flashlights

I'm not saying the gravitylight is a good replacement, just that battery powered flashlights do have some drawbacks.

Although that might be true, battery powered flashlights/torches suffer from the problem of leaky batteries.

Newer LED flashlights that run off a single alkaline cell always have a boost converter.

Perhaps when they start showing up in flashlights you'll get better at seeing the snakes.

Not to say that flashlights and solar lights aren’t useful, but if this is cheaper than a flashlight, maybe it’s useful anyway.

I'm talking UK - guessing you're talking US, given flashlights and guns, as opposed to torches and tazers!

On my bike I use a couple cheap silicone mounts[1] to hold my regular bright LED hand flashlights.

I suppose I was naive to assume that I was the only person who loves flashlights.

Solar lights and rechargeable flashlights cost about US$6 to US$10 at retail today, which is a significant amount of money to a lot of people.

We have 3600 flashlights, great for a conference or promo event.

Is there actually a cheaper option, aside from sitting in the dark with flashlights and making sure that no one opens the fridge or freezer?

I did a tally a few weeks ago; turns out I've spent well over $1000 on my collection of high-end flashlights.

As people have already discussed, voltage boosters for things like LED flashlights are already in wide use (usually called a "voltage regulator").

I think they're closer in size to a pair of 123A batteries, the type often found in "tactical" flashlights.

It basically starts with a "code" of two friends talking to each other between houses at night via blinking flashlights, and gradually builds up from there to a full, if somewhat barebones, microprocessor, logic gate by logic gate.

Its surprising how much you can do with a tenth of a watt or whatever, this will work quite well with a remote control or wireless game controller or a kitchen timer, maybe not so well with RC cars or laptop power supplies or the stereotypical "charge your cellphone with a AA battery" product or 1000 lumen flashlights.