Head lamp battery hack: from AAA to Li-ion rechargeable battery 

Very nice mod and I definitely appreciate the use of the magnets instead of trying to fit some sort of spring and plate for the contacts.

I used the old used disposable e-cig battery with the USB charger They fit perfectly

Another great DIY mod video! Thank you! I especially like your use of the nickel strips/magnets to connect the Li ion cells! Very creative!

Very Nice! I always like modifying everything! Performance makes our lives so much more involving! Thank you for this video!

This is one of the best mods I have ever seen.

I saved the battery and charger circuit from a left behind disposable ecig for a headlamp :)

Awesome... Show this with the light switch light from harbor freight please..

Awesome as always. 👍

great job

Love your projects! Keep on keepin' on!

You probably ought to add a diode to prevent accidentally reversing the battery and damaging the electronics.

I've done several of these myself, and like you, opted for external mounting! But I found that recharging them inside the unit like a phone doesn't work bc phones have circuitry to handle the charge properly. Also for a crank type LED lantern the li-ion is brighter and stays charged longer. I don't think it charged faster bc the li-ions have more capacity.

Have the external case go to the back of your head. It will balance out the weight, and you could put an even bigger battery.

cool!

Good job. Night try it out myself.

👍

Thanks

Great great video!! Is there a battery charger that you would recommend?

And the Lord said 'Let there be light' And there was light.... .... ... .... You could see for f**king miles:)

Why not just buy a rechargeable one