Heated Bike Handlebar Mitts - Tested at -20C / -4F

I made heated Bar Mitts for my bicycle.

These bar mitts allow me to keep my hands warm at temperatures below freezing. The lowest temperature I've used them at was -22C / -7.6F.

I use light gloves/liners with these mitts for better handling and control on my bike.

They work surprisingly well.

I've used the following material/supplies/gear for this project:

1. Bar mitts by Rockbros - I used these ones
2. USB Heated pads - I used these ones
3. Needle and Thread - I used these needles
4. USB power bank - Many to choose here
5. Higo connectors (these are optional but they help with cable management and adding/removing the mitts to/from the bike) - - I used one six-pin and one four-pin male + female wires like these here
6. Soldering Iron/station (optional, necessary only if you use the Higo connectors for cable management) - Mine is this one
7. Solder wire (optional, necessary only if you use the Higo connectors for cable management)
8. Heat shrink tube (optional, necessary only if you use the Higo connectors for cable management)
9. 3D printed button + camera holder (could be optional as well but I prefer to have something for the button to firmly sit on). Link to model on thingiverse here
10. Screws (optional, only needed for the 3D printed button) - I used M3 x 8mm from here

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Remove the inner fleece from the bar mitts. The inner fleece is connected to the outside part of the mitts with velcro and it's easy to remove.

Start positioning the USB heated pads on the inside part of the inner fleece. You can use tape to keep them temporarily in place

I re-wired the USB heated pads for better cable management, reducing the amount of wires.

I used Higo connectors with 6 and 4 wire terminals respectively and made sure they were connected exactly as the original wires (you can see this better in the video).

I manually stitched the USB heated pads to the inner fleece of the bar mitts.

You can temporarily use tape, but eventually they will detach and come loose. I prefer to have them firmly in place and by stitching them they don't get in the way.

I've designed and 3D printed a button and Gopro camera holder.

I've used Tinkercad to design it. I've uploaded the stl file to thingiverse here. Feel free to remix it.

This will keep the button firmly in place, allowing me to turn on/off the heat and check the level of "heat" easily.

Once I've finished stitching, I've re-assembled the bar mitts by putting the inner fleece back and reconnected the Higo connectors. I've tested the system using a power bank and power analyzer.

The mitts get toasty warm in just a few seconds.

The power consumption is about 9 Watts at full power.

I've then placed the button in the 3D Printed holder and mounted everything on the bike.

I hope you enjoyed this project as much as I did.

Happy biking!

The video will show all the steps.