Brother PT-H100LB Label maker USB PD conversion

Dummy battery with metal connectors made out of M4 screws. Connect to a power source and use the label maker without wasting batteries. Tested on PT-H100LB. Might fit similar models. Standard uses 6x AAA batteries.

Materials:

2x M4x25 screws

6x M4 nuts

4x M4 washers

USB-C PD trigger (configured to 9v, soldering may be required)

Spade crimp connectors

Some wire

I got this PD trigger:

https://www.aliexpress.com/item/1005005324613468.html

How-to:

Put two M4 nuts in the nut traps.

Screw in the lower screw all the way, add a nut, washer, washer, nut.

Add a nut, washer, washer, nut on the upper screw. Screw it in. Let it stick out ~3mm. Adjust for good contact.

Solder + and - on the PD trigger, crimp the other end of the wire to spade connectors, secure them between the washers using the nuts.

Pay attention to the direction of the screws.

I drilled some holes in the side of the label maker, then cut a slot with an x-acto knife.

Glued in.