I’ll bet they can be safely used direct drive on two Eneloop or any 2 NiMH or NiCad cells, or two primary 1.5V cells of choice, like button cells or alkaline (but not 2 Energizer Lithium), also probably fine direct drive with a single primary CR123A or any size 3V primary.
Who is the manufacturer of “rngwn’s LED’s?” If they have been named, I missed it. It doesn’t matter to me, but it would be easier to refer to them with the name of the manufacturer, rather than, “these LEDs” and “those LEDs rngwn found” or some arcane code that is effectively meaningless because no one knows what it means. One thing Yuji really has going for it…. easy as hell to know what someone is talking about when they mention “Yuji.” Just a thought.
It’s likely Sophia. But since rngwn found them, have djozz tested them, stocked them and gave them a good naming scheme, I’ll stick to the terms he coined.
This 2$ keychain would be nice for these 5mm Leds if only mounted a real battery and circuit board,
also solar panel is not connect on board according reviews.
And why 3 Leds?
Yeah, that’s probably a working unit. But I trust the customer who took that light apart, uncovering the sad truth. It’s fake all over, not worth of rngwns fine LEDs.
Due to the new UK import law that came into effect since January 2021, I won't be able to accept any order less than GBP135 from UK buyers until the situation changes, (or I am hopefully misunderstood about how this law works).
UK Buyers Please Read: Due to changes in UK customs regulation requiring overseas entities to register with HMRC and collect VAT from shipments under GBP135 at point-of-sale, buyers from UK must make a minimum purchase of GBP135 so that I can ship the item out under the old rules. Any UK purchases under GBP135 will not be able to ship out until further notice. Regrettably, I do not find such VAT registration with HMRC a reasonable demand for small-scale selling like this, I expect this restriction will remain in the foreseeable future.