Makita power for your Millwaukee heated gear

thingiverse

I have Makita tools 18v but I wanted a Milwaukee heated hoodie or vest so I looked around. Milwaukee has an 18v power adapter to run the heated gear from 18v Milwaukees batteries. A little poking around and some help from friends at my local tool store gave me enough info. Okay, now the warning: this is a personal project. If you choose to copy it, you take all risks what ever they may be and accept that this will probably void any and all warranties. May or may not burn your house down or make your Brand X tool owner friends hate you. I am not responsible for any damages this thing or the use of this thing causes. First we need a jack to fit the plug on the hoodie. https://www.aliexpress.com/item/5Pcs-3A-12v-for-DC-Power-Supply-Jack-Socket-Female-Panel-Mount-Connector-5-5mm-2/32599220409.html?spm=a2g0s.13010208.99999999.262.BEmM73 Now we did some digging and found the unloaded voltage of Genuine Milwaukee adapter is about 15.3 volts. So we need a DC to DC buck converter. https://www.aliexpress.com/item/5PCS-XM1584-Ultra-small-size-DC-DC-step-down-power-supply-module-3A-adjustable-step-down/32531438467.html?spm=a2g0s.13010208.99999999.276.BEmM73 I would set this somewhere above 12v but below 14v to be safe, and just because Milwaukee did it we will add a USB port. https://www.aliexpress.com/item/Fine-6-24V-12V-24V-to-5V-3A-CAR-USB-Charger-Module-DC-Buck-step-down/32811446277.html?spm=a2g0s.13010208.99999999.283.BEmM73 Now again from what I have read and seen looking at these jackets, this should also power the DeWalt and maybe the Bosch and possibly the Snap On as well. Your mileage may vary. You might need a different plug or a different voltage setting, but really if you think about it, this will let you run pretty well any small electronic device from a Makita battery. Say you need to put a router or something on battery power for a few hours; pretty well anything that needs 5-18v under 2a could be run from this. This is a work in progress. My parts are on the way. If anyone prints this before I do, or has any good ideas, let me know. I am working on a low voltage cut off circuit to protect the batteries.