Just found this awesome forum after shopping for som flashlights. I live in Norway with long dark winter nights and I’ve used some old cheap bulb-flashlights until recently when I found a Nightcore HC-60 and discovered how nice these 18650 led lights could be.
I have now placed an order for Emisar D4, Convoy S2 (+ diffusor for lantern usage at power drop) and a Astrolux MF02S. I totally lost it for cool flashlights so even now without any of these in my hand due to slow shipping I looking at new ones… Just discovered this D4S and regret that I didn’t get that instead of the D4… Is it a big difference so I need both? Might be the wrong place to ask such a question
The HP48 calculator series was particularly interesting. In addition to the usual RPN stuff, the visual graphing stuff, and the symbolic formula manipulation, what made it really special was that it had a hierarchic filesystem. Users could store and organize arbitrary files, create their own library of functions and scripts, even create entirely new software for it to add applications or completely change how the calculator worked. And it had an active community building and sharing neat new things for it.
The main drawbacks were that it was fairly slow and connecting it to a computer was inconvenient. It was no worse about these things than other products at the time, but it sure could have benefited from a faster processor and a USB port.
I need to get some 26650s for the incoming D4S, ideally bought in the UK
I cannot find a UK seller for the LiitoKala 5000mAh 26650 cell (I don’t count un-recommended sellers from e-bay or amazon), but I can find UK sites I would be willing to buy 26650s from, for:
I understand the mAh (bigger is better, if all else is equal I believe)
But I don’t understand the Amp requirement for a D4S, and the description for the above cells (e.g. (20A/ 75A)
Would anyone be able to recommend some cells? I presume I’m going for unprotected flat tops.
FWIW, even with the D4S’s increased thermal mass, turbo is still meant for relatively brief use. Higher-mAh cells work better at the lower, saner levels where the light will most likely spend most of its time. It can, for example, make the difference between 12 hours of runtime and 16 hours of runtime.
Keepower are normally pretty decent. I’ve not heard about this 6000 mAh version before, never-mind the protection circuitry which I would usually avoid, but it might be worth a look.
I installed RealCalc and a few others back in 2011 or 2012, but I haven’t used any of them in years. Mostly I just use python’s CLI as a calculator now. Anything without a programming language built in hardly seems worthwhile any more.
The D4S is bigger. That means longer run times and a somewhat longer time on Turbo before the light ramps down. It has the aux lights which are both cool and useful.
Most of all, it comes in green. Green is the best colour for a flashlight ever.
You need both. Better order that green one now before they are out of stock
(Seriously of course you do not need both. Save your money. oh and don’t tell anyone I said that)