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NOCO Boost Plus GB40 1000 Amp 12-Volt Ultra Safe Portable Lithium Car Battery Jump Starter

NOCO Boost Plus GB40 is a lightweight and compact portable car battery jump starter. The energy is provided by the built-in lithium-ion battery, allowing the NOCO Boost Plus GB40 to start 6.0-liter gas and 3.0-liter diesel engines up to 20x per single battery charge.

Also, NOCO Boost Plus GB40 may be used as an emergency flashlight and for charging devices via USB port, like tablets, smartphones, and other similar devices.

Great safety features, simple to use design, and affordable price make NOCO Boost Plus GB40 one of the most popular models on the market.

Updated: April 9, 2022.

Features and Specifications

NOCO Boost Plus GB40 is a very lightweight battery starter. the unit alone weighs 1.65 pounds (~0.75 kg) and with clamps and all accessories, it weighs 2.4 pounds (~1.1 kg).

Internal battery features 24 Wh (watt-hour) capacity, allowing the NOCO Boost Plus GB40 to provide up to 1000 Amps (12V systems), making it suitable for starting up to 6-liter gas and 3-liter diesel internal engines. most cars, trucks, boats, tractors, RVs, etc.

Physical dimensions of the NOCO Boost Plus GB40 are (L x W x H) 7.7/6.6 x 3.2 x 1.7 inches (~196/167 x 80 x 44 mm). it can’t fit most s, but it can easily fit in the backpack, for example.

NOCO Boost Plus GB40 features a rugged and water-resistant enclosure rated at IP65. it can withstand rain and some water splashes, but it should not be submerged!

NOCO Boost Plus GB40 is intended for providing large currents for a very short period of time and thus, it comes with very important safety features, including spark-proof technology and reverse polarity protection.

The unit is able to detect deeply discharged lead-acid batteries, discharged even down to 2V(!), and successfully start the main engine.

However, if the battery is discharged even below 2V (cell reversal?!), NOCO Boost Plus GB40 will not start the engine UNLESS the user manually overrides the battery detection. this override also disables safety features and it is very important to emphasize that this should be done only in an absolute emergency and only by users that know what they are doing. If not, wait for the help.

Note: NOCO Boost Plus GB40 is a very user-friendly battery starter, but when it comes, be sure to thoroughly read the instructions. Also, it is good practice to keep the instructions in the transport bag.

When the unit arrives, the box contains a NOCO Boost Plus GB40 battery starter, battery clamps, 12-Volt car charger, micro USB charging cable, microfiber storage bag, and a very important User Guide.

Using any 2.1 Amps USB port, the unit can be fully recharged in ~3 hours.

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NOCO Boost Plus GB40 is a multi-function device. it is a battery starter, USB charger, and emergency flashlight.

Personally, the only thing worse than not having a car battery jump starter in an emergency is having discharged car battery jump starter in an emergency. NOCO Boost Plus GB40 should be used for charging smartphones only in emergencies (charge it to dial a 911 and not more!), while the integrated flashlight should be used only to be able to connect the battery clamps to the battery in pitch dark situations and to signal for help.

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After all, its integrated 100-lumen LED flashlight features seven light modes, including emergency strobe and SOS.

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NOCO Boost Plus GB40 comes with a 1-year warranty.

How to Use NOCO Boost Plus GB40

NOCO Boost Plus GB40 is a very user-friendly unit, especially if you go through its manual several times and use it or any similar device for few times 🙂

Seriously, NOCO Boost Plus GB40 should be used only for starting ONLY 12V lead-acid batteries, if supported by the car manufacturer. For systems with negative ground systems (most of the cars, boats, trucks. ), the procedure is as follows:

After starting the vehicle, disconnect the negative and then positive battery clamp and recharge the battery starter as soon as possible.

Note: this procedure is described in greater detail in the Owner’s Manual, so always keep it with the starter.

Why You Should Consider Purchasing A Portable Jump Starter?

When you travel frequently, having a portable car jump starter in your trunk is essential. Car trouble is inevitable and there’s nothing scarier than being stranded at night or during bad weather conditions. Since you can’t predict when your car battery will fail it’s good to always be prepared.

The great thing about portable jump start battery packs is that you give your car battery the boost it needs without having to enlist the help of a friend or another fellow motorist. All you have to do is attach the clamps to the positive and negative terminals on your battery. When you have a portable jump starter you will save money on a tow and you won’t have to worry about having to pay expensive roadside assistance programs

What Is The Noco Boost Plus GB40?

The Noco Boost Plus GB40 is a portable jump starter battery pack that runs on a lithium-ion battery. At 6.6 inches by 3.2 inches, this device is the size of a standard iPhone which means it can conveniently fit in your glove box, the trunk, or even in the center console.

Don’t let the size fool you. Weighing nearly three pounds. The Noco Boost Plus packs a powerful punch. This lithium-ion battery delivers up to 1,000 Amps which means when fully charged it can provide up to twenty jumpstarts.

This ultra-light and compact jump starter was designed to boost 12-volt batteries. It’s capable of jump starting gas engines up to six liters and diesel engines that are up to three liters.

Noco Boost Plus GB40 Review – Why Lithium-ion Batteries Are So Efficient

Traditional lead acid battery boosters are no match for the Lithium-ion powered Noco Boost. The first portable battery packs to hit the market were manufactured with lead acid batteries. Nowadays, mostly large heavy-duty packs use lead acid batteries. While both are capable of boosting a car battery, lithium-ion powered battery packs are the future because they are able to deliver more power in a much smaller and lighter design.

Lithium-ion is taking over the technology world. Just think, our cellphones and laptops have become a lot smaller, lighter, and are able to last for several hours on a single charge thanks to lithium batteries. It was only a matter of time before this revolutionary technology usher out lead acid boosters which are considered the “grandfather” of portable battery packs.

When it comes to the energy density in volume, most standard lithium battery packs are able to deliver four times more power than a lead acid battery pack in just a fraction of the space. The self-discharge rate of lithium-powered packs is also noteworthy.

All batteries leak during their shelf life, but the rated discharge matters when you are searching for a reliable battery pack. Lithium-ion booster packs have a discharge rate of 3%-5% of it’s charge each month while a lead acid battery pack can discharge up to 15% each month.

Lead acid batteries are high-maintenance which isn’t ideal for the driver that’s always on the go. Battery packs that use this type of battery lose charge rather quickly and have to be regularly charged if they are going to be useful. The Noco Boost Plus can hold a charge for over 12 months with minimal power loss.

You can expect to pay a bit more money for a portable battery pack that uses a lithium-ion battery. Most automotive experts will agree that it’s definitely worth the cost.


At first blush, the Noco Genius Boost doesn’t seem powerful enough to start up a big car, but just like the BEATIT G18 Jumpstarter, it is capable of waking up a 6.0-liter gas powered vehicle as well as a 3-liter diesel engine without much strain. It’s jumper cables are not quite as long, but then again, when you’re under your car’s hood you won’t need them to be. Inside the Boost plus GB40 is an ultrasafe lithium battery that is powerful enough for up to 20 jumpstarts with one charge. To keep it that powerful all through, you want to make sure that you get it well charged (for 3 hours) after each use.

The Noco Genius Boost jump starter can best be described as lightweight and compact. It weighs about 2.7 pounds, and compared to other jump starters like the Clore Automotive Jump-n-Carry JNC660, it is pretty small. The battery booster comes with a 4-level LED battery charge indicator, 2 USB ports and an LED flashlight. In terms of build quality, the GB40 portable lamp comes with a rubberized casing to keep it’s surfaces scratch free, and a 4 LED indicators that let you know how much energy its battery has in store.


For added convenience, the Noco GeniusBoost jump starter also comes with a bright 100 Lumen LED flashlight that you can use in case you’re trying to revive a dead battery in the middle of the night. Plus, when you have great lights for your garage so you can find it easier. Car users will also benefit from its reverse polarity protection feature in case you get the terminals mixed up, and once done jumpstarting, it’ll need to be left charging for up to 3 hours until it is back up to full capacity. It’s not as light as the TACKLIFE T8 800A, but the ultrasafe lithium jump starter is still very easy to handle or carry around.

Having this Genius Boost jump starter at hand will always ensure that you’re able to kickstart your car back to life whenever your battery stalls. Get your jump starter now from and you’ll never have to worry about your battery dying again.

Kenn is a writer that’s fascinated by all things tech. Having been born curious about how everything works, he spends his time taking things apart to put them back together, and shares what he finds out through writing.

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Business Insider reminds everyone that you can still carry jumper cables with you. However, you’re still relying on a good Samaritan in this case.

For the ultimate power to jump start a dead battery, turn to the GB150. It powers up even the largest gas or diesel engines up to 10 liters in size. A host of helpful features also dots the robust housing, including:

As with the other jump starters, the GB150 comes with USB ports and 12-volt supply. Charge up nearly any electronic device today along with powering those handy, 12-volt products. Those coffeemakers and fans are instantly powered with the GB150.

If you aren’t sure about the right jump starter for your needs, Northeast Battery can break down the features. It’s always good to have a little more power than you think is necessary. The jump-starter family is a Smart place to start when you want to take control of power on the road.

Stick with Northeast Battery for all of your power needs. From batteries to chargers, our stock keeps you moving and connected. Be part of the solution when batteries seem to drop dead in seconds. Handheld power will keep you on schedule.

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