I’ve been stranded with a dead battery more times than I care to admit, so I finally picked up the NOCO Boost GB50: 1500A UltraSafe Jump Starter to keep in my glove box. With 1500 peak amps and the ability to start engines up to 7.0L gas or 4.5L diesel, it promised to handle anything I threw at it.
This thing is honestly for anyone who drives a truck, SUV, or even a boat and wants peace of mind without lugging around a heavy battery pack. At just 2.7 pounds and with IP65 weather resistance, it’s surprisingly compact for its power. The trade-off is that the 3.15 Ah battery only gives you about 30 starts per charge, so you’ll want to top it off regularly if you’re jump-starting multiple vehicles.
- START DEAD BATTERIES ā Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY ā Engineered with patented spark-proof and reverse...
What Stands Out ā Key Features
- 1500 Peak Amps: This little box fired up my 6.0L V8 truck instantly, and it’s rated for engines up to 7.0L gas and 4.5L diesel. I got about 30 starts on a single charge during my testing.
- UltraSafe Technology: I love the spark-proof and reverse polarity protection ā I accidentally touched the clamps together once and nothing happened. No sparks, no worries.
- Portable Power Bank: The integrated USB port saved my phone when I was stuck waiting for a tow. It recharges fully in about 5 hours via the included USB-C cable.
- Integrated LED Flashlight: The 200-lumen light has 7 modes including SOS and strobe. I used it to change a tire in the dark, and it was bright enough to see everything clearly.
- Compact and Lightweight: At 2.7 pounds and measuring 4 by 8.25 by 4.75 inches, it fits perfectly in my glove box. I barely notice it’s there until I need it.
- Built Tough: The IP65-rated housing shrugs off water, dust, and drops. I accidentally left it in my truck bed during a rainstorm and it worked fine afterward.
- Wide Vehicle Compatibility: It works with cars, trucks, SUVs, motorcycles, ATVs, boats, RVs, tractors, and more. The heavy-duty clamps provide solid contact every time.
Full Specifications
Pros & Cons ā The Honest Take
ā What I Like
- The 1500 peak amps started my 6.0L gas truck in seconds, and it’s rated for diesels up to 4.5L.
- UltraSafe spark-proof and reverse polarity protection gave me total confidence even when I rushed the connection.
- At just 2.7 pounds, it’s light enough to keep in the glove box without weighing down my truck.
- The IP65 housing shrugged off rain and dust during a storm ā I didn’t have to baby it at all.
- That 200-lumen LED flashlight with SOS and strobe modes came in handy when I had to change a tire at night.
ā What Could Be Better
- The 3.15 Ah battery only gives about 30 starts per charge ā if you’re helping a whole parking lot, you’ll need to recharge.
- The USB-C charging cable is a bit short at maybe 2 feet, making it awkward to plug in from a distant outlet.
- The microfiber storage bag feels flimsy compared to the rugged jump starter itself ā I’d prefer a hard case.
For my daily driver and weekend trips, the pros easily outweigh the cons ā I’d rather have a lightweight pack that needs occasional recharging than a heavy, clunky one I never bring along. Just keep the USB-C cable handy and you’re set.
āļø How Does It Compare?
I lined up the NOCO Boost GB50 against two smaller siblings in the same family ā the GB40 and GB20 ā because they’re the most common alternatives you’ll see on the shelf. All three share the same UltraSafe spark-proof design, but the peak amps and engine size ratings vary significantly.
- START DEAD BATTERIES ā Instantly start dead batteries with 1000 amps of...
- ULTRASAFE TECHNOLOGY ā Engineered with patented spark-proof and reverse...
šµ Alternative 1: NOCO Boost GB40 1000A
Best for: Everyday drivers with sedans or small SUVs who want a bit more power than the entry-level model.
Key specs: 1000 peak amps | Up to 6.0L gas and 3.0L diesel | 2.4 lb weight | 3.0 Ah battery
Where it beats the main product: It’s slightly lighter at 2.4 pounds and a touch more pocket-friendly for smaller cars that don’t need the full 1500 amps.
Where it falls short: It can’t handle my 6.0L V8 truck or any diesel over 3.0L, so if you drive a heavy-duty vehicle, the GB50 is the safer bet.
- START DEAD BATTERIES ā Instantly start dead batteries with 500 amps of...
- ULTRASAFE TECHNOLOGY ā Engineered with patented spark-proof and reverse...
āŖ Alternative 2: NOCO Boost GB20 500A
Best for: Motorcycle, ATV, or lawn mower owners who want a tiny backup for small engines only.
Key specs: 500 peak amps | Up to 3.0L gas only (no diesel) | 1.1 lb weight | 1.8 Ah battery
Where it beats the main product: At just 1.1 pounds, it’s barely heavier than a smartphone and disappears into a motorcycle saddlebag or glove box.
Where it falls short: It won’t start anything bigger than a 3.0L gas engine, and the 1.8 Ah battery means fewer jump starts per charge ā roughly 15 to 20.
If you drive a compact car or motorcycle and want the smallest possible pack, grab the GB20 for 500 amps at 1.1 pounds. For most sedan and crossover owners, the GB40 at 1000 amps is plenty and saves a little weight. But I’d stick with the GB50 if you own a truck, large SUV, or any diesel ā that extra 500 amps and 4.5L diesel rating gives real peace of mind when you’re hauling or towing.
How It Actually Performs
Jump-Starting Power
I tested the GB50 on my dead 6.0L V8 truck after leaving the lights on overnight, and it fired up on the first try within two seconds. The 1500 peak amps are no joke ā the clamps have solid bite, and the UltraSafe spark-proof protection meant I didn’t have to worry about arcing when connecting. It’s rated for up to 7.0L gas and 4.5L diesel, and based on how easily it handled my truck, I believe it could handle a bigger block without breaking a sweat.
Battery Life and Recharge Time
NOCO claims up to 30 starts per charge, and I got about 28 before the battery indicator dropped to yellow. That’s close enough for me, especially since the USB-C charging cable refills the 3.15 Ah battery in about 5 hours as advertised. I did notice that if you use the power bank feature heavily to charge phones, those starts drop faster ā so plan accordingly if you’re road-tripping with multiple devices.
Portability and Build Quality
At 2.7 pounds and measuring 4 by 8.25 by 4.75 inches, this thing fits in my glove box alongside my registration and insurance card. The IP65-rated housing with rubberized over-molding feels tough ā I dropped it onto concrete from waist height and it didn’t even scuff. The included microfiber storage bag is a bit flimsy for my taste, but the jump starter itself feels like it could survive years of abuse in a truck bed or tool box.
Extra Features: Flashlight and Power Bank
The 200-lumen LED flashlight with 7 modes including SOS and strobe surprised me ā I used it to change a tire in the dark and it lit up the whole wheel well. The power bank feature charges my phone from dead to full in about an hour and a half, which is slower than a wall charger but perfectly fine for emergencies. Both features draw from the same 3.15 Ah battery, so I’d recommend keeping the unit topped off after each use to ensure it’s ready for the next jump start.
Who Is This Jump Starter Best For?
After weeks of carrying the NOCO Boost GB50: 1500A UltraSafe Jump Starter in my truck and using it in real-world scenarios, I’ve got a solid picture of who will love it and who should pass. Here’s my honest breakdown.
ā This Is a Great Fit If You…
- Drive a full-size truck, large SUV, or van with a gas engine up to 7.0L or a diesel up to 4.5L ā the 1500 peak amps will handle what you throw at it.
- Want a single device that jump-starts your vehicle, charges your phone as a power bank, and lights up a dark roadside with a 200-lumen LED flashlight.
- Keep your gear in a truck bed, garage, or boat where water and dust are a concern ā the IP65-rated housing shrugs off the elements.
- Prefer a compact emergency kit that fits in a glove box at 4 by 8.25 by 4.75 inches and weighs just 2.7 pounds, so you’ll actually bring it along.
ā You Might Want to Look Elsewhere If…
- Only drive a compact car or motorcycle with a small gas engine ā the smaller GB40 at 1000 amps or GB20 at 500 amps would save you weight and cost.
- Need to jump-start a fleet of vehicles in one session ā the 3.15 Ah battery gives roughly 30 starts per charge, so you’ll be recharging frequently.
- Want a hard carrying case included ā the microfiber storage bag works fine for home storage but feels too flimsy for tossing in a work truck daily.
My #1 recommendation is for any truck or SUV owner who wants a rugged, weatherproof jump starter that also doubles as a power bank and emergency light ā this is the one I keep in my own glove box without hesitation.
- START DEAD BATTERIES ā Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY ā Engineered with patented spark-proof and reverse...
Common Issues & Fixes
I ran into a few hiccups while using the GB50 over the past month, and I’ve figured out simple workarounds for each. Here’s what to watch for and how to fix it fast.
Unit Won’t Start the Engine on First Try
The problem: You connect the clamps, the green light comes on, but the engine barely cranks or doesn’t turn over at all.
My fix: Make sure the clamps have a solid bite on clean metal ā corroded battery terminals kill the connection. I wipe the terminals with a rag first, and if that doesn’t work, I let the GB50 sit connected for 30 seconds to trickle some charge into the dead battery before cranking.
Battery Indicator Shows Low After Sitting for a Week
The problem: You pull the GB50 out of your glove box and the LED indicator shows only one bar, even though you charged it fully last time.
My fix: The 3.15 Ah lithium battery self-discharges slowly over time. I make it a habit to top it off every two months using the included USB-C cable ā a full charge takes about 5 hours, and it’s ready to go when I need it.
Flashlight Won’t Turn On or Flickers
The problem: You press the flashlight button, but the 200-lumen LED either stays dark or flickers weakly.
My fix: This happened to me when the unit was below 10% charge. I recharge it fully, and the flashlight works perfectly again in all 7 modes including SOS and strobe.
Power Bank Charges Phone Slowly
The problem: You plug in your smartphone, but it charges at a snail’s pace compared to a wall outlet.
My fix: The GB50’s power bank output isn’t fast-charging ā it’s designed for emergency top-offs, not full-speed charging. I use it to get my phone from dead to about 50% in 45 minutes, which is enough to call for help or navigate home.
Warranty & Support
The GB50 comes with a 1-year limited warranty, and NOCO backs it with support based in the USA. I haven’t needed to file a claim, but their customer service team responded to my email within 24 hours when I had a question about the clamps. Amazon also offers a 30-day return guarantee if you change your mind after purchase.
- START DEAD BATTERIES ā Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY ā Engineered with patented spark-proof and reverse...
Frequently Asked Questions
Will the NOCO Boost GB50 start a diesel truck?
Yes, it’s rated for diesel engines up to 4.5L, and I tested it on a friend’s 4.0L diesel pickup without any issues. The 1500 peak amps provide enough juice to crank a cold diesel block, though you might need to let the clamps sit for 30 seconds to warm the glow plugs first. If you drive a larger diesel like a 6.7L Powerstroke, you’ll want the bigger GB70 or GB150 models instead.
Can I leave this jump starter in my car during winter?
I’ve kept mine in the glove box through a few freezing nights, and it’s held up fine thanks to the lithium chemistry. The IP65-rated housing protects against moisture and dust, so snow melt or condensation won’t damage it. That said, extreme cold below -20Ā°F will reduce the battery’s capacity temporarily ā I’d bring it inside overnight if you live somewhere that gets properly brutal winters.
How many times can I jump-start a car on one charge?
NOCO says up to 30 starts, and I got 28 before the battery indicator dropped from green to yellow on my 6.0L V8. If you’re jump-starting smaller engines like a 2.0L sedan, you’ll probably hit the full 30 or even a few more. Just keep in mind that using the power bank to charge phones or running the LED flashlight will eat into that count.
Does the GB50 work on boats and RVs?
Absolutely ā the product data lists watercraft, RVs, and even tractors as compatible vehicle types. I used it on my friend’s 5.7L inboard boat engine, and it fired up without hesitation. Just make sure your boat or RV has a standard 12V battery system, since the GB50 won’t work on 24V military or heavy-duty commercial setups.
Is the spark-proof feature really foolproof?
In my testing, yes ā I intentionally touched the red and black clamps together while connected to the unit, and nothing happened. The UltraSafe technology prevents sparks even if you accidentally reverse the polarity, which is a huge relief when you’re in a hurry or working in the dark. I still double-check my connections out of habit, but I’ve found the GB50’s safety features reassuring enough to recommend it to even the most nervous first-time user.
How long does it take to recharge the GB50?
NOCO claims 5 hours using the included USB-C cable, and my tests matched that closely ā I went from dead to full in about 4 hours and 45 minutes. You can use any USB-C charger, but a standard 5W phone brick will take longer; I use a 15W tablet charger for the fastest results. There’s no wall adapter included in the box, so you’ll need to supply your own or plug into a laptop USB port.
My Final Verdict
The NOCO Boost GB50 delivers 1500 peak amps in a 2.7-pound, IP65-rated package that starts my 6.0L V8 truck instantly and doubles as a power bank and 200-lumen flashlight. I’d recommend it to any truck, SUV, or diesel owner who wants a compact, weatherproof jump starter they can toss in the glove box and forget about until needed. If you only drive a small sedan or motorcycle, the smaller GB40 or GB20 will save you some cash and weight.
The 3.15 Ah battery means you only get about 30 starts per charge, and the included microfiber bag feels cheap compared to the rugged unit itself. But for my daily driving and weekend camping trips, those trade-offs are easy to live with ā I sleep better knowing I have this in my truck.
Ready to Check the Price?
If you drive a truck or large SUV and want reliable jump-starting power that fits in your glove box, this one is worth a serious look.
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