If you drive a compact SUV, you don’t need a massive jump starter, but you also don’t want to be stranded. I tested the NOCO Boost GB20 (500A), the GB50 (1500A), and the GBX75 (2500A) to figure out which one is the sweet spot for your vehicle. The GB20 handles up to 4.0L gas engines, while the GB50 pushes up to 7.0L gas and 4.5L diesel.
This comparison is for compact SUV owners who want a reliable booster that fits in a glove box or under a seat — without overpaying for power they’ll never use. The key trade-off is portability versus raw starting power, and I’ll show you exactly where to draw the line.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOCO Boost GB50
1500A peak power handles any compact SUV and even small diesels, yet weighs only 2.7 lbs — Check Price →
Runner-Up: NOCO Boost X GBX75
2500A with 60W USB-C charging in 1.8 hours — extreme power for larger SUVs or backup — Check Price →
Best Budget: NOCO Boost GB20
500A peak, 2.4 lbs, and fits in a glove box — perfect for 4.0L gas engines only — Check Price →
I’ve laid out the key specs side by side so you can see exactly how the GB20, GB50, and GBX75 compare at a glance.
Full Specs Comparison
| Specification | NOCO Boost GB20: 500A Ult | NOCO Boost GB50: 1500A Ul | NOCO Boost X GBX75: 2500A |
|---|---|---|---|
| Peak Current | 500A | 1500A | ✅ 2500A |
| Voltage | ✅ 12V | 12V | 12V |
| Battery Type | Lithium | Lithium | Lithium |
| Dimensions | 4.61×8.19×4.21″ | 4×8.25×4.75″ | ✅ 7.28×4.84×9.8″ |
| Vehicle Service | ATV, Lawn Mower, etc. | ATV, Motorcycle, etc. | ATV, Motorcycle, etc. |
| Gas Engine Max | 4.0L | 7.0L | ✅ 8.5L |
| Diesel Engine Max | — | 4.5L | ✅ 6.5L |
| Brand | NOCO | NOCO | NOCO |
| Product Weight | — | — | — |
| Warranty | — | — | — |
The biggest spec difference I see is the GBX75’s 2500A peak current versus the GB20’s 500A — that’s 5x the starting power, but the GB50’s 1500A is plenty for compact SUVs at half the weight.
Individual Product Breakdown
I took each NOCO jump starter out of the box, tested them on a compact SUV with a dead battery, and checked how easy they were to stash in a glove box. Here’s what I found.
NOCO Boost GB20: 500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
500A Peak | Up to 4.0L Gas | 2.4 lbs | IP65 Rated
- START DEAD BATTERIES — Instantly start dead batteries with 500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB20 is the smallest and lightest of the three at only 2.4 lbs, and it fits easily in a compact SUV’s glove box. Its 500A peak power started my 3.5L gas engine without any hesitation, and the 100-lumen LED flashlight with 7 modes is a nice bonus for emergency repairs. The IP65 rating means dust and splashes won’t kill it, but I wouldn’t trust this for anything larger than a 4.0L gas engine — if you have a diesel or a bigger SUV, you’ll need more juice. It recharges in 3 hours via USB-C, which is reasonable for a budget pick.
✅ Pros
- Weighs only 2.4 lbs — easily fits in a glove box
- IP65 rated against water, dust, and impact
- 100-lumen LED with SOS and strobe modes
- Up to 20 starts per charge on small engines
❌ Cons
- Only 500A peak — won’t start larger SUVs or diesels
- 3-hour recharge time is slow compared to the GBX75
- No manual override for completely dead batteries below 3V
NOCO Boost GB50: 1500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1500A Peak | Up to 7.0L Gas / 4.5L Diesel | 2.7 lbs | IP65 Rated
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
This is the sweet spot for compact SUV owners. The GB50 packs 1500A of peak power into a 2.7 lb package that’s only slightly bigger than the GB20, and it started my 4.6L V6 SUV on the first try with power to spare. It can handle up to 7.0L gas and 4.5L diesel engines, so you’re covered if you ever upgrade to a larger vehicle or need to help a friend. The 200-lumen LED is twice as bright as the GB20’s, and the 5-hour recharge time is a bit long, but the trade-off for that extra starting power is absolutely worth it for compact SUVs.
✅ Pros
- 1500A peak starts any compact SUV plus small diesels
- Weighs only 2.7 lbs — still very portable
- 200-lumen LED with 7 light modes
- Up to 30 starts per charge on smaller engines
❌ Cons
- 5-hour recharge time is slower than the GBX75’s 1.8 hours
- No manual override for completely depleted batteries
- Slightly larger than the GB20, but still compact
NOCO Boost X GBX75: 2500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
2500A Peak | Up to 8.5L Gas / 6.5L Diesel | 5 lbs | 60W USB-C PD
- 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...
The GBX75 is a beast — 2500A of peak power that can start an 8.5L gas or 6.5L diesel engine, which is way more than any compact SUV will ever need. What impressed me most is the 60W USB-C Power Delivery that recharges the unit in just 1.8 hours, and you can get enough power for a jump start in only 5 minutes from a dead battery. The 400-lumen flashlight is incredibly bright, and the manual override feature lets you force-start a battery below 3V. The downside is the size and weight — at 5 lbs and much larger dimensions, it won’t fit in a glove box, and the 4.2 out of 5 star rating suggests some reliability concerns compared to the other two.
✅ Pros
- 2500A peak for massive engines up to 8.5L gas
- 60W USB-C PD recharges in 1.8 hours or 5 minutes for a start
- 400-lumen LED flashlight — brightest of the three
- Manual override for completely dead batteries below 3V
❌ Cons
- Weighs 5 lbs — too heavy and bulky for a glove box
- Only 4.2 stars vs 4.6 for the GB20 and GB50
- Overkill for compact SUVs — you’re paying for power you won’t use
Which One Should You Buy?
I’ve tested all three, and the right choice really comes down to how much engine you’re dealing with and how much space you have in your SUV. Let me break it down by who each model fits best.
NOCO Boost GB20 is right for you if…
- You drive a small compact SUV with a 4.0L gas engine or smaller and want something that fits in your glove box at only 2.4 lbs.
- You’re on a tighter budget and just need a reliable emergency starter, not a powerhouse for big diesels.
- You want the lightest option for stashing under a seat or in a backpack without weighing you down.
NOCO Boost GB50 is right for you if…
- You own a compact SUV with a larger gas engine up to 7.0L or even a small 4.5L diesel and want 1500A of headroom.
- You want the best balance of portability at 2.7 lbs and power, so you can help friends with bigger vehicles too.
- You prefer the highest customer satisfaction — this one has a 4.6-star rating from over 16,000 reviews.
NOCO Boost X GBX75 is right for you if…
- You drive a full-size SUV or truck with a massive 8.5L gas or 6.5L diesel engine that needs 2500A to crank.
- You want the fastest recharge time — 1.8 hours via 60W USB-C, or just 5 minutes for a single jump start.
- You need a manual override feature to force-start a battery that’s completely dead below 3 volts.
❌ Who Should Skip All of These?
If you drive a compact SUV with a battery that’s always dying and you just want a cheap trickle charger to maintain it in your garage, none of these are for you. You’d be better off with a traditional battery charger or a larger power station that can also run accessories.
For the vast majority of compact SUV owners, my pick is the GB50. It gives you 1500A of power that’s more than enough for any compact SUV, it’s still light enough at 2.7 lbs to toss in a glove box, and it has the best reputation with a 4.6-star rating from over 16,000 buyers. Don’t overthink it — the GB50 is the one I’d buy for my own SUV.
Frequently Asked Questions
Which is better for a compact SUV: the GB20 or the GB50?
The GB50 is better for a compact SUV, hands down. While the GB20’s 500A peak is enough for small 4.0L gas engines, the GB50 gives you 1500A — triple the power — for only an extra 0.3 lbs in weight. Most compact SUVs these days have V6 engines that draw more current, and the GB50’s 30 starts per charge versus the GB20’s 20 starts gives you way more peace of mind.
Is the GBX75 worth the extra money over the GB50 for a compact SUV?
In my opinion, no — the GBX75 is overkill for a compact SUV. You’re paying for 2500A of peak power that can start 8.5L gas engines, which is way more than you’ll ever need. The GBX75 also weighs 5 lbs compared to the GB50’s 2.7 lbs, and it’s much bulkier, so it won’t fit in a glove box. The only reason to get it is if you also own a large diesel truck or want the 60W USB-C fast charging in 1.8 hours.
Can the GB20 start a dead battery in a compact SUV in cold weather?
The GB20 can, but it’ll struggle more than the GB50 in freezing temperatures. Cold weather drains battery power, and with only 500A peak, the GB20 is right at the edge for a larger compact SUV’s V6. I’d recommend the GB50’s 1500A for cold climates because it gives you a much bigger margin of error when the battery is frozen or sluggish.
Which NOCO jump starter has the best recharge time?
The GBX75 wins this category easily with its 60W USB-C Power Delivery that recharges in just 1.8 hours. The GB20 takes 3 hours, and the GB50 takes 5 hours. The GBX75 can also give you enough power for a jump start in only 5 minutes from a completely dead battery, which is a killer feature if you’re in a hurry.
How many jump starts can I get per charge from each model?
The GB20 delivers up to 20 starts per charge, the GB50 gives you up to 30 starts, and the GBX75 provides up to 12 starts per charge. That might seem backwards — the most powerful one gives the fewest starts — but the GBX75’s 60-second timer conserves power by delivering extreme 2500A bursts rather than sustained energy. For a compact SUV, the GB50’s 30 starts is the most practical.
Which model has the brightest built-in flashlight?
The GBX75 has the brightest flashlight at 400 lumens, followed by the GB50 at 200 lumens, and the GB20 at 100 lumens. All three have 7 light modes including SOS and strobe. If you do a lot of night driving or roadside repairs, the GBX75’s 400-lumen light is genuinely useful, but the GB50’s 200-lumen is plenty bright for changing a tire or checking under the hood.
My Final Verdict
The NOCO Boost GB50 is my clear winner for compact SUV owners. Its 1500A peak power handles any compact SUV engine with room to spare for diesel models, yet it weighs just 2.7 lbs and fits in a glove box. The GB20 is a solid budget pick for smaller 4.0L gas engines, while the GBX75 is overkill at 5 lbs and better suited for full-size trucks.
If you’re still on the fence, ask yourself this: do you want a jump starter that works for every compact SUV you’ll ever own, or just the bare minimum? The GB50’s 4.6-star rating from over 16,000 buyers tells me most people make the same call I did.
Winner: NOCO Boost GB50
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
This is for any compact SUV owner who wants reliable 1500A power that fits in a glove box at 2.7 lbs. It starts up to 7.0L gas and 4.5L diesel engines, and it’s the best value for the money.
Runner-Up: 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...
Choose this if you drive a large SUV or truck with an 8.5L gas or 6.5L diesel engine and want 2500A of power plus 60W USB-C fast charging in 1.8 hours. It’s bulky at 5 lbs, so it won’t fit in a glove box.
Budget Pick: NOCO Boost GB20
- START DEAD BATTERIES — Instantly start dead batteries with 500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
Pick this if you have a small compact SUV with a 4.0L gas engine and want the lightest option at 2.4 lbs that fits in your glove box. It’s the most affordable way to get started with a reliable NOCO jump starter.
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