I try to make Portable Soldering Iron Station. it can reach about 4 hour with 12V 4A battery part inside or use 220V input. I use 12V 15A Switching PSU, 12V battery part,12 to 24V boost circuit, hakko station circuit. The privous instructable about 24V power supply and hakko station below.
Home Make Hakko Station, Soldering Station New Project 2018
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Step 1: Make a Box
I use wood for make the box and drill my hole for put potentiometer
Step 2: Solder All Component and First Test
I connect all components together like picture below. The battery can charge with battery charger ciruit below.
Step 3: Finish and Use Battery Inside for Test
I have a switch to switch between battery and input source