Gear Review: Nordic Heat Handwarmer and USB Powerbank 10,000mAh

After just popping by for a chat with the nice folks of Nordic Heat at IWA, I found myself leaving with their Large Handwarmer / USB Powerbank. In this review of the Nordic Heat 10,000mAh Handwarmer and USB Powerbank, as well as getting a good feel for it, I have carried out some detailed measurements of output performance for both the heating and USB powerbank.

Thermal image taken with FLIR Scout TK

A few more details:

What’s in the box?:

This is how the Large Handwarmer / USB Powerbank arrives.

A good look round the Handwarmer / USB Powerbank:

It’s a simple concept really, it gets hot, and can charge your phone (or other USB device). Here are the details.

In The Laboratory:

For these tests, I wanted to measure the actual performance of the USB powerbank aspects and then move onto the heat output.
First are a couple of USB power traces for both charging using the supplier charger and cable and then with the powerbank discharging into a large load, again using the supplied cable.
Being a special triple connector cable, I suspect there is some intentional throttling as it only charges at 1A, and for the output it only manages around 1.3A with the supplied cable.

Now, putting aside the supplied charger and cable and recharging with a high power USB charger (6A) and high current cable, the powerbank charges at 2A.

Then seeing what output we get using a high current USB-A to USB-C cable into the large load. Now the powerbank outputs 2.4 – 2.5A. From the graph it does look like this is pushing the output to its limits as we see some power switching noise, but a very solid performance.

A measurement I was not able to make a graph of is the cumulative output measured charging phones. This came to 32.873Wh or 6913.2mAh.

To test the heating output of this handwarmer, a dual probe digital thermometer was used to measure the ambient and surface temperature of the handwarmer. This allows the ambient temperature to be taken away from the surface temperature to remove external temperature variations. The measurements were logged (by video) and used for this graph.

The temperature shown is Degrees C above ambient, and as you can see the output is fantastically stable.

What it is like to use?

Nordic Heat have two sizes of handwarmer/powerbank. As you can see, this larger version, is a good handful for a hand that takes an XL glove size. The smaller version might be a better fit for some, but this does compromise on heating time and USB output power, a compromise worth considering.

There is a built-in light which you access via the power button. It can make the handwarmer into a torch with a very long runtime. A useful and usable addition. Just remember that you are taking from the available power for hand warming or device charging.

Our growing reliability on mobile phones and tablets makes powerbanks almost a necessity, especially in remote areas. Performance as a powerbank is good (see the technical testing section), and you can power up devices with a solid 2A output.

Not quite qualifying as technical testing, I thought it was important to check the heat distribution of the handwarmer to ensure it didn’t have cold spots or problems with heat distribution. So for this I aimed a FLIR Scout TK at it. In this set of images, we start with a control shot with the handwarmer off and left to reach ambient temperature. There is little contrast in the image as there isn’t really any heat gradient apparent. After switching on the handwarmer and leaving it to get up to temperature the heated portion stands out clearly. The heat distribution is nice and even and extends fully over the body, with only the unheated plastic top remaining cooler. In the last image I put my warm, uncovered, hand into view to show how the handwarmer is properly above body temperature and will provide good heating.

Do you need one? Well, do you have a USB powered mobile device – then that is yes for its powerbank capability. Do you like cold hands and feet? No, then that is yes for the handwarmer / heating facility.

Why did I say feet? During testing I found that this wasn’t just something to take when venturing outdoors, but any time you want a heat pack. I’ve used it to warm up my feet in a cold bed, to apply heat to a pulled muscle, to preheat hands prior to putting non-heated gloves on, and generally provide comfort where a bit of warmth helps.

The on-demand heat is where this wins over every other heating option. No boiling water, microwaving gels, lighting a fuel catalyser, just switch on and off as required, anywhere.

Review Summary

The views expressed in this summary table are from the point of view of the reviewer’s personal use. I am not a member of the armed forces and cannot comment on its use beyond a cutting tool or field/hunting knife.

Something that might be a ‘pro’ for one user can be a ‘con’ for another, so the comments are categorised based on my requirements. You should consider all points and if they could be beneficial to you.

Things I like

Good battery capacity.
2A+ USB output.
Over 7.5h heating on a full charge.
Excellent heat distribution.
Useful to also have a light.
Comes with cable and charger.

What doesn’t work so well for me

Supplied USB cable seems to limit output to 1A.
Supplied charger only provides 1A.

Gear Review: NORDIC HEAT Heated Glove Liner (Thin)

Having been thoroughly impressed by NORDIC HEAT in previous years at IWA, at IWA 2018 I made sure to visit them to be able to talk directly about their thoughtful approach to electrically heated clothing; plus I wanted to take the opportunity try some of their products at the show. I was so impressed, I came away with some NORDIC HEAT gloves to take a more in depth look at.

In this case the I’m testing the Glove Liner (Thin) gloves which are the lightest-weight gloves in the NORDIC HEAT range. They give you the option to use them on their own as lightweight heated gloves, or are thin enough to be worn under outer gloves, adding heating to otherwise unheated gloves.

A few more details:


In their logically thought out approach, the whole system is modular and the power packs and charger come as a set to be combined with various items of heated clothing.

A good look round the NORDIC HEAT Glove Liner – Thin – Things to look out for here are:

Despite being a lightweight glove, the construction is solid and attention to detail in the fit and comfort is excellent. The entire inner surface has rubber dots to really add grip, plus there is a touch screen compatible pad on the index finger.
NOTE: (Added at the request of NORDIC HEAT) – NORDIC HEAT recommend fitting the battery pack the other way up to the way shown in the photos. They intend for the power cord to go straight down into the glove rather than being looped round.

What it is like to use?

On this subject of heated clothing, I am reminded of a quote from The Hitchhiker’s Guide to the Galaxy by Douglas Adams:
“one of the lingering questions on NowWhat is how the boghogs manage to stay warm in their skins. It says “if anyone had wanted to learn the language of the boghogs, they would have discovered that they don’t and are just as cold and miserable as everyone else”.”
And this is simply because in the past you had only one choice in the cold, and that was to try and reduce how cold you were with more clothing – ‘try’ being the operative word. Once cold starts to set in, the body reduces blood flow to the extremities and they get even colder. So really you were just a certain level of cold, but didn’t have much choice so got used to the discomfort.
Heated clothing provides us with benefits beyond simply the comfort of feeling warmth; it keeps us functional longer in more extreme conditions.
I use it in a few different ways, all of which are subtly different. These are also based on the fact that there are batteries which will run out, so you can’t simply run them all the time.
The first of these ways of using them involves actively combating the cold to stop it setting in. This is where you start off with the gloves on, and turn them on before even going out into the cold. Keeping the hands warm with heating from the very start means you maintain the best dexterity as long as you have battery power for the heating.
Second, and for me a very important way of using them, is for recovery. There are situations where it is not practical to use the heated gloves initially, and other gloves are used. Inevitably the cold starts to creep in and your hands become colder and colder. Once you reach a certain point you really need to recover. Swapping to the heated gloves and using them to bring back the circulation gets you ready to go again. As these glove liners are not themselves thermally insulated, on their own they do not provide much protection beyond keeping some cold air off the skin, and certainly don’t help with holding very cold tools or touching cold surfaces beyond the active heating provided to the side of the fingers. This is why I frequently use other thicker gloves, most of which are not large enough to allow the use these as glove liners, mainly due to the battery pack bulk, so the ‘recovery’ approach is very helpful.
Third on the list is preparation for the cold environment. We are not always warm to start with and the other gloves you are going to use might be chilled; you can use these heated gloves to give you hands a real boost to start with. The non-heated gloves can then be warmed with body heat from this pre-warming and the circulation boost.
You may find different ways to work with them, but this is what has been good for me.

Though I’m going to move onto observations that are more specific to these gloves, there is one characteristic I need to mention which is the same for all heated gloves that have their own battery packs. Having the battery pack in the cuff gives the gloves a strange balance, bulkiness and heavy feel. In the case of these glove liners, this is even more pronounced as the gloves are lightweight, but it is the same in all heated gloves. The bulk at the cuff tends to interfere with your watch; I frequently go without a wristwatch when using heated gloves. This is something you need to accept if you want the benefits of independently powered heated gloves.

The next comments are supported by the photo gallery coming up next –
Thoughtfully, even though these are called glove liners, a touch screen compatible index finger tip has been included. Though it doesn’t look conductive, it certainly works. Be aware however that, just like every other touch screen compatible glove, the finger contact area is pretty big and imprecise. It is more of a case of being able to answer a call without taking off the gloves than being able to make a call. There is not enough precision to tap on a number or name in a list. Certainly useful if you accept the limitations.
Overall comfort is excellent and the fit is good. In this gallery the first three photos of the glove being worn are without the battery fitted. Skip forward past the photos showing the button illumination to see the bulk added by the battery pack. You get used to this bulk quickly, but it requires some consideration.
It is nice that the power button itself is directly illuminated. When first turned on (using a long press), the first of the three modes is high. To cycle through medium, low and back to high you briefly press the button. A long press is then needed to turn them off again.
Last in the gallery are some thermal camera images of the excellent design of the heating in NORDIC HEAT’s gloves. Each finger is surrounding with heating elements which are clearly visible. Frequently, heated gloves only heat the back of the hand, meaning there is only heating on one side of the fingers. NORDIC HEAT’s method applies heat to two sides of the finger getting more heat in.

Using the FLIR Scout TK thermal camera again to shoot some video, this shows the gloves heating up from cold and those excellent heating elements.

Video Edited with – Cyberlink Director Suite 5 (PowerDirector 16 and AudioDirector 7)
Camera – FLIR Scout TK    

How long do they run?:
Using a dual thermal probe to measure the ambient temperature and the temperature in the middle finger of one glove, the time/temperature graph was plotted of the difference between these two temperatures. This was carried out in a cool but sheltered area on HIGH mode.
One glove ran out of power at 1h43m and the other at 1h46m.
Recharging the batteries from completely flat takes around three and a half hours (3h33m for one and 4h07m for the other).
The charging indicator on the charger will be solid red if both batteries are connected and charging, and solid green if they are both fully charged. If the indicator light is flashing red, this means that one battery is charged and the charger is “waiting” for the second battery, or only one battery is connected for charging.

In the graph below, the line marking ‘Glove Battery Exhausted’ is the time when the power light went out.

Some Modifications:
There is only one aspect of these gloves that didn’t work for me, and that was the cuff adjustment tabs. With the batteries adding bulk to the cuff, you really need to open the cuff adjuster to put them on, and then do it up again.
For the first hand this is fine, operating the cuff adjuster with bare hands is no problem, but then we get to the second hand, and now we are using the gloved fingers to grip the tab.
Immediately, as you do up the cuff adjuster, you find the Velcro hook part grabs the fabric of the thumb doing it up. This quickly starts to ‘fluff’ up the thumb fabric and is going to wear it out much faster.
Worse than doing it up, is trying to get hold of the cuff tab to undo it. You really have to press the thumb into the edge of the tab to get hold of it, and so onto the Velcro hooks. This is when the thumb fabric sticks to the hooks and has to be ripped off them.
All it really needs is a little grip tab (which has no Velcro and extends enough to grip with the gloves on) to allow you to get hold of it, so I got out my ‘Velcro control pack’ to make one. As I find the tendency of Velcro hook material to grab things quite annoying I have a selection of hook and loop strips (my ‘Velcro control pack’) that I can cut to size to cover up excessive hook material or in some cases extend it.
The following gallery steps through what I have done for each cuff adjuster. A simple job that took five minutes to do, and has transformed the fitting and removal of these gloves.

Review Summary

The views expressed in this summary table are from the point of view of the reviewer’s personal use. I am not a member of the armed forces and cannot comment on its use beyond a cutting tool or field/hunting knife.

Something that might be a ‘pro’ for one user can be a ‘con’ for another, so the comments are categorised based on my requirements. You should consider all points and if they could be beneficial to you.

Things I like

All fingers heated on two sides.
Touch screen compatible index finger.
Turns onto maximum power.
Simple and reliable interface.
Adjustable cuff.
Good grip.
Dual purpose, liner or lightweight glove.
Modular design for use with other NORDIC HEAT products.

What doesn’t work so well for me

Cuff adjuster tab too short and difficult to get hold of.
Batteries can be fiddly to fit into the pocket.


Discussing the Review:

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Tactical Reviews at IWA 2018

This year was the 45th edition of IWA OutdoorClassics at the Exhibition Centre Nuremberg with 1,558 exhibitors and almost 47,000 trade visitors from around the world.
Exhibitors from almost 60 countries and trade visitors from about 130 countries gave the 45th edition of IWA OutdoorClassics even more of an international flavour than last year.

Tactical Reviews was there, and included here is a gallery of products that caught my eye as I went round the vast exhibition. Of course this is only a small taste of what was on show, with excellent products from Pohl Force, MecArmy, Mantis, Luminox, Armourlite/Isobrite, Morakniv, Nordic Pocket Saw, Hultafors, ZT, Victorinox, Leatherman, Fox, Oberland Arms, Buck, SOG, Nitecore, DYX, Wiley X, Spyderco, Chris Reeve Knives and Nordic Heat.

(When viewing the gallery, click on the image to remove the description, click again to bring it back)