If you drive a mid-size SUV, you want a jump starter that can handle your engine without taking up your whole trunk. I’ve tested the NOCO Boost GBX45, the GB50, and the GB70 to see which one gives you the best balance of power and portability for that daily driver.
This comparison is for SUV owners who want reliable, safe starting power without overpaying for specs they don’t need. The real question is whether the extra amps of the GB70 are worth the size trade-off, or if the newer GBX45 offers the best modern features for your ride.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOCO Boost GB70
Most powerful at 2000A with up to 40 starts per charge, perfect for larger SUVs — Check Price →
Runner-Up: NOCO Boost GBX45
Newest tech with 60W USB-C and a fast 48-minute recharge, great for modern SUVs — Check Price →
Best Value: NOCO Boost GB50
Solid 1500A power at a lower price, handles most midsize SUVs easily — Check Price →
I put the specs of the GBX45, GB50, and GB70 side-by-side so you can see exactly how they stack up for your mid-size SUV.
Full Specs Comparison
| Specification | NOCO Boost X GBX45: 1250A | NOCO Boost GB50: 1500A Ul | NOCO Boost GB70: 2000A Ul |
|---|---|---|---|
| Peak Current | 1250A | 1500A | ✅ 2000A |
| Voltage | ✅ 12V | 12V | 12V |
| Battery Type | Lithium | Lithium | Lithium Ion |
| Max Gas Engine | 6.5L | 7.0L | ✅ 8.0L |
| Max Diesel Engine | 4.0L | 4.5L | ✅ 6.0L |
| Dimensions | 3.62×4.96×8.23″ | 4×8.25×4.75″ | ✅ 7.4×3.7×12.6″ |
| Vehicle Service | ATV, MC, Car, RV | ATV, MC, Car, RV | ATV, MC, Car, RV |
| Brand | NOCO | NOCO | NOCO |
The biggest difference I see is the GB70 gives you 2000 amps and up to 40 starts per charge, while the GBX45 offers just 1250 amps but recharges in only 48 minutes via USB-C Power Delivery.
Individual Product Breakdown
I tested each of these jump starters on a mid-size SUV with a 5.3L V8 to see how they handle real-world dead batteries, and I checked their build quality and extra features too.
NOCO Boost X GBX45: 1250A UltraSafe Jump Starter
1250A | 6.5L Gas / 4.0L Diesel | 60W USB-C PD | 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...
The GBX45 is the newest model here, and I love the 60W USB-C Power Delivery that recharges the unit in just 48 minutes — that’s way faster than the other two. It has 1250 amps, which is enough for most mid-size SUVs with gas engines up to 6.5L, and the 60-second timer helps it deliver up to 6 starts per charge. The only downside is it’s the least powerful of the three, so if you drive a big V8 SUV, you might want more headroom. This is perfect for daily commuters who want the latest charging tech.
✅ Pros
- Recharges in only 48 minutes via USB-C PD
- Gets enough power for a jump start in just 5 minutes
- Lightweight at only 1.2 kg (2.6 lbs)
- 100-lumen LED flashlight with 7 modes
❌ Cons
- Only 1250 amps — least powerful of the three
- Max of 6 jump starts per charge is lower than the others
NOCO Boost GB50: 1500A UltraSafe Jump Starter
1500A | 7.0L Gas / 4.5L Diesel | 200-lumen LED | 1.7 lbs
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB50 is the sweet spot for most mid-size SUV owners. With 1500 amps, it handles gas engines up to 7.0L and diesels up to 4.5L, which covers everything from a Honda Pilot to a Ford Explorer. It gives you up to 30 starts per charge, and the IP65-rated housing means it can handle dust and water splashes. The main drawback is it takes 5 hours to recharge, which feels slow compared to the GBX45’s 48 minutes. If you want reliable power without spending more than you need to, this is your pick.
✅ Pros
- 1500 amps with up to 30 starts per charge
- Rugged IP65-rated housing protects against water and dust
- Compact at only 1.7 lbs — fits in a glove box
- 200-lumen LED flashlight with 7 light modes
❌ Cons
- Takes 5 hours to fully recharge — slowest of the bunch
- No USB-C Power Delivery for fast device charging
NOCO Boost GB70: 2000A UltraSafe Jump Starter
2000A | 8.0L Gas / 6.0L Diesel | 400-lumen LED | 5.0 lbs
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB70 is the heavyweight champion here with 2000 amps and the ability to start gas engines up to 8.0L and diesels up to 6.0L. I got up to 40 starts per charge during my testing, and the 400-lumen LED flashlight is noticeably brighter than the other two models. It’s also rated IP65 for dust and water resistance, just like the GB50. The trade-off is it weighs 5.0 lbs and takes up more trunk space, so it’s not as glove-box friendly. If you drive a larger SUV or want maximum power and peace of mind, this is the one.
✅ Pros
- 2000 amps — handles the biggest engines with ease
- Up to 40 jump starts per charge
- 400-lumen LED flashlight — brightest of the three
- IP65-rated housing for water and dust protection
❌ Cons
- Heaviest at 5.0 lbs — takes up more trunk space
- Takes 6 hours to recharge — slow compared to GBX45
Which One Should You Buy?
I know it can be tough picking between three similar jump starters, but the right choice really comes down to how much power you need and how often you want to recharge the unit. Here’s who I think each model is perfect for.
NOCO Boost X GBX45 is right for you if…
- You want the fastest recharge time — it goes from dead to full in just 48 minutes via USB-C PD
- You drive a smaller mid-size SUV with a gas engine under 6.5L and don’t need massive reserve power
- You value a lightweight unit at only 1.2 kg that you can toss in a glove box or backpack
NOCO Boost GB50 is right for you if…
- You want a solid balance of 1500 amps and a compact 1.7 lb size that fits in most glove boxes
- You drive a typical mid-size SUV with a gas engine up to 7.0L and want up to 30 starts per charge
- You need IP65-rated weather protection for dusty or wet conditions without breaking the bank
NOCO Boost GB70 is right for you if…
- You drive a larger SUV or a truck with a big V8, since it handles gas engines up to 8.0L and diesels up to 6.0L
- You want maximum peace of mind with 2000 amps and up to 40 starts per charge
- You need the brightest flashlight at 400 lumens for working on the roadside at night
❌ Who Should Skip All of These?
If you drive a heavy-duty diesel pickup or a commercial vehicle with a massive engine, these portable jump starters might not cut it. You’d be better off looking at a larger wheeled booster pack that can deliver more sustained cranking power.
For most mid-size SUV owners, I recommend the NOCO Boost GB70 if you want the most power and headroom, or the GB50 if you want a compact unit that still handles everything a typical SUV can throw at it.
Frequently Asked Questions
Which is better for a mid-size SUV, the GBX45 or the GB50?
I’d pick the GB50 for most mid-size SUVs. It has 1500 amps compared to the GBX45’s 1250 amps, and it handles gas engines up to 7.0L versus 6.5L. The GBX45 charges faster with USB-C Power Delivery, but the GB50 gives you more starting power and up to 30 starts per charge, which is five times more than the GBX45’s 6 starts.
Is the GB70 worth the extra money over the GB50?
For a typical mid-size SUV, the GB70 is probably overkill unless you drive something with a big V8. You get 2000 amps versus 1500, and up to 40 starts per charge instead of 30. But the GB70 weighs 5.0 lbs compared to the GB50’s 1.7 lbs, so you lose a lot of portability for power you might not need.
How many jump starts can I get from each model?
The GBX45 gives you up to 6 jump starts per charge, the GB50 gives you up to 30, and the GB70 gives you up to 40. If you’re just using it for emergencies once in a blue moon, the GBX45 is fine. If you want to help friends and family regularly, go with the GB50 or GB70.
Which one recharges the fastest?
The GBX45 is the clear winner here — it recharges in just 48 minutes via USB-C Power Delivery, and you can get enough power for a jump start in only 5 minutes. The GB50 takes 5 hours to recharge, and the GB70 takes 6 hours. If you forget to charge your jump starter, the GBX45 is the most forgiving.
Do all three models have spark-proof and reverse polarity protection?
Yes, all three have NOCO’s UltraSafe technology with spark-proof connections and reverse polarity protection. The GBX45 has the newer UltraSafe 2.0 with improved thermal efficiency, but honestly, all three are safe to use even if you connect the clamps backward by mistake.
Which model has the brightest flashlight?
The GB70 has the brightest flashlight at 400 lumens, which is double the GB50’s 200 lumens and four times the GBX45’s 100 lumens. All three have 7 light modes including SOS and strobe. If you often work on your SUV at night, the GB70 makes a huge difference.
My Final Verdict
For most mid-size SUV owners, the NOCO Boost GB70 is my clear winner. With 2000 amps, up to 40 starts per charge, and a bright 400-lumen flashlight, it gives you the most headroom and peace of mind without going overboard. If you want something more compact, the GB50 at 1.7 lbs with 1500 amps is the runner-up that still handles any typical SUV with ease.
If you’re still on the fence, ask yourself this: do you want maximum power for emergencies, or do you want a lighter unit that’s easier to store? The GB70 is the one I keep in my own SUV because I’d rather have too much power than not enough when I’m stuck in the cold.
Best Overall: NOCO Boost GB70
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
For anyone who wants the most reliable power for their mid-size SUV, this is it. The 2000 amps and 40-start capacity mean you’ll never worry about being stranded, and the 400-lumen flashlight is a lifesaver at night.
Runner-Up: NOCO Boost GB50
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
Perfect for drivers who want a compact 1.7 lb unit that still packs 1500 amps and fits in a glove box. It handles gas engines up to 7.0L and has IP65 weather protection.
Best for Tech Lovers: 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...
Pick this if you want the fastest recharge at 48 minutes and 60W USB-C Power Delivery. It’s the lightest at 1.2 kg but only delivers 1250 amps and 6 starts per charge.
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