I recently got a midnite manager Victorinix Swiss Army Knife. It is a really cool keychain gadget that has a Pen, 3mm white LED, knife, file/flathead, scissors, bottle opener/phillips head.
It uses a 1.55 volt small battery (389/390). The led output isn’t all that bright unsurprisingly. I was wondering if it would be possible to mod it to work better.
I would think the simplest way would be to use a 3 volt battery that is about the same size though it would need to be really close in size. That ought to effectively overdrive it.
I come across this page while searching keychain tools,
If you can open and reach the led, I can advice you to change the led with powerful nichia 5mm leds,
as I did in this thread
Nichia 5mm would be ideal but the scales on the Victorinox Classic/58mm line are not very thick. Nichia do have a 3mm 18900mcd white LED though so I would try that.