Review, teardown, & upgrade: Electric hand warmer & USB power bank combo

[@miloshilic2523]

Awesome and informative video! I came here just to see what the inside looks like now I can upgrade my pack too. Awesome explanations as well!!

[@saltysenpai4010]

Actually, it will run 2.4amps through the heating elements UNTIL the unit hits a specified heat - That's what the thermistor is measuring. At high heat, it will run 2.4A through for a longer time to reach and maintain a higher heat level (with these tiny warmers, usually 40c-44c. There is a small microcontroller that monitors and controls the temp.

[@fratermus5502]

This matches my observations. I can run mine overnight on low.

[@debstayblessed9549]

Thank you very much for sharing. "Always ask for receipt"🤣 Smart lady

[@kahunablinginz6838]

Thanks for taking the time to make this video and shown what's inside. I'm not going to lie I definitely love saying the batteries I use the same ones in medusaglow. You can check out Medusa disc golf Glower Afterglow pulsar and the search engine definitely worth looking into if you like ultraviolet lights and glow in the dark stuff. Thanks again Positive vibes and prayers God bless.

[@fred.nestler814]

ANOTHER EXCELLENT PRESENTATION!! THANKS

[@robbyv.526]

That is SO cool! =]

[@mamar186281]

Informative. Helped take apart a go warmer brand hand warmer with care

[@saran3214]

You are a clever man!

[@amriamri6732]

mantap bang

[@thechenowth3406]

lithium ion batteries inside of a heat chamber only limited by a thermistor?

[@hank_zeng0228]

nice

[@gerardjachymiak5822]

0:16 nice casting sofa purchased

[@vuaeco]

LOL!

[@mnight207]

Are you in Canada?

[@generalawareness101]

I bet the reason the one side was cooler is that the length of wire to it as that wire is far too small for such current. Change the battery, and the top lid, wires to the next gauge and watch what happens.

[@vuaeco]

Very good point. But I don't think 2.5A has any big effects on these wires.

[@generalawareness101]

@@vuaeco From the video they looked like they were one size smaller than they should be when we know that both sides are using the same heating pads they should be the same temp. The only physical difference is those wires. Wouldn't hurt to see.

[@DIYwithBatteries]

It's a hand warmer, I can use a single 18650 & make it short a little bit DIY hand burner LOL

[@javicc7388]

A ver, consume lo mismo al maximo porque está calentando. Cuando llegue a x nivel de temperatura, corta, por eso son los mismos A

[@oldmgbs2]

I think all wives complain about cool hands.

[@fun_ghoul]

Cold...in SoCal? So it's like 19°C? Please forgive my hearty Ottawa laughter... 😂😂😂

[@vuaeco]

Yes. Over here "cold' means you can't comfortably wear shorts and T-shirt walking on the beach after sun down. We have low standard here when it comes to air temperature.

[@slicktmi]

The difference is the amount of time cycled

[@generalawareness101]

I just purchased one that was round from Amazon for my elderly mother. Cost me 20 bucks on Amazon.

[@vuaeco]

How was it?

[@generalawareness101]

@@vuaeco Arrives tomorrow, and I am going to fully charge it before Christmas for her. It had the best reviews and everyone said it was correct 3 seconds, and you begin to feel it on high and get about two hours on high from the reviews I read.

[@vuaeco]

@@generalawareness101 Would love to hear from you after you try it.

[@generalawareness101]

@@vuaeco Will do. Says it uses LiPo and is 6k ma.

[@fun_ghoul]

@@generalawareness101 Try to do several charge/discharge cycles before you give it to her, just in case the battery is stale. Also explain to her that, though rare, lipo cells can burn like hell!

[@techtinkerin]

Buy your Mrs some gloves instead😊❤️

[@vuaeco]

She always says her blood only goes up to her wrist and it stops there. That's why her hands are always cold. So gloves don't work. :D

[@fun_ghoul]

@@vuaeco There are heated gloves, and jackets too. I don't own any, but not because of any moral opposition!

[@Idahomie]

@@vuaeco Hands r suppose to be cool or cold..your body is made to shunt blood away from any body parts without essential organs. Have her try half'/ fingerless gloves.

[@geekmystique]

As usual, the wife is right. NOT cool. And now it is NOT COOL for two hours!!

[@vuaeco]

LOL!

[@dgin09]

при 2,5А и напряжении 4В - это 2,5 * 4 = 10Вт, при такой мощности и отсутствии теплосъема (работа грелки при комнатной температуре) за 10 мин. температура грелки должна зашкаливать за 60°С....Что-то тут не так...Скорее потребление импульсное на высокой частоте и токовые клещи не могут адекватно измерить ток....

[@fun_ghoul]

1. I wonder if/how much the original battery's capacity would improve with more charge/discharge cycles; it's probably been sitting in a warehouse for a year or five! 2. Maybe the heat difference from one side to the other was because you had it apart, and the hotter half had the battery and board insulating it. I suppose it doesn't matter if the halves are of identical output anyway once it's buttoned up, as the heat will naturally radiate from both halves roughly equally once both heating elements are heating the same airspace inside. Of course, I'd be interested to hear if you -- or, more importantly, your wife! -- feel a difference from one side to the other. Stay warm...in California! Yes, I'm laughing a bit again. 😁✊🇻🇳🛠

[@fun_ghoul]

P.S. It's amazing how a bit of fancy paint makes steel look just like aluminum, eh? That's not a criticism, either. Steel is real!

[@vuaeco]

1. That's a great question. When I received it, the battery was completely depleted (probably by phantom load). It took 4 hours to fully charge it. But it didn't perform as I expected. I didn't give it another chance to charge it back up and try again because I thought I would want a higher capacity anyway. You might be right. It might improve after a few cycles if I had given it a chance. I can always put it in my Opus charger to do some charge/discharge cycles to find out later though. 2. You're spot on about the uneven heating on both sides. I totally agree with your theory. I didn't tell my wife about the temperature difference but she does not notice that either, even up to now. Well, I don't know how you guys deal with the cold up there but down here it's still pretty "cold". Or maybe we're too spoiled! LOL

[@vuaeco]

@@fun_ghoul Absolutely. I thought it was aluminum all this time until I put a magnet on it.

[@fun_ghoul]

@@vuaeco Meh. We're all the same species, it's simply a matter of acclimatisation. A month ago, 5°C felt really cold to me! Today, after a couple of weeks of snowy bullshit, 5°C felt downright pleasant, even with 50 km/h wind. I joke about you in the California sunshine, but if I lived there, my perception of cold would become like yours has become. I should also add that my squat on Algonquin land is positively tropical compared to "up north", especially Nunavut and Nunavik!

[@saltysenpai4010]

The unit is controlled my a microcontroller reading the temp value from the thermistor. If the thermistor is far from the plate (as It is when he disassembled the device, for instance) the microcontroller thinks the temp is remaining low, and thus maintains full power to the heating elements. You're correct about the heat radiation though. I have one of these, much different brand, and both sides heat roughly equal (The side my hand is absorbing heat from cools down much faster, so rotating the unit in your hand is recommended!)

[@stevekent3991]

You buy your wife gadgets which you want…… I wonder if she will get getting some DC motors for Xmas?

[@vuaeco]

LOL! I see what you did there, Steve. Yep, the gadgets with DC motors all the wives crave!

[@fun_ghoul]

Better cold hands than cold feet. Just sayin'.

[@vuaeco]

Haha, I hope not! :D

[@vuaeco]

How have you been, Joe? It's been a while.

[@fun_ghoul]

@@vuaeco Don't ask...but thanks for asking. Hope all is well on your end, đồng chí. :-)