After a long time delay, finally got time to continue the project.

Gathering the materials. I’m using charging module so I don’t have to replace the battery every now and then.

I replaced R3 with bigger impedance resistor to decrease the output as low as under 100 mAh.

Testing the wiring, it worked as expected despite the messy soldering job.

BUT….

The over all components aren’t small enough to fit into the Zippo insert :frowning:

It was my bad not to assure the size of each materials :person_facepalming:

Now I need to cope with myself and wondering if I shall continue or pivot to another project in this short time left :question: