Features:

  • Start dead batteries with a compact, yet powerful lithium jump starter rated at 4, 000 Amps - up to 80 jump starts on a single charge
  • Connect to any lead-acid battery safely with our ultra-safe, mistake-proof design featuring spark-proof technology and reverse polarity protection.
  • An integrated LED flashlight with seven light modes, including low, medium, high, flashing, strobe and emergency SOS; plus 6-hours of continuous run time.
  • Recharge smartphones, tablets, and other USB devices when you need them most; plus, recharge from any powered USB port. Also power 12-volt devices like tire pumps, inverters and more.
  • Safely jump start a dead battery in Jump starts both gas and diesel engines up to 10 liters and more.
It works and it made me a hero to a distressed motorist this week!

This thing has saved my bacon (and some other people) several times! I must have a battery going bad in my full sized Chevy van with big V8 engine. Several times I have turned the key and the engine will not crank. I hooked up this wonderful gadget and the van starts right up. I can have it started in about 2 minutes time from when I find out the battery is dead. Just this week a motorcyclists battery was dead at the gas station I was filling up at. I said no worries friend. I got out the NOCO and we jumped his motorcycle in a jiffy. He was very appreciative and I was happy to help a stranger in distress out. This thing just plain works and it holds its charge for a long time. I could not be happier with it.

Got a stranger out of a bind.

Bought this in preparation for a rainy day. Heading back from Columbus to Cincinnati I pull off the highway to get a drink from a gas station and someone has their hood up and I hear the guy helping them say, "Man, I just lent my cables out to a friend." I come over with the NOBO in hand and say, "I can help." The guy that's already trying to help jumps in his car to offer the jump and I just smile and say, "No bud, this won't need that." The people were so impressed that the first this they said was I need to buy one of those and I said, "Maybe, but you def need a new battery or alternator." Update: 12/10/2016* Used it a couple more times and I haven't even recharged it yet from the original charge. Update: 03/23/2017 I bought a Land Cruiser for winter time driving and maybe some off-road adventure so I bought a second one of these bad boys for that vehicle. It isn't a problem at all, however I would like them to start offering a hard case for this for future customers. I am probably going to buy one for this. Still works great. *Edit to fix date of updated review.

I absolutely love this

I've been a pro auto tech for long enough now that all the normal tools have been bought and paid for. You start looking for other things that you never really wanted to spend the money on, but always irritate you when the shop you're at doesn't have one, or the one they have sucks. I bought this because the place I was at, for a short time, reconditions and resells used cars. At any point in time we would have anywhere from 2500-5000 cars at the facility. It's a huge place, and a lot of dead batteries. On a daily basis I would need to jump start 4-10 cars. Cars ranging from tiny electric cars to diesel trucks. Out of the hundreds and hundreds of cars I've needed to jump, only one of them would the Genius not jump. And this was only due to an extreme discharge (1v), and no direct access to the battery terminals. Only tiny remote jump posts were accessible. The description claims that this will jump up to 20 cars on a single charge. I can vouch that this is an under estimate. I could use this all week, jumping 30 or more cars, before charging. I only plug it in when it reaches 25% according the to the LED indicators. On a very regular basis I would need to jump electric cars. Electric cars have a regular 12V battery for starting, and the motors run off a special battery. More often than not, the 12V battery, and the motor battery would be dead. So I would use the NOCO to start the car, then leave it connected in order to drive it to the shop (up to 1/3 mile from where cars parked). This little jump box will run an entire electric car with AC on full blast for several minutes and barely deplete its charge. However doing this multiple times throughout the day will deplete it more quickly. But if all you need to do is jump start, the charge lasts forever. Obviously you can use it in a similar way on a gasoline engine to run the car, when the alternator is bad. Only a few, very minor, points to mention. The cables are a little shorter than I'd like. This makes it more compact, but sometimes finnicky to get connected to a battery. The location, and ease of activation, of the light button make it entirely too easy to turn the light on. I found many times, I accidentally turned the light on without realizing it, and it stayed on for who knows how long until I noticed. Also it's a bit heavy to carry around. And this I only say because I had to carry it around in a backpack with other tools, and things I needed to do my job. For the normal person, the weight isn't an issue. It is by far smaller, and lighter, than the traditional jump box. And lastly, it takes a long time to fully charge. The better part of the day, if mostly depleted. So that's it. Those minor points are so minor, in no way should they deter you from buying this. I absolutely love this thing, and only hate that I waited so long to buy it. Update: Been using this now for almost 2 years. Still going strong. Working in a normal shop now, so not jump starting batteries every day. The charge still lasts forever. Also use to bench test starters. I now charge it probably once a month. It never goes dead, but if I see the charge is depleted when I use it, I will throw it on the charger. Still the best jump box I've ever used.

Jumpstarted my V8 SUV with no battery 18 times!!

I disconnected my battery; attached the GB20; set GB20 to boost mode; jump started the truck 18 times and it still had 25% power left!! I tried to do the same with the Micro-Start XP-3 and it could only jumpstart the truck one time! Fail! Great value for a small unit. I'm not sure why NOCO only advertises the GB20 as only being 4.0L capapable.... I guess they want you to spend more on the higher models.

Absolutly love it

I bought this NOCO GB70 few months ago and finally got a chance to test it out. My initial thought was this is just a crap and then I read the instructions. So here is my story: I have a 2006 Honda Odyssey and the battery was completely dead. I attached NOCO to the battery, turned on the power and attempted to start it but it did not work. I unplugged it and tried it two more times and did not work again. So I read the instructions which said that in order for this unit to detect the batttery and automatically turn on the booster, the battery should have at least 2A power. In order for thi to work I had to manually override the boost system is just a push of a button (hold the boost power button for about 3 seconds). As soon I pressed the manual boost button, that's all she wrote. The van started right up without an issue. Since then I have used it three times on the same van without an issue (I don't drive the van enough for it to charge the battery :(). So, finally, I am able to say that I love this product and would recommend it to anyone who is thinking about getting a jumper cable without having other vehicles around.

Highly recommended. Works as advertised.

Being elderly, and for the most part housebound, I do not use my car more than a few times a year. The last time that I drove it was last August, and at that time I had to have AAA jump start my car as the battery was completely dead. A few weeks late I attempted to use the car, but even the entry lights and dashboard lights were out. I assumed that the battery was not only dead, but bad too. I decided this past week to start using the car again. To that end I bought a Noco GB40, as the one thing that I do know about cars is how to jump start them. I dot not want to rely on AAA. So, my thought was to start the car and drive it to an auto shop and have them replace the battery. I went out this morning with the GB40, attached it to my car's battery, and saw that the 'Boost Light' did not come on. So, I pressed the manual override, and when the lights flashed went into my car and tried to start it. It turbaned over and start in less than a second. I warmed up the car but did not take it out if the garage as there is too much snow in the ground. Next week when the snow melts, I will jump start my car again and bring it in for a new battery.

4000 amps) This unit is awesome!!

I purchased the largest unit of these (GB-150, 4000 amps) This unit is awesome !!!! I am a Marine (Boat) Mechanic and run into Dead Batteries all the time and I Mean DEAD (less than 2 volts) This unit starts cold V8 engines like a new battery. I have tried all types of jump packs and this one is the lightest and most powerful of any I have tested. Now as far as the Amp rating (in this case 4000) I believe it is more marketing (Amps cumulative over time) VS actual delivered, for instance, I connected this unit fully charged to a 500 amp variable battery load tester to see what it could deliver, It maxed out at 420 Amps and held that for 20 seconds which is phenomenal !!! The units thermal protection kicked in after this. Realistically a modern V8 engine will average less than 200 amps while cranking and a 4 or 6 cylinder will be correspondingly less. Any engine will normally start within a few seconds. Now for some Battery FACTS ! Whenever a car battery (or any rechargeable battery) drops below a critical open circuit (no load) voltage (for 12 volt batteries this would be around 11 volts) internal damage begins and if one has a vehicle which drains a battery below this critical voltage (called a parasitic draw) you lose capacity every time a (what i call a destructive discharge) occurs. Under these conditions even a new battery may only last a few months and this applies to any type rechargeable battery Current rechargeable Lithium batteries would fail in one destructive discharge if protective circuits did not shut them off soon enough.

Best money spent

I use a Genius battery tender so this was the brand I searched for. Rattling around in the trunk for a year, it got me started without breaking a sweat. The second time I had to use it, my battery was dead at 6 volts out of 12. The little charger couldn't start the truck and kept connecting and disconnecting with an overcurrent problem. I decided to let the device do its thing. I kept it on the dead battery for 15 minutes and it finally cranked over and started. Amazing. It took every drop of juice this little gizmo cold muster and it brought back a battery from the dead safely and automatically and got me unstuck. Best money spent. If it ever dies, I'll replace it with the same brand without hesitation.

Follow the operating instructions

Amazing product, however make certain you've reviewed the operating instructions. Had the opportunity to boost my neighbor's small car using the NOCO GB40. The car's battery was completely DEAD. Attempted several times with the NOCO GB40 and failed. Push the "Manual Override" button, however did NOT hold for 3 seconds, hence never received the flashing WHITE "BOOST LED", which indicates vehicle is ready to boost while the NOCO GB40 is in Manual Override mode. Seriously considered returning the product as defective when I decided to run a little test using my 4.3 Liter (Gas) truck. Disconnected the battery from my vehicle and connected the NOCO GB40 directly to the vehicle's battery leads, pushed and held the "Manual Override" button for 3 seconds, received a flashing WHITE "BOOST LED", indicating ready to start the vehicle. Vehicle started without ANY HESITATION and without the vehicle's battery connected. I'll order another NOCO GB40 for my second vehicle very soon. Again, GREAT product...

Excellent Product! Best Jump Pack Ever Purchased!

I am a garage foreman for a large electrical utility company, in charge of maintaining everything from trailers and forklifts to Ford F550's and Heavy Duty International Trucks. I have purchased and used MANY different jump starters over the years. After another popular brand failed me in less than 90 days, I looked for something new. I found the NOCO Boost GB150 and was very skeptical of the 4000 Amps advertised. I purchased two of these 3 months ago and have to say I was and still am extremely impressed. I have been able to jump start 13.0L Navistar diesel engines with ease, something I thought wasn't possible from a battery pack of this size. I use these almost everyday and multiple times in that day. I love being able to use a cigarette lighter 12V charger on my work truck to charge the battery. The digital voltage reading on the front of the battery is super helpful, to check for alternator/generator voltage. A few things I have noticed to get the most out of it. 1. After use, plug it into your 12V cigarette light to charge it. This way it's always ready for the next time and it's the most efficient way to recharge the battery. 2. When jump starting large diesel trucks, don't use the jump starting posts unless you have to. Clamping directly to the battery posts will give you the best results. There have been times when I have used the jump starting posts only and the engine would crank over slowly. When I clamped on straight to the batteries the motor started right up!

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