SamSuka
bigclive
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Vince's Cambodian flashlight

Vince the crew chief on this job often travels around the world with his work. While in Cambodia he bought this light purely for us to take apart.

The charging circuitry is extremely minimalist.

https://youtu.be/P_2Lg0libww

Vince's Cambodian flashlight

Comments

They rely on the battery being in good health to keep the voltage at a controlled level. A zener diode does not really work well with a lithium cell due to its wide voltage range depending on current.

Big Clive

Looks like you can use it as a taser.

Curtis Hoffmann

I see this circuit in many devices including electric zappers and I wonder why not just add a 4.2V zener diode in parallel to prevent the battery from overcharging?

Ramast

A "Cambodian flashlight" sounds like a euphemism for...something else.

Adam McKnight

A flickering LED whilst charging would drive me up the wall.

Andrew Donaldson

He got it purely to take apart.

Big Clive

Awkward when Vince asks where it is🫢

RonNona

It's very crude and basic compared to a modern USB charged lithium flashlight.

Big Clive

Seems useful, not going to put it back together?

RonNona


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