@mike808@rogerbacon In case anyone is interested by the idea of those USB charging AAAs, I would suggest don’t. I had some (not that brand) they were terrible, they stopped working after about 4 charges, and they only held about a quarter the amount of a regular rechargeable, so it was less total capacity (including all charges) than a regular non-rechargeable would have been, but with added frustrating charging and costing a lot more.
The USB charger mentioned by @chienfou above, plus regular rechargeables, makes a lot more sense.
(But for an emergency low-drain tiny flashlight, non-rechargeables probably make the most sense because you’ll most likely lose the flashlight before you drain it, and non-rechargeables generally hold their charge for longer when not in use.)
I have a LaCrosse charger, so I’m familiar. I was just thinking it would have been a good product pairing.
Rechargeables on AAAs don’t really make sense other than for your favorite remotes and computer mice that get regular use. They just don’t hold that much total energy and dissipate too much for never or rarely used devices (in a drawer, or emergency use).
There are some high density rechargeable AAAs, but they cheat a bit on the sizing so they are tight fits, which makes replacing them a pain in small devices (probably like these flashlights). They also tend to swell, making them even tighter fits.
Rechargeables are just not for high-drain applications, like flashlights are. Especially as they are using high wattage LEDs to generate more and more light. While still more efficient than incandescents and halogen bulbs, a 3W LED (or 3x1W LEDs) will still drain a 1.2v AAA, even with high capacity 1200 mAh, pretty quickly.
Alkaline AAAs are about 1200mAh, but at 1.5 volts.
The voltage drop as they are drained is what kills rechargeables for driving LEDs because pulling up the voltage means circuitry, and in the world of $0.01 per 10K units, even a miniscule extra expense for another chip or a tiny circuit board kills the economics of the product. Alkalines have a flat voltage under load for longer with a sharper drop as they approach depletion, while rechargeables tend to decay linearly under load.
Energy density, cycle, and load characteristics are where the action is in battery tech these days.
I have the lights from a mehrathon. Not bad at 2 bucks each. They are a little bigger than the Arc/Fenix style of AAA light and they have the stupid steel carabiner (way heavy for its size), but you can remove that. They are pretty bright, like maybe 20 lumens, much brighter than the old 5mm lights.
I’m slightly tempted by this combo but only to get a style of powerbank that I don’t have yet, but then: what I’m collecting powerbanks now?! And I already have enough of the lights. They are good little gifts I guess. Gonna pass but only because I have too much of this stuff.