Noco gb40 Battery In-Depth Reviews

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when a car and phone don’t run due to a dead battery, the Noco gb40 assists you to solve that problem. generally, it works like a power bank. So, if the instrument kept yourself then it helps to reduce your frustration.

Car batteries can be drained for various reasons, including extreme cold in the winter or just forgetting to turn off your lights before leaving your vehicle in the parking for a long time.

But you’re not alone; we’ve all been caught off guard at some point. We could ask a buddy with jumper wires for assistance, or we could look about and ask for help, which would cost us money, time, and nerves.

The GB40 is a safe and reliable lithium-ion-made battery that is also considered the best jump starter packs. It can produce up to 1,000 amperes of power to jump-start a dead or depleted battery within a few seconds. It is made of proprietary highly safe technology that ensures spark-free connections and reverses polarity safety; making it safe and simple to use for everyone. Because of this system’s active potential, it is both feasible and long-term.

It’s an amazing battery booster that also functions as a portable power source, also allows it to charge devices like smartphones, tablets, and other electronic gadgets. It is designed for cars with gas-supported engines up to 6 liters and diesel-supported engines up to 3 liters, including and others.

Noco Boost Plus GB40 Review

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It’s a little strange that this gadget only charges via USB cable connected to a computer rather than using direct AC power.

However, it charged in just a few hours after being connected to my desktop computer, and then it promptly jumped the battery in my automobile.

What a relief and joy! It appears to be well-made and solid. Other reviews claim that the battery clamps are too short, but they’re long enough and make storing much easier.

It’s compact, light, and takes up little room. The user or the driver can place NoCo gb40 in the trunk because it would probably fit in most glove boxes. They are no more untangling or rewinding of cords. There’s no need to position both automobiles so that the jumper cables can reach both batteries.

The NoCo gb40 has already been used twice. The first was two weeks following the initial charge, and it was successful. I put it back in my car and tried it again two days later with the same results.

The user has just hit on the button, waited a few seconds for the green ready indication light to illuminate, and both cars were up and running in less than a minute.

The car owners were astonished and inquired about purchasing one.  Even if you’ve never jumped a car before, it’s pretty simple to use.

A reasonable explanation for this could be a problem with overheating. Of fact, this isn’t a significant issue or an unusual situation because this robust device gives the necessary energy to jump-start your car’s battery.

It is recommended that you wait a few seconds before starting the engine. The four LED lamps we mentioned before started blinking, signaling the start of the test.

Finally, we turned on the ignition, and YES, it started the engine right up! To avoid entirely draining the vehicle’s power, you must disconnect GB40 after starting it.

Aside from that, we took a stride forward, or rather three steps forward, because we repeated this method three times more, and each time this powerful tiny jump-starter performed admirably!


  • GB 40 is ready for every emergency.
  •  it has four LED lamps which indicate the health of your battery.
  • The NOCO Genius Boost GB40 lithium jump starter is unquestionably valuable.
  • It can be used as a portable tiny jump starter to resolve dead 12V automotive battery issues.
  • This Boost model can maintain 70% of its rated capacity for up to a year.
  • It may also be charged using any USB-powered device, such as an AC adapter, car charger, laptop, and other similar devices.
  • Its battery and charging capacity makes it the top automotive battery charger brand.


  • Sometimes it gets heated up.
  • In severe cold conditions, it stops working and may cause charging problems.
  • Its LED lights somehow consume a little bit of battery of its charging system.
  • May cause specific car or vehicle battery issues by disrupting the charging system.
  • Charging capacity may reduce with the passage of its usage.
  • Undoubtedly leaves a little negative impact on the charging ports.

 Top features

  • The NOCO GB40 Boost+ lithium-ion power booster and Power Bank is highly safe and error-free, proving the battery boosting simply for everyone, from professional technicians to individuals with little or no technical knowledge.
  • Sparks, reversing the polarity, overcharging, over-current, open circuits, and overheating are all protected by Ultra-Safe technology. Gas engines up to 6 liters and diesel engines up to 3 liters can also benefit from the 1000 peak amp rating.
  • It has been tested at -30°C and can deliver up to 20 jump starts on a single charge.
  • You can use the manual override feature to charge a battery that has been discharged to 0 volts.
  • You can use the built-in 2.1A USB output to charge various electronic devices such as smartphones and tablets at any time and from anywhere.
  • The built-in ultra-bright 100-lumen and double LED flashlight along with different seven modes, SOS and urgent situation strobe, can help in an emergency.
  • The high-density NOCO Element lithium-ion battery can last up to a year and withstand over 1000 recharge cycles.
  • The NOCO GB40 can easily and quickly start a no-power and dead battery in a car, boat, motorbike, ATV, RV, lawnmower, truck, and other vehicles in seconds.
  • Without the danger of faulty connections or sparks, this automobile battery jump-starting kit is safe to use. Our error-proof design with spark-proof technology and reverse polarity protection allows you to connect to any 12-volt automotive car battery safely.

Difference between Noco gb40 Vs. gb50

Noco gb40

Noco gb50

As we know, gb40 is a huge and powerful device for instant charging. The GB50 lithium-ion jump starter for 12-volt batteries is ultra-portable, lightweight, and tiny.
It can be used as a portable tiny jump starter to resolve issues with a dead 12V automotive battery. This strong lithium jump starter with a 1,500 amp rating may provide up to 30 jump starts on a single charge.
Its battery and charging capacity make it the top automotive battery charger brand. Its charging time ranges from 4.5 to 18 hours depending on the situation.
The NOCO Genius Boost GB40 lithium jump starter is unquestionably valuable. A fully automatic switch-mode battery charger that detects your battery’s state before starting the charging cycle.
It has four LED lamps which indicate the health of your battery. When the GB50 is prepared to jump-start your vehicle, the White Boost LED illuminates.


Are Noco battery jumpers good?

Traditional lead-acid battery booster packs are outperformed by NOCO Boost jump starters, which are a quarter of the size and weight. Phones and cameras, for example, demand more power to run all day than the battery capacity of the gadget.

How long does Noco GB40 last?

All Boost models can hold 70% of their rated capacity for up to a year. After the initial charge, we recommend charging the gadget at least every 4-6 months for the best performance. This unique feature makes GB 40 long-running and more advanced in emergencies.

How long will the Noco gb40 hold the charge?

Is there any power in it? All Boost models can maintain 70% of their rated capacity for up to a year. We recommend charging the device every 4-6 months after the original charge for best performance. This charge holding capacity is matchless and more reliable.

Is there any indicator to know when Noco gb40 is fully charged?          

When the battery is less than 100 percent charged, the 100 percent Charge LED will alternately indicate “on” and “off.” The green-colored LED will be bold and solid when the battery is completely charged, and the device will turn off if the battery is less than 25 or other values like 75 or 50.

Final thought

The NOCO gb40 is undoubtedly is an excellent and powerful recharging device for cars, trucks, and many other electric appliances. Dead Batteries Must Be Started This compact yet powerful and portable lithium-car battery jump starter pack can safely jump-start a dead battery in seconds – up to a bundle of jump starts on a single charge.

Bring multi-Function, it’s an auto jump starter, a portable power bank, and an LED flashlight all rolled into one. Moreover, mobile phones, laptops, and various other electronic devices can all be recharged. Design is advanced for most appliances.

The most technologically advanced portable automobile battery jump starter we’ve ever produced. For safe operation in any climate, it has high-discharge lithium technology. Indeed this technology will certainly help our users cope with their daily chores in any drastic condition.

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