3xAAA battery adapter (for headlamp)

My headlamp consumes lot of current and I was bored of buying or charging AAA baterries. With my 10Ah powerbank it shines very very long time :)

Maybe it can be used with other devices.

But be carefull 3x AAA is only 4.5V and powerbank gives 5V, so be sure that your device can handle it. You can add diode(s) to drop the voltage.

Also check if your powerbank can supply the current that the headlamp consumes. My headlamp needs about 1.5A in the power mode.

Extra material:
2x M3 nut