Can this plugged into a car usb?

NO. Can not support car USB or any common USB port. this plug cable need working with QC3.0 power bank. Cable can help you trigger the QC3.0 POWER BANK provide 12v from USB.

received for dewalt jacket,has a 5.5x2.1 mm male plug and it would not come close to fitting and was also a usbC end was this a shipping error?

This worked fine for my milwaukee jacket. Yours came with a type C connector on the other side of the barrel??

What kind of power bank are users successfully using? Please reply with your experiences

I use this one, in my Milwaukee dial zone jacket, it runs on high on both zones for about 5 hours. (For some reason, the 26000mah bank doesn't work, only the 10400 one) Charmast Smallest 10000 USB C PD Quick Charge Portable Charger, Mini Small 10000mah Power Delivery QC Power Bank, Compact Phone External Battery Pack Chargers Compatible with iPhone, Samsung, Pixel https://www.amazon.com/dp/B07L931FCY/ref=cm_sw_r_apan_glt_fabc_JQEH2A2NST2H8WEV5HB9?_encoding=UTF8&psc=1

Has anyone noticed their battery draining 24/7 when plugged in? I’m not sure if it’s the battery, I have a defective unit or this is normal…

make sure your battery is QC3.0 POWER BANK. SOME POWER BANK WITHOUT QC3.0 FUNCTION but mraked QC3.0 . So you need verify that.

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Smarkey Heated Jacket Adapter Charger USB Plug Cable for Milwaukee, Revean, Snap-on, Metabo, Craftsman, AEG, Makita (Easy for Travelling and Outdoor)

Smarkey Heated Jacket Adapter Charger USB Plug Cable for Milwaukee, Revean, Snap-on, Metabo, Craftsman, AEG, Makita (Easy for Travelling and Outdoor)

Product ID: 485897962

Details

Compatible Devices
Adapter
Specific Uses For Product
Power Bank
Connector Type
usb
Colour
Black
Item dimensions L x W x H
12 x 9 x 2

⚡12V step-up power boost

🔌QC3.0 USB compatibility

🧥Supports top heated jacket brands

Description

🔥 Stay charged, stay warm, stay ahead! 🔋

POWER UP YOUR WARMTH - Transforms any QC3.0 USB power bank from 5V to a robust 12V output, ensuring your heated jacket stays toasty all day.
HEAVY DUTY DURABILITY - Built with premium copper wiring and a sturdy 20cm cable length for reliable, long-lasting outdoor performance.
TRAVEL OPTIMIZED DESIGN - Compact and lightweight at just 9g, this adapter is your perfect companion for on-the-go warmth without bulk.
QC 3 0 POWER BANK ESSENTIAL - Only works with modern QC3.0/IQ power banks—ditch outdated chargers and never face cold interruptions again.
UNIVERSAL BRAND COMPATIBILITY - Seamlessly connects with Milwaukee, Metabo, Snap-on, Craftsman, AEG, and Revean heated jackets—travel ready and hassle-free.

The Smarkey Heated Jacket Adapter Charger Cable is a compact, heavy-duty USB step-up cable that converts QC3.0 power bank output from 5V to 12V, powering a wide range of 12V heated jackets from leading brands like Milwaukee and Metabo. Designed for outdoor professionals and travelers, it ensures reliable warmth with a durable copper wire build and compatibility limited to modern QC3.0 power banks for optimal performance.

Specifications

Brand	Smarkey
Manufacturer	Smarkey
Model	Smarkey USB Heating Cable
Product Dimensions	12 x 9 x 2 cm; 9 g
Item model number	Smarkey USB Heating Cable
Compatible Devices	Adapter
Voltage	5 Volts
Power Source	battery powered
Battery Description	lithium
Batteries Included	No
Batteries Required	No
Battery Capacity	2000 Milliamp Hours
Battery Power Rating	2000 Milliamp Hours
Number of Ports	1
Material	Copper
Manufacturer	Smarkey
Country of Origin	USA
Item Weight	9 g

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