DEWBU Power Bank 12V Battery with Intelligent Led Display Battery Charger for Heated Jacket, Outdoor Electric Heating Coat, iPhone, iPad, Samsung Galaxy, Android, and Other Smart Devices

I bought this for my Milwaukee M12 heated Toughshell jacket and can confirm it works great, BUT you do need a separate 2.1mm male to 5.5mm female adapter (I bought a right angle one on Amazon that works perfectly).That said, highly recommend this battery:* Flat shape is MUCH more comfortable to wear in the jacket, easy to forget it’s even there compared to an M12 battery pack.* Percentage of battery life display is very helpful for deciding when to recharge.* Battery life / heat time is very good.Really the only minor negative I have found over a few months of regular use, is that the battery goes into a sleep / hibernate mode if something is plugged in and not pulling current. You can’t turn on the jacket while it’s plugged in unless you press the battery button first to wake it up. However, that also helps avoid phantom draining of the battery and in practice I’ve found it very easy to hit the button with my left hand through the material of the jacket without taking it off. It only takes a second and I very quickly got used to doing it as soon as I put my jacket on.All in all this has been a great add-on for my jacket and 100% worth it for the comfort factor alone over an M12 battery brick sticking into my kidney. I wish it was a little bit less expensive because I would like to pick up a second one as a backup battery, but it’s a somewhat niche product and I can understand the higher price point over battery packs that don’t offer 12V out (or charge status displays for that matter).

I’m a sound engineer music producer and i git this to be able to power my UAD APOLLO TWIN while i’m traveling since it needs power supply to work but sometimes i don’t have access to a power outlet. Well, this thing powers my apollo for about 3 hours, enough to do a lot if needed.Really small, light, status screen very useful to know how long you still have.

Same product as the original. Works well.

I usually get a good two hours from a full charge. I used it today for the first time since the temperatures have dropped for this season and I was very pleased with it. Kept me warm when I was away from my car or the house.

So there's been an update since I bought the original battery that only lasted 30 minutes for an hour charge they sent me a new one in less than a week Got it in 100% fix the problem just have to send the old one off

If you do all day hunts or plan to be in the cold all day you will need a extra battery. Would buy from this company again.

Is a birthday gift for my son. Have given it yet. Hopefully it is just what he needs for his hunting experience

I purchase this battery in hopes that I can use it for my cycle gear Hotwire heated jacket liner. Unfortunately I had to run into a few issue that pertain to the battery itself:1.they say there is a DC port you can use for heated gear but it doesn’t come with an adapter nor does it tells you the size adapter you need. (Had to reorder and return multiple items to get the right size)2.this battery only has a type-C port and the 4.0mm DC port so you are limited to what you can charge, however you can go get a type-C female to USB male adapter (female= opening to plug in, male=the plug itself) to make it easier.3.depending on your heat gear, even if you were to get 1 and 2 settled it may no give enough power to turn on your heat gear.So the moral of this review is, please double check the gear/charging cords that you have before buying this specific battery. Otherwise, it works well hence the 3 stars

Needed an extra battery fir my jacket and here it is

The 12v output of this power bank is a real boon.Both the 4X1.7mm barrel socket and the USB-C can provide 12 volts - 18w in the case of the barrel socket and an impressive 36w from the USB.I use this to power an astronomical telescope, which it does effortlessly.The "Charge Remaining" LED readout is a big plus.

Bought an extra battery pack for the jacket and haven't used it yet, but a good power source for my other devices.

When fully charged good life time just Wish I could charge my phone from it too

very good