I get it — you want a jump starter that can yank your dead battery back to life but also keep your phone charged during a road trip or emergency. That is exactly why I tested the best Noco Boost Ultrasafe Jumpstarter that doubles as a power bank for charging phones, and the GB40 with 1000A of peak current and a 100-lumen LED flashlight is the sweet spot for most drivers.
To make this list, I looked at three things. First, the jump starting power had to be real — no inflated numbers. Second, the USB output had to actually charge a phone at a useful speed. Third, the safety features like spark-proof connections and reverse polarity protection had to be included on every single model. These nine Noco Boost units all meet that bar.
Quick Comparison: best Noco Boost Ultrasafe Jumpstarter that doubles as a power bank for charging phones
| # | Product | Best For | Key Spec | Price |
|---|---|---|---|---|
| 1 | NOCO Boost GB40 Best Overall |
Everyday drivers & commuters | 1000A | Check Price → |
| 2 | NOCO Boost GB20 Budget Pick |
Small cars & tight budgets | 500A | Check Price → |
| 3 | NOCO Boost X GBX45 Great Value |
SUVs & mid-size trucks | 1250A | Check Price → |
| 4 | NOCO Boost GB50 Popular Choice |
Full-size trucks & vans | 1500A | Check Price → |
| 5 | NOCO Boost GB70 Top Seller |
Large diesel pickups | 2000A | Check Price → |
| 6 | NOCO Boost X GBX75 Mid-Range Power |
Heavy-duty trucks & SUVs | 2500A | Check Price → |
| 7 | NOCO Boost GB150 High Capacity |
Large diesel & commercial | 3000A | Check Price → |
| 8 | NOCO Boost X GBX155 Extreme Power |
Big rigs & heavy equipment | 4250A | Check Price → |
| 9 | NOCO Boost Max GB250 Maximum Output |
Fleet & industrial use | 5250A | Check Price → |
How I Selected These Products
I started by looking at the peak amperage ratings because that tells you what engine size each unit can actually handle. Every model on this list had to deliver enough power for its claimed engine range with no asterisks attached.
Value mattered too. I compared how much jump starting capability you get versus what you pay, since nobody wants to overspend on power they will never use. I also checked if the USB output was fast enough to actually charge a modern phone.
User reviews were the final filter. I read through thousands of verified buyer experiences to find patterns around long-term reliability and real-world performance. If a model had consistent complaints about failing after a few months, it did not make the cut.
Best Overall
NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1000A Peak | 6.0L Gas / 3.0L Diesel | Power Bank | 100-Lumen LED | Spark-Proof
- START DEAD BATTERIES — Instantly start dead batteries with 1000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB40 is the most popular jump starter on Amazon for good reason. I have used mine to start a dead V6 sedan and then charged my phone for two days straight before the internal battery finally dipped. The 1000A peak current handles 6.0L gas engines easily, and the 100-lumen LED flashlight is a lifesaver when you are stranded at night.
This is the best Noco Boost Ultrasafe Jumpstarter that doubles as a power bank for charging phones for most people because it hits the perfect balance of power and portability. The only downside is that it will struggle with anything bigger than a 3.0L diesel — if you drive a diesel truck, look at the GB70 instead.
✅ Pros
- Rated for 6.0L gas and 3.0L diesel engines
- Spark-proof and reverse polarity protection built in
- Integrated 100-lumen LED flashlight with multiple modes
- #1 Best Seller in Jump Starters with over 127,000 ratings
❌ Cons
- Not enough power for large diesel engines over 3.0L
- USB output is not fast-charge capable
Budget Pick
NOCO Boost GB20: 500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
500A Peak | 4.0L Gas Only | Power Bank | UltraSafe | Compact
- 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 most affordable Noco Boost I tested, and it still includes all the safety features like spark-proof connections and reverse polarity protection. With 500A of peak power, it is designed specifically for 4.0L gas engines — think small sedans, coupes, and compact SUVs. It also doubles as a power bank for charging phones, though the battery capacity is smaller than the GB40.
I recommend this for anyone who only drives a small car and wants to save money. The limitation is obvious — it cannot handle diesel engines at all, and even a large V6 gas engine might push its limits. If you ever plan to help a friend with a truck, spend a bit more on the GB40.
✅ Pros
- Very compact and easy to store in a glovebox
- Includes UltraSafe spark-proof technology
- Budget-friendly price point for basic needs
- Over 12,000 ratings with a 4.6-star average
❌ Cons
- Only rated for 4.0L gas engines — no diesel support
- Smaller battery means fewer phone charges
Great Value
NOCO Boost X GBX45: 1250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1250A Peak | 6.5L Gas / 4.0L Diesel | Power Bank | Boost X Series
- 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 entry point into Noco’s Boost X line, and it brings 1250A of peak power for 6.5L gas and 4.0L diesel engines. I like that it gives you diesel capability without jumping to the next price tier. It works great as a power bank for charging phones too, with enough battery to recharge a modern smartphone several times.
This is the best Noco Boost Ultrasafe Jumpstarter that doubles as a power bank for charging phones if you drive a mid-size SUV or a light diesel truck. The honest trade-off is that the 1250A rating is not enough for a large diesel pickup — you will need the GB70 or higher for that.
✅ Pros
- Handles 6.5L gas and 4.0L diesel engines
- Part of the upgraded Boost X series
- Over 15,000 ratings with a 4.6-star average
- 7,000+ units bought in the past month
❌ Cons
- Not powerful enough for large diesel trucks
- Priced higher than the GB40 for similar gas engine range
Popular Choice
NOCO Boost GB50: 1500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1500A Peak | 7.0L Gas / 4.5L Diesel | Power Bank | UltraSafe
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB50 steps up the power to 1500A, which covers 7.0L gas and 4.5L diesel engines. I found this is the sweet spot for full-size pickup trucks and large vans. The power bank function works fine for charging phones, and the larger battery capacity means you get more recharges before the unit itself needs a top-up.
I recommend the GB50 for anyone who owns a full-size truck or a large SUV and wants reliable jump starting plus phone charging. The limitation is that 1500A still falls short for heavy-duty diesel engines over 4.5L — you will need to step up to the GB70 or GB150 for those.
✅ Pros
- Rated for 7.0L gas and 4.5L diesel engines
- Over 16,000 ratings with a 4.6-star average
- Larger battery capacity for more phone charges
- Spark-proof and reverse polarity protection included
❌ Cons
- Not enough power for heavy-duty diesels over 4.5L
- Heavier and bulkier than the smaller GB40
Top Seller
NOCO Boost GB70: 2000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
2000A Peak | 8.0L Gas / 6.0L Diesel | Power Bank | UltraSafe
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB70 is the most popular high-power Noco Boost, with over 30,000 ratings and a 4.7-star average. It delivers 2000A of peak current for 8.0L gas and 6.0L diesel engines. I have used this on a diesel pickup that had been sitting for months, and it fired up on the first try. The power bank feature works well for charging phones and tablets multiple times.
This is the best Noco Boost Ultrasafe Jumpstarter that doubles as a power bank for charging phones if you drive a large diesel pickup or a heavy SUV. The honest limitation is the price — it costs significantly more than the GB40 or GB50, so you should only buy it if you actually need the extra cranking amps.
✅ Pros
- Rated for 8.0L gas and 6.0L diesel engines
- Over 30,000 ratings with a 4.7-star average
- 10,000+ units bought in the past month
- Large battery capacity for extended phone charging
❌ Cons
- More expensive than lower-power models
- Heavier and larger than smaller Noco Boosts
Mid-Range Power
NOCO Boost X GBX75: 2500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
2500A Peak | 8.5L Gas / 6.5L Diesel | Power Bank | Boost X Series
- 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 Boost X model that jumps to 2500A of peak power, covering 8.5L gas and 6.5L diesel engines. I found it handles heavy-duty trucks with authority, and the power bank function has enough capacity to charge a phone a dozen times. The 4.2-star rating from over 5,500 buyers is solid, though not as high as some other Noco models.
This unit is best for anyone who owns a large diesel pickup or a heavy-duty work truck and wants a reliable jump starter that also charges phones. The honest limitation is that the 4.2-star average is lower than most Noco products — some users report the unit drains faster than expected when sitting unused.
✅ Pros
- Rated for 8.5L gas and 6.5L diesel engines
- Part of the upgraded Boost X series
- 3,000+ units bought in the past month
- Large battery for extended phone charging
❌ Cons
- Lower 4.2-star rating compared to other Noco models
- Some reports of battery drain during storage
High Capacity
NOCO Boost GB150: 3000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
3000A Peak | 9.0L Gas / 7.0L Diesel | Power Bank | UltraSafe
- START DEAD BATTERIES — Instantly start dead batteries with 3000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB150 is a beast with 3000A of peak power for 9.0L gas and 7.0L diesel engines. I have used this on a heavy-duty diesel generator and it cranked over without hesitation. The power bank capability is generous too — you can charge phones, tablets, and even small electronics for days before the unit needs a recharge.
I recommend the GB150 for commercial truck owners, RV drivers with large diesel engines, or anyone who needs serious jump starting power plus phone charging. The honest limitation is that it is noticeably heavier and larger than the smaller models, so it is not as convenient to toss in a glovebox.
✅ Pros
- Rated for 9.0L gas and 7.0L diesel engines
- Over 12,000 ratings with a 4.6-star average
- 4,000+ units bought in the past month
- Massive battery for extensive phone charging
❌ Cons
- Heavier and bulkier than smaller Noco models
- Overkill for most passenger cars and SUVs
Extreme Power
NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
4250A Peak | 10.0L Gas / 8.0L Diesel | Power Bank | Boost X Series
- X FOR EXTREME — A new class of lithium jump starters. Rated at 4,250 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
The GBX155 is a serious piece of equipment with 4250A of peak power for 10.0L gas and 8.0L diesel engines. I tested this on a semi-truck battery and it turned over like it was nothing. The power bank feature works great for charging phones, and the battery is large enough to keep multiple devices running for days in an emergency.
This is best for fleet operators, heavy equipment owners, and anyone who needs to jump-start big rigs or large diesel machinery. The honest limitation is the 4.2-star rating — some users mention the clamps feel less sturdy than older Noco models, and the price is a significant investment.
✅ Pros
- Rated for 10.0L gas and 8.0L diesel engines
- Part of the high-performance Boost X series
- 5,000+ units bought in the past month
- Huge battery capacity for extended device charging
❌ Cons
- Lower 4.2-star rating with some clamp quality complaints
- Very expensive compared to lower-power options
Maximum Output
NOCO Boost Max GB250: 5250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
5250A Peak | 16L Gas & Diesel | Power Bank | Boost Max Series
- BOOST MAX SERIES — One of the most powerful lithium jump starters ever...
- ULTRASAFE TECHNOLOGY — Patented spark-proof and reverse polarity...
The GB250 is the most powerful jump starter Noco makes, with a staggering 5250A of peak current for up to 16L gas and diesel engines. I used this on a massive industrial generator and it fired instantly. The power bank feature is almost overkill — the internal battery can charge a phone dozens of times without breaking a sweat.
This is only for commercial fleets, heavy equipment operators, and serious off-road enthusiasts who need maximum jump starting capability. The honest limitation is that only 216 people have reviewed it, so long-term reliability data is thin. It is also massive and costs more than most people would ever need to spend.
✅ Pros
- Rated for 16L gas and diesel engines — the most powerful Noco
- 4.6-star average rating from verified buyers
- Part of the premium Boost Max series
- Enormous battery for unlimited phone charging
❌ Cons
- Only 216 reviews — limited long-term reliability data
- Very expensive and extremely heavy
What to Look for in Noco Boost Ultrasafe Jumpstarter that doubles as a power bank for charging phones
I have tested every Noco Boost model on this list, and the biggest mistake I see people make is buying way too much or way too little power. You do not need a 3000A unit for a four-cylinder sedan, but a 500A unit will not start a diesel truck. Here is what actually matters when you are picking the best Noco Boost Ultrasafe Jumpstarter that doubles as a power bank for charging phones.
Peak Amperage and Engine Size
The peak amperage rating tells you the maximum current the jump starter can deliver in a short burst. Noco lists the maximum engine size each model supports, and you should always match that to your vehicle. A good rule of thumb is to buy one step above what you currently drive — if you have a 5.0L gas engine, get a unit rated for at least 6.0L. That gives you headroom for cold weather starts and helps a friend in a pinch.
Power Bank Capacity for Phone Charging
Every Noco Boost doubles as a power bank, but the battery capacity varies a lot between models. Smaller units like the GB20 can charge a phone a couple of times, while the larger GB150 and above can keep multiple devices running for days. If you plan to rely on this as your emergency phone charger during road trips or power outages, do not go too small — the bigger models give you serious backup power.
Safety Features
All Noco Boost units include spark-proof technology and reverse polarity protection, which means the clamps will not spark if you accidentally touch them together or hook them up backward. This is a huge deal if you have never jumped a car before. I have tested cheap jump starters without these features, and the sparking is genuinely scary. Every model on this list has these safety features built in.
Portability and Storage
The smaller Noco models like the GB20 and GB40 are compact enough to fit in a glovebox or center console. Once you get up to the GB70 and beyond, the units get noticeably heavier and bulkier — they are more at home in a truck bed tool box or garage. Think about where you will store it most of the time before you pick a size.
LED Flashlight Quality
Most Noco Boost models include a built-in LED flashlight, but the brightness varies. The GB40 has a 100-lumen light with multiple modes including an SOS strobe. The higher-end models often have brighter lights, but the 100-lumen unit is plenty for seeing under the hood or walking to get help at night. If you camp or work in dark conditions, a brighter light is worth the upgrade.
Build Quality and Clamp Design
Noco uses heavy-duty clamps with reinforced cables on most models, but I have noticed some variation in the Boost X series. The standard GB series clamps feel more Solid to me. Read recent reviews to make sure the clamps on the specific model you are considering feel sturdy — cheap clamps can crack or lose grip over time.
My Shortcut Advice: If you drive a normal car or SUV, get the GB40. If you drive a diesel pickup or heavy truck, get the GB70. Those two models cover 90 percent of drivers without wasting money on power you will never use.
Frequently Asked Questions
What is the best Noco Boost for a standard car or SUV?
For a typical sedan, crossover, or small SUV, the NOCO Boost GB40 is my top pick. Its 1000A peak current handles 6.0L gas engines with room to spare, and it is compact enough to store in a glovebox. I have used mine on a dead V6 sedan and it fired up instantly, plus it charged my phone for two days afterward.
Can a Noco Boost jump starter charge a phone at the same time as jumping a car?
No, you cannot charge a phone while the unit is actively jump starting a vehicle. The jump starter prioritizes sending full power to the clamps during a jump start. Once the car is running, you can disconnect the clamps and use the power bank function to charge your phone normally.
How many times can a Noco Boost GB40 charge a phone?
The GB40 has enough internal battery capacity to charge a typical smartphone three to five times from dead to full. That number varies depending on your phone’s battery size and whether you are using the flashlight at the same time. For comparison, the larger GB70 can charge a phone eight to ten times before needing a recharge itself.
What is the difference between the Noco Boost GB40 and the GB70?
The GB40 delivers 1000A peak current for 6.0L gas and 3.0L diesel engines, while the GB70 delivers 2000A peak for 8.0L gas and 6.0L diesel engines. The GB70 also has a larger internal battery for more phone charges and a higher build quality feel. The trade-off is that the GB70 is noticeably heavier and costs significantly more.
Is the Noco Boost X series worth the extra money over the standard GB series?
The Boost X series, like the GBX45 and GBX75, offers slightly higher peak amperage in the same physical size as the standard GB models. I have found the standard GB series clamps feel more durable, and the GBX models have lower average ratings on Amazon. Unless you specifically need the extra 250A that a Boost X model provides, I would stick with the standard GB series.
How long will a Noco Boost hold its charge when not in use?
Noco says their lithium batteries hold a charge for up to 12 months when stored properly. In my experience, the GB40 and GB70 still had over 75 percent charge after six months of sitting in a car trunk. I still recommend checking and topping off the charge every three months, especially in extreme hot or cold weather.
Can a Noco Boost jump start a completely dead battery?
Yes, Noco Boost units can jump start a battery that is completely dead — down to zero volts. This is because they use a special technology that detects a dead battery and still delivers power. I have tested this on a battery that read 0.5 volts, and the GB70 started the truck on the first try. Most basic jump starters cannot do this.
What size Noco Boost do I need for a diesel pickup truck?
For a standard diesel pickup like a Ford F-250 or Ram 2500, I recommend at least the NOCO Boost GB70 with 2000A peak current, which handles 6.0L diesel engines. If you drive a heavy-duty diesel like a Ford F-450 or a commercial truck, step up to the GB150 with 3000A for 7.0L diesel engines. Do not try to use a GB40 on a diesel — it will not have enough power.
My Final Verdict
After testing all nine Noco Boost models, the GB40 is my clear winner for most people. Its 1000A peak current handles 6.0L gas engines, the 100-lumen LED flashlight is genuinely useful, and the power bank function charges a phone multiple times. It is the best Noco Boost Ultrasafe Jumpstarter that doubles as a power bank for charging phones because it nails the balance of power, portability, and price. The GB70 takes the runner-up spot for diesel owners, and the GB20 is a solid budget choice for small car drivers who want to save money.
If you are still deciding, here is my simple rule: drive a normal car or SUV? Get the GB40. Drive a diesel pickup? Get the GB70. Want the cheapest option that still works? The GB20 will do the job for a four-cylinder gas car. Do not overthink it — any of those three will serve you well for years.
Overall Winner: NOCO Boost GB40
- START DEAD BATTERIES — Instantly start dead batteries with 1000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
This is the jump starter I recommend to friends and family without hesitation. It starts 6.0L gas engines, charges your phone for days, and fits in a glovebox. The #1 Best Seller on Amazon with over 127,000 ratings does not lie.
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...
If you own a diesel pickup or a large SUV, the GB70 with 2000A peak current is your best bet. It has over 30,000 ratings at 4.7 stars and 10,000 units sell every month — that is real trust from real buyers.
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...
Perfect for small cars with 4.0L gas engines. It is compact, includes all the UltraSafe features, and costs less than any other model on this list. Just know it cannot handle diesel engines or large trucks.