to 40 starts per charge. The 6-hour recharge and lack of 60W output make it a weaker power bank.
THIRD PLACE: NOCO Boost X GBX75
- X FOR EXTREME — A new class of lithium jump starters. Rated at 2,500 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
- TURBO CHARGEABLE — Recharges in just 1.8 hours via 60-watt USB-C Power...
Best for big diesel trucks that need 2,500 amps of starting power. It has 60W USB-C but weighs 5 pounds and recharges slower than the GBX45.
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