So ive bought a cheap laser pointer. I want to now power it using a wall adapter. The laser currently uses 3 LR44 batteries each giving 1.5 volts(4.5v total). Can i not tap into the laser solder wires and directly run it off a 4.5 v power supply? The problem is ive tried this before and after a few …

Powering a laser pointer using an adapter?

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