I’ve already burrnt out of idea, but still need to say something 
Improve font,symbol and styling…better dimmer backlight lcd. no seen brighter beam or so… You know when you look at it, you will be amazed by it… ok that it.
No matter how you try to reactivate a cell the chemical reaction starts if the voltage is too low
the build up of the crystals is non reversible
If the cell is then used again it can start develop an internal short anytime, usually under discharge or quick charge
There are enough cell failures of vapors because of over discharged cells, they can literally go off in your pocket or face
The Worst thing that is most likely to happen with flashlights is you are not at home or in your car and that cell starts a fire
Ohhh nice!
Just want to say that the enthusiasm and knowledge of all involved in the discussion of this project is the reason I finally decided to get off my butt and join BLF 
Lookin’ good, BlueSwordM - thank you for all you are doing to make this happen 
Definitely on my bucket list!
OG
@OLd_gUY, thank you.
@Lexel, I agree.
But the internal lithium plating most occurs during normal recharging.
See, at usual voltages, lithium plating can’t occur without extreme discharge currents(massive voltage drop).
However, at low voltages, it can become a problem since the reaction isn’t inhibited by the internal voltage potential.
It’s not an issue when sitting in storage at average temperatures. But, when charging back up at normal current levels, the huge current surge can induce a very short burst of lithium plating crystals, like what happens at high currents with tin whiskers during electroplating.
It’s why I’m planning to make this feature optional: if a cell below a voltage of 2,40V is recognized, you’ll have to proceed with charging manually.
TLDR: I’m listening to JoshK.
the mc3000 charge at a lower rate when a cell is 3 volts or below & you can alter the voltage if you feel the need.
Thanks for PRO knowledge Lexel, much appreciated.
In terms of above pieces of information - does it apply also to cells so called “protected”? Can the PCB mounted inside prevent catching on fire?
No, protection circuits won’t do anything to prevent internal shorts from causing a cell to fail spectacularly. However, they do prevent over-discharge, which is one way those internal shorts can develop. Though, I suspect manufacturing defects to be a bigger issue for most users, and the protection circuit won’t help with that.
Attention should be given to the durability of the slider mechanism. Reading reviews on Amazon for the Opus BT-C3100, I came across a complaint that the sliders were connected with glue. A reviewer of another popular charger (I forget which) said the slider springs were breaking after about a year. If I’m buying a new charger I want it to be long-lived.
Good point. Wonder if it’s feasible to have a sliding rail that isn’t spring loaded. Instead, make the contacts be magnetic? That way there won’t be undue stress against the battery or sliders.
This brings to mind how a file-cabinet drawer’s back plate works. There’s a back plate that slides forward and back manually, with a lock. There is no spring. It keeps your files snug, no matter how loaded the drawer is.
IMO, some tweaks to the MC3000 would do the trick, so SkyRC could be the company to work with.
BTW: I guess you all know the story behind the MC3000? SkyRC built this charger to specifications of a flashlight enthusiast. Sounds like history repeating, somehow.
Great start. I’d also like to see a 2-cell version for greater portability.
I worked out the probability that you’ll see anything from this project, and it turns out it’s only 2.718%.
Still, it’s fun to speculate what could be. IMO, the only thing that stands a chance of getting anywhere close to the requirements is a modified MC3000. Though, that would never get done on the budget requirement of $39-$49.
Group buys (like the recent one for the Xtar Li500S) make a lot more practical sense for a “budget” charger.
The only way a BLF charger would get done is to ask a company like Xtar to make some very minor modifications to an existing charger, and do a group buy. But that will never come close to the requirements for this project.
Finally a realistic view.
That’s a very precise number. Show your math please.
You sound a lot like my elementary school math teachers…
In HS and college science they teach that only the last digit is non-precise. So if I say I have 2.5 gal of gas, it’s understood it could be 2.48 or 2.54. But if you say you have 2.500 gallons of gas, then it’s a fact that it was measured to at least the hundredth of a gallon.
So when you say “I worked out the probability” and the answer is 2.718%… that is fascinating to me.
Perhaps he simply asked Spock to calculate it. 
BlueSwordM, is there news on this project?