How Does the GB40 Compare to the GB70?

The NOCO GB70 is the more powerful big brother to the GB40, offering a higher jump-start amperage for larger engines. Both are excellent portable lithium jump starters, but they are designed for different vehicle types and user needs.

Choosing the right one prevents being stranded with an underpowered unit. This decision hinges on understanding your vehicle’s engine size and your desired features.

Best Jump Starters for Your Vehicle – Detailed Comparison

NOCO GB40 – Best for Standard Cars & Daily Drivers

The NOCO GB40 is ideal for gasoline engines up to 6.0 liters. It’s a compact and lightweight powerhouse perfect for commuter cars and sedans.

• 1000-amp peak current
• Ultra-portable at just 2.4 pounds
• Includes built-in LED flashlight

Best Use Case: Everyday cars, SUVs, and vans with smaller engines.

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NOCO GB70 – Best for Large Trucks & SUVs

The NOCO GB70 delivers serious power for larger vehicles. It can jump-start gasoline engines up to a massive 8.0 liters.

• 2000-amp peak current
• Robust design with enhanced clamps
• Same safety features as GB40

Best Use Case: Trucks, large SUVs, and vehicles with bigger, more demanding engines.

NOCO GB150 – Best for Commercial & Heavy-Duty Use

For ultimate power, the GB150 is the top-tier option. It can tackle diesel engines and is built for professional or extreme scenarios.

• 3000-amp peak current
• Powers nearly any engine type
• Includes a digital display

Best Use Case: Commercial trucks, heavy-duty equipment, and diesel engines.

Power and Performance: GB40 vs GB70 Core Specifications

Understanding the core power specifications is crucial for choosing between these jump starters. The key difference lies in their peak amperage and the engine sizes they can reliably start.

This directly impacts which vehicles each model is suited for. Let’s break down the critical performance metrics.

Peak Amperage and Engine Capacity

The most significant difference is the peak amperage output. This determines the raw starting power available for your vehicle’s engine.

• GB40 Peak Amperage: 1000 amps. This is designed for gasoline engines up to 6.0 liters.
• GB70 Peak Amperage: 2000 amps. This doubles the power, handling gasoline engines up to 8.0 liters.

If you drive a standard sedan or small SUV, the GB40 is sufficient. For larger trucks and SUVs, the GB70 is the necessary choice.

Battery Capacity and Charge Cycles

Both models use advanced lithium-ion technology. However, the physical size difference leads to a variation in overall capacity and longevity.

The GB70 houses a larger battery to support its higher power output. This also translates into more potential jump-starts per charge.

• GB40: Offers approximately 20 jump-starts on a single full charge.
• GB70: Provides roughly 40 jump-starts due to its larger battery capacity.

Key Takeaway: Choose based on your engine size. The GB40 is for engines under 6.0L, while the GB70 is essential for engines between 6.0L and 8.0L. The GB70 also offers more total jumps per charge.

Real-World Application Scenarios

How does this power translate to your garage? Your daily driver and any other vehicles you own will determine the best fit.

The GB40 is perfect for most common vehicles on the road. The GB70 provides a crucial power buffer for demanding situations.

• GB40 Ideal For: Sedans, compact SUVs, mid-size cars, motorcycles, and lawn equipment.
• GB70 Ideal For: Full-size trucks (Ford F-150, RAM 1500), large SUVs (Chevy Tahoe, Ford Expedition), and work vans.

Design, Portability, and Physical Comparison

The physical design differences between the GB40 and GB70 significantly impact portability and ease of use. While they share the same rugged, high-quality build, their size and weight are tailored to their power output.

This section examines their form factor, weight, and included accessories. Understanding these elements helps you choose the most convenient option for your needs.

Size, Weight, and Everyday Carry

Portability is a major selling point for NOCO jump starters. The GB40 is notably more compact and lightweight, making it ideal for storing in a glove box.

• GB40 Dimensions: 7.3 x 3.5 x 1.6 inches. It weighs a mere 2.4 pounds.
• GB70 Dimensions: 9.6 x 4.2 x 2.1 inches. It is heavier at 4.4 pounds.

The GB40 is easier to carry in a small bag or tight space. The GB70’s larger size is a direct trade-off for its increased power capacity.

Clamp Design and Safety Features

Both models feature NOCO’s proprietary safety technology. This includes spark-proof protection and reverse polarity detection to prevent damage.

The main difference lies in the clamp size and construction. The GB70’s clamps are built to handle its higher amperage flow.

• GB40 Clamps: Standard-sized, insulated jaws with a low-profile design.
• GB70 Clamps: Heavy-duty, larger jaws with enhanced thermal and electrical insulation.

Key Takeaway: The GB40 wins on pure portability for daily drivers. The GB70, while larger, offers more robust clamps suitable for frequent use on larger battery terminals.

Additional Features and Functionality

Beyond jumping, both units serve as versatile emergency power banks. They include multiple ports and an LED flashlight for roadside emergencies.

The core feature set is identical, ensuring you don’t lose functionality by choosing one model over the other.

• Shared Features: USB-A power bank, LED flashlight with SOS mode, and a 12V USB charger port.
• Battery Indicator: Both have a clear, multi-stage LED fuel gauge to show remaining charge.

Price, Value, and Making the Right Choice

Ultimately, your decision between the GB40 and GB70 comes down to value for your specific situation. The price difference reflects the significant gap in power and capacity.

Cost Analysis and Investment Value

The GB40 is the more budget-friendly option, typically costing significantly less than the GB70. This makes it an excellent value for owners of standard vehicles.

The GB70 commands a higher price point due to its superior components and raw power. This investment is justified if you require its enhanced capabilities.

• GB40 Price Range: Generally sits in the lower to mid-price tier for jump starters.
• GB70 Price Range: Positioned in the mid to high-end price range.
• Value Proposition: You pay for power and peace of mind for larger engines.

Who Should Buy the GB40?

The GB40 is the definitive choice for a majority of drivers. Its combination of adequate power and superior portability is unmatched for its target market.

This model is designed for urban and suburban commuters. It handles the most common dead battery scenarios with ease.

• Ideal User: Owners of cars, small SUVs, and motorcycles.
• Best For: Glove box storage and occasional emergency use.
• Key Benefit: Maximum portability at an accessible price point.

Key Takeaway: If your vehicle’s engine is under 6.0L, the GB40 provides all the power you need. It is the most cost-effective and portable solution for the average driver.

Who Should Upgrade to the GB70?

Choosing the GB70 is a decision based on necessity rather than mere preference. It is essential for those who operate vehicles with higher power demands.

This model is for users who cannot afford to be underpowered in an emergency. The extra cost is a premium for guaranteed performance.

• Ideal User: Owners of trucks, large SUVs, and commercial vans.
• Best For: Frequent use, harsh climates, and demanding engine types.
• Key Benefit: The confidence of having ample power for any gasoline engine up to 8.0L.

Final Verdict: GB40 vs GB70 Side-by-Side Comparison

This direct comparison table provides a clear, at-a-glance overview of all critical specifications. Use this data to quickly identify which model aligns with your vehicle and usage requirements.

The table highlights the trade-offs between power, size, and cost. This is your ultimate guide for making an informed purchase decision.

Specification	NOCO GB40	NOCO GB70
Peak Amps	1000 Amps	2000 Amps
Engine Size	Up to 6.0L Gas	Up to 8.0L Gas
Weight	2.4 lbs	4.4 lbs
Jumps Per Charge	~20	~40
Ideal For	Cars, Small SUVs	Trucks, Large SUVs

Pro Tips for Maximizing Your Jump Starter

Owning a NOCO jump starter is only half the battle. Proper maintenance and usage ensure it works when you need it most.

Follow these simple steps to keep your unit in peak condition. This extends its lifespan and guarantees reliability.

• Regular Charging: Recharge the unit every 3-6 months, even if unused.
• Storage: Keep it in a temperate, dry place, away from direct sunlight.
• Connection Order: Always connect positive (red) first, then negative (black) to a grounded metal point.

Final Recommendation: For most drivers, the GB40 offers the best balance of power, portability, and price. Upgrade to the GB70 only if you regularly drive a vehicle with an engine larger than 6.0 liters.

Common Questions Answered

Many users have similar questions when comparing these two popular models. Here are direct answers to the most frequent queries.

This information can help clarify any final doubts before you make your purchase.

• Can the GB40 start a diesel engine? No, neither model is recommended for diesel engines. Consider the GB150 or similar for diesel applications.
• Is the GB70 overkill for a car? For a standard car, yes. The GB40 is perfectly adequate and more portable.
• Do they come with a warranty? Yes, both models are backed by NOCO’s limited lifetime warranty.

Maintenance, Safety, and Long-Term Care Guide

Proper maintenance ensures your NOCO jump starter remains reliable for years. Both the GB40 and GB70 require similar care routines despite their power differences.

This guide covers essential safety protocols and storage tips. Following these practices maximizes your investment and ensures peak performance.

Essential Safety Protocols for Jump Starting

Safety should always be your top priority when dealing with car batteries. NOCO’s spark-proof technology helps, but proper procedure is crucial.

Always inspect your equipment and vehicle before attempting a jump start. This prevents accidents and potential damage to your vehicle’s electrical system.

• Inspect Cables: Check for frayed wires or damaged insulation before connecting.
• Correct Polarity: Always connect red to positive (+) and black to negative (-) or a grounded metal surface.
• Clear Area: Ensure the engine bay is clear of flammable materials and fluids.

Optimal Storage and Charging Practices

Lithium-ion batteries perform best when stored with a partial charge. Avoid storing your jump starter fully depleted or at 100% charge for extended periods.

Temperature extremes are the enemy of battery longevity. Proper storage location significantly impacts your unit’s lifespan.

• Ideal Charge Level: Store with a 50-80% charge for long-term health.
• Temperature Range: Keep between 32°F and 80°F (0°C and 27°C).
• Recharge Schedule: Top up the charge every 3-6 months if not used.

Key Takeaway: Store your jump starter in a cool, dry place with a partial charge. Perform a visual inspection before each use and follow the connection order strictly for safety.

Troubleshooting Common Issues

Even the best equipment can sometimes present challenges. Understanding basic troubleshooting can save you time and frustration.

Most common issues have simple solutions. Always refer to the official NOCO manual for specific error codes.

• Unit Won’t Charge: Try a different USB-C cable and wall adapter. Ensure the power source is working.
• Engine Doesn’t Crank: Verify the jump starter has adequate charge. Ensure clamps have a solid, clean connection.
• LED Flashlight Not Working: Check if the unit is in a special mode (like SOS) and press the mode button to cycle back.

Warranty, Support, and Final Purchase Considerations

Understanding the warranty and support behind your purchase provides long-term peace of mind. NOCO stands behind both the GB40 and GB70 with strong customer support.

This section covers the protection plan and key factors to consider before clicking “buy.” Making an informed decision ensures you get the right tool for your needs.

NOCO’s Limited Lifetime Warranty Explained

Both jump starters are protected by NOCO’s limited lifetime warranty. This is a significant value-add that justifies the investment in a quality product.

The warranty covers defects in materials and workmanship for the life of the product. It is a testament to the company’s confidence in its build quality.

• Coverage: Protects against manufacturing defects for the product’s lifetime.
• Registration: It is recommended to register your product online after purchase.
• Exclusions: Does not cover damage from misuse, accidents, or normal wear and tear.

Where to Buy and Authenticity Checks

To ensure you receive a genuine product with valid warranty coverage, purchase from authorized retailers. Counterfeit jump starters can be dangerous and unreliable.

Stick to reputable sources both online and in physical stores. This guarantees you get the safety and performance you paid for.

• Authorized Retailers: NOCO’s website, Amazon (sold by NOCO or Amazon.com), and major auto parts stores.
• Red Flags: Prices significantly lower than average, sellers with poor reviews, and missing packaging security features.
• Verification: Genuine products include a security seal and a unique serial number for registration.

Final Decision Checklist: Before purchasing, confirm your vehicle’s engine size, assess your portability needs, verify the seller is authorized, and understand the warranty terms.

Accessories and Recommended Add-ons

Enhance your jump starter’s utility with a few key accessories. These items can improve organization, protection, and overall convenience.

While not mandatory, they are inexpensive upgrades that offer great value. They help keep your emergency kit complete and ready for action.

• Weatherproof Case: Protects your unit from dust, moisture, and impacts during storage.
• Adapter Plugs: Useful for powering other 12V devices like air compressors or coolers.
• Storage Bag: Keeps the jump starter and its cables neatly organized in your vehicle.

Conclusion: Which NOCO Jump Starter is Right for You?

After this detailed comparison, the choice between the GB40 and GB70 should be clear. Your decision ultimately hinges on your vehicle’s engine size and your specific power requirements.

Both models are exceptional tools that provide reliable emergency starting power. The right one for you is the one that matches your daily driving reality.

Quick Decision Guide for Different Drivers

If you’re still unsure, this simple guide will point you in the right direction. Match your primary vehicle type to the recommended model for a guaranteed fit.

This eliminates the guesswork and ensures you get a unit you can depend on.

• Choose the GB40 if you drive: A car, sedan, compact SUV, motorcycle, or have an engine under 6.0 liters.
• Choose the GB70 if you drive: A full-size truck, large SUV, or have a gasoline engine between 6.0L and 8.0L.
• Consider the GB150 if you need: Power for diesel engines or the absolute maximum starting amperage.

Final Summary of Key Differences

Let’s recap the most critical distinctions one final time. These are the non-negotiable factors that should guide your purchase.

Remember that both units share the same excellent safety features and core functionality.

• Power: GB70 (2000A) has double the peak amperage of the GB40 (1000A).
• Portability: GB40 (2.4 lbs) is significantly lighter and more compact than the GB70 (4.4 lbs).
• Price: The GB40 is the more budget-friendly option for standard vehicles.

The Bottom Line: For over 90% of passenger vehicles, the NOCO GB40 provides the perfect balance of power, size, and value. Upgrade to the GB70 only if your vehicle’s specifications demand it. You can’t go wrong with either choice.

Your Next Step

You are now equipped with all the information needed to make a confident decision. Assess your primary vehicle, check its engine size, and choose accordingly.

Investing in a NOCO jump starter is an investment in peace of mind. Whichever model you select, you’ll be prepared for the unexpected.

Choosing between the GB40 and GB70 is about matching power to your vehicle. Both offer reliable, portable jump-starting freedom and advanced safety features.

The key takeaway is simple. Select based on your engine size for guaranteed performance when you need it most.

Check your owner’s manual for your engine’s liter size today. Then confidently select the right NOCO model for your needs.

You are now equipped to make the perfect choice. Enjoy the peace of mind that comes with being prepared.

Frequently Asked Questions about GB40 vs GB70

What is the main difference between the GB40 and GB70?

The primary difference is peak amperage. The GB40 delivers 1000 amps for engines up to 6.0 liters, while the GB70 provides 2000 amps for engines up to 8.0 liters.

This power gap makes the GB70 essential for larger trucks and SUVs. The GB40 is perfectly suited for standard cars and smaller vehicles.

Can the GB40 jump-start a truck?

It depends on the truck’s engine size. The GB40 can start smaller trucks with gasoline engines under 6.0 liters, like a Ford Ranger.

For full-size trucks like a Ford F-150 with larger engines, the GB70 is the recommended and safer choice to ensure a successful start.

How long do these jump starters hold a charge?

Both models have excellent charge retention when stored properly. You can expect them to hold a usable charge for 6 to 12 months.

For optimal battery health, it is best practice to recharge them every 3-6 months, even if they haven’t been used.

What should I do if my NOCO unit won’t charge?

First, try a different USB-C cable and wall adapter. Faulty accessories are the most common cause of apparent charging issues.

If that fails, check for any visible damage and ensure the power source is functional. Contact NOCO support if the problem persists, as the unit may be defective.

Is the GB70 worth the extra money?

If you own a vehicle with a large engine, the GB70 is absolutely worth the investment. It provides the necessary power guarantee for trucks and large SUVs.

For most car owners, the GB40 offers the best value. Paying for the GB70’s extra power is unnecessary if your engine is under 6.0 liters.

Can I use these jump starters in the rain?

Yes, both models are designed with weather-resistant casings and spark-proof technology. This makes them safe to use in damp conditions, like light rain or snow.

However, you should avoid submerging them in water or using them during a heavy downpour. Always prioritize safety and try to create a dry connection point if possible.

What is the best way to store a jump starter?

The best practice is to store it in a cool, dry place inside your vehicle. The glove box or center console is ideal to protect it from temperature extremes.

Avoid leaving it in direct sunlight or a freezing trunk for prolonged periods. Maintaining a partial charge during storage also prolongs the battery’s lifespan.

Do these come with a warranty?

Yes, both the NOCO GB40 and GB70 are backed by a robust limited lifetime warranty. This warranty protects against defects in materials and workmanship.

Be sure to register your product online after purchase to activate the coverage. The warranty is a key part of NOCO’s commitment to quality.