Always plugs it right into charger after every use and holds a good charge

The battery needs a little charge in addition to using this, like when you turn the key and hear clicks.

Awesome, just make sure you get the GB40 + at least, works great, holds great charge

Awesome, just make sure you get the GB40 + at least, works great, holds great charge

, i try a bigger one and start right up,even know it was fully charge, very disappointed.

Is liteweight, easy to carry, easy charging, compact and has a flash light.

Although I had charged the NOCO prior to the trip, it still showed a good charge (green light)

Works great, good charge life, no problems

Is great good items and fast charge.

Great and small also, it holds a charge for a very long time

It keeps a great charge, its compact enough to fit in my glove box, and it's very easy to use

So, with Amazon I will have to return it just to maybe get another on with a charging cord, what a waste of time and money.

The compact size makes storage easy and charging convenient as it is not in the way inside the vehicle while it charges.

But once its charged it can stay in the car for months and not lose the charge.

Holds a charge well, and started me up even when it was so dead I didn't even get a click when I turned the key

So easy to use - it’s so small and is charged with USB so

Very easy to use just need charge before you use it at first time

Very nice product used it many times to jump vehicles over the past year very durable holds a charge for a long time specially when you never know when you’re going to need it or to just help our neighbor

Even with long charging times, the jumper does work on my car.

battery is fully charged, light works...

Specifically says charge is good for 6 months

Works very well and holds a strong charge for quite a while.

Also, it quickly loses the charge, making it pointless to have when you really need it.

Genius Boost holds its charge; had not been charged in a year.

One full charge will give you several boost.

But, the typical lead-acid ones lose charge quickly, they are heavy, they are bulky, and they seem to only last a year or two at the most.

It still holds ample charge after starting an engine

But it will not take a good charge

Already started four dead batteries and just one charge.

Just recieved, charged over night, and still didnt produce a charge, lame

Though, there are no fancy charging technologies, so don't expect super fast charging times

Easy to use too and had enough charge left after to charge the battery again.

Full disclosure... the second one for my car came bad- charge should only take 3 hours total, after charging for over 16 hours the unit was still only showing 25%

Really have not had the necessity to use it yet but it appears to be well made and sturdy - charged

I love the"no spark clamps", the light is SUPER BRIGHT and quick USB charging is awesome, can even be charged by a battery pack

This Noco Boost was fully charged and i put in my truck for emergencies

No more cables, extension cords with portable charges etc..

Functions and features between the two are similar with the Alpha 85 coming out ahead with faster charging, an included 65w charger, LCD display, and Qulacom 3.0 charging support

Thus far I have stored my unit inside and it keeps it's charge REMARKABLY well.

It is compact, powerful, easy to use and holds a charge well for multiple uses.

does not hold a charge goes dead even when it isn't used

Used this product twice already on a Honda Accord...worked both times....charged right up

My GB40 would hold enough charge to start a 2 cyl ATV, but couldn't start it a second time 30 minutes later

charge so unit is now useless

The unit came with a faulty charging USB cable

So light I wasn’t sure if it would pack enough charge, it did.

Conveniently, it stopped charging in January 2020 when the 1 year warantee had expired

It sits in my car and every so many months I take it out and top up the charge

Light, holds the charge well, easy to stash under a seat, very happy, works great.

This is a must for every car owner whose car has been mostly sitting during the pandemic and whose battery doesn't have enough charge remaining to start.

Then less then minute gave enough charge to battery of the 5.3 L V8 engine and it started car

The Charge is terrible on this unit for the price.

I leave GB40 in the car for days/weeks and it seems to lose little bit charge

Great jump starter, just wish it had faster charging

It had dropped down one light from full charge, so I just plugged it into computer and topped the charge off

Holds a charge for a long time and works well and quickly when you need it.

Holds its charge while in storage and surprisingly doesn’t lose much of its charge after jumping

I re-charged it and kept it in the car -- a few months later when I needed to use it to jump start the drained battery I found the unit had totally lost its charge and was useless.

I would not recommend this product due to the issues I’m having charging it.

The unit holds charge for very long time (atleast 2 mo in my experience - but longer from what I read in reviews);quite easy to use and work almost instantly.

Picked one up at my local auto electronics store and away I went to see if this had enough charge to give her a boost.

I was concerned it lost its charge

Turns out it it was dead - no charge

The problem is Lithium ion batteries hate being kept fully charged, it literally destroys the battery

Worked several times for dead battery and charging cell phone when out in the woods.

This little jump box will run an entire electric car with AC on full blast for several minutes and barely deplete its charge

I wish this product had a more robust charging connector.

Now it does work extremely well when fully charged.

First one worked for three times, always kept indoors and with good charge

I used that product 4 times since leaving on a dead battery and it worked evry time.. quick charge of about 2.5 hrs

Doesn’t maintain charge well.

absolute worthless will not maintain charge will only jump one car discharges quickly with any usb device connected

Guess we will dispute the charge on the CC instead.

…It’s small and fits in glove compartment but constantly having to make sure it’s charged is a pain and just a constant reminder you might break down sometime…

Took the Noco out again and topped off the charge (which didn't take but an hour to be certain) for the next expected dead battery morning.

This charge is amazing, easy to use and worth every penny.

After doing this 3 times in one day the car had picked up enough charge from the NOCO that it started

I am not happy with the poor charge retention considering how expensive it was compared to the warehouse item.

It loses barely any charge on each use and I haven't had any problems with it

If it's gonna loose charge within a couple

So I plugged in my handy USB current meter, and found that the so called Genius Boost is not even taking a charge

(charging lights will slow pulse) and went back to jump - nothing.

VERY EASY to use...holds a charge

Long lasting super fast charging and it jumps my

The battery was beyond dead and I hooked up the GB40 and it gave the battery enough charge to start the truck.

Fast charging at home outlet

There are other safety features that come with it as well, LIGHT & charging functions for phone.

This battery booster has a fast charge feature so I can get it fully charge in less than an hour

However it looses it's charge too fast you have to charge it every couple of weeks in my experience or it wont be charged when you need it even if you aren't using the unit for anything in the interim.

Easy charging and portability.

I've jumped several cars with it and still have a good charge on it.

What a life saver!Easy to use, holds a charge for a LONG time, fired my dead battery back up in 2 seconds

Our Toyota Highlander's battery was completely dead, to the point where it did not have enough charge to be detected by the NOCO Boost

The product lists it as charging a 12 volt lead acid battery

Works great, good charge life, no problems

I topped off the charge and went off to the parking garage with it and the tow truck number at the ready

This thing works great unless you leave it charging in your rig, which I presume most people will want to do

Plugged in to charge and battery FAILED to accept charge displaying two lights

I was surprised that it didn't lose much charge over that period

We left our car parked at a small airport for 4 months with the NOCO sitting on the passenger seat and the charger still had enough charge to start the car

Excellent choice qork like charm, last long charge.

The flashlight and charging worked fine, but I spent a lot on this to have it not work when I needed it.

This has held a charge very well and jumped an SUV after sitting for some time.

Recharge - After using it I reconnected the charge to top it off as it had been 3 months since I had charged it.

The Noco Boost Plus charged at the first instance, but lost charge within a few weeks

Holds good charge

This one works on larger engines, holds a charge much longer and is a much higher build quality.

Love that is charges fairly quickly and it charge the car in one try and on limited charge.

will jump most cars, holds charge for a long time and easy to use

No more jockeying a second car close, no more untangling jumper cables, no more waiting while enough charge builds up.

It is a good value, to keep in your vehicle when needed.. top the charge every few months while stored

It takes a charge well and I can easily charge my phone or small electronics.

Didn't work wouldn't hold a charge faulty unit unfortunately

I lost the proprietary charging cord for my old portable charger which made it useless, and definitely not a problem here!

Works great and have used multiple times still holding 75 charge, always liked Noco products

A single charge on the iPhone 7 Plus and the battery is dead.

They hold 100% charge for months and months - and you can top them off with your car power ports

It's an amazing product with a great charge

I charge it full and check the battery level every month to see how well it holds a charge and even though I don't use it the battery meter always drops to half

This is a great product it works just as advertised and maybe better always have it with me for emergencies and rarely ever looses charge

1 full charge is enough to jump the aforementioned Mazda 3 multiple times before it ran out of juice

Led light is bright, takes a charge and works great to jump cars and light trucks.

Holds a good charge and compact bag holds charger and everything.

Doesn’t hold its charge and has never worked

This is a great product it works just as advertised and maybe better always have it with me for emergencies and rarely ever looses charge

I brought it in a few days ago and it still showed 75%+ charge--like I said... amazing!

Fast charging

There was no sign of life and this starter got it going with the super- charge setting

The bright lights and device charging feature will come in real handy for camping trips or emergencies

Easy to operate alone once you use it once and holds a great charge

But it was charging slower than my car, so stupid product!

It holds a pretty decent charge,

A single charge is good for several jumps

Once charged, the battery was good for atleast 6 jumps on a weak battery and 3 jumps on a completely depleted one , before requiring recharging

And drains about 50% charge

I have used it twice and the charge is still 100% so much better than pulling out the jumper cables or huge battery jumper/charger.

Once the vehicle is running wait several minutes for the car battery to start taking a healthy charge, then plug the battery pack into a charging port and recharge the pack

Worked both times and still has a full charge!Was so impressed I bought my daughter one for her vehicle as well.

I really have no idea why why this did not work (the only thing I can think of is that it was had lost a bit of charge, but the directions say it should hold a suitable charge for quite a long time)-

My car keeps loosing charge since I haven’t gone anywhere in the pandemic and this bad boy gives my battery a nice little jump when I switch it to unsafe mode

I highly recommend this compact, lightweight, quick-charging, versatile unit to anyone seeking peace of mind while driving anywhere.

The charging was easy through the included charging cable and my charging block

My 2004 car has trouble staying charged in the cold, and when I'm not driving as much due to pandemic

The lights are bright, user friendly, easy use and charge and you can charge other USB devices

(It does come with a car charger, but the charging is quite slow.)Overall verdict: a handy little gizmo to have in the garage, and perhaps on a long road-trip, but don't expect it to be perfect in the information it's giving you

Holds a charge well, used it to jump a 5.4L truck and a little 4cyl car, did great.

Holds a charge for a substanital amount of time as well

I would recommend to the manufacturer that they use a more robust charging port

The Noco Boost Plus charged at the first instance, but lost charge within a few weeks

would click off a few seconds after just a couple seconds of slow c ranking

USB C is much faster, if this model is available with a USB C charging port I would like a replacement...

I had to use override mode (note it's not super dangerous as they scare in their videos :) ), and voila,

It worked as it should.

I bought this mostly for peace of mind, however, I've used it nearly a dozen times for both of our cars as well as neighbors cars as well as for my phone when the battery was almost dead

It lasted longer (for me) than the one-year warranty it came with, yes, but there is no reason lithium batteries of the type used in this device should fail as quickly as they did.

Haven't done a jump start yet but will update when I do, as well as when I see how often I need to recharge just from sitting.

so we needed a way to jump the car from our garage as well as on trips

Getting the car fixed this weekend, but in the meantime my wife has already mastered the NOCO as

Pulled out this booster and it started right up just as fast as with the vehicles own battery

We have charged at home in a wall receptacle as well as in the lighter socket of the car and both gave equal charges.

OUT MY JNC660, PLUGGED IT IN AND STARTED IMMEDIATELY.Maybe thing thing works as it should on smaller engines, but I would not trust it on larger

It's already saved me once as well as having saved several other folks