SheKor Charger for 18650/17670/18500/17500/14500/16340/

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Yeah, I will eventually play around with that. Have to purchase some wire and soldering equipment first. Stuff I will eventually need anyway if, as seems likely, I someday decide to step up to a hobby charger.
 
I'd be interested in seeing someone do the mod for the spring. If you do, let us know how it ends up going!
 
jcw122 said:
This sound like a very interesting charger, what kind of loss in runtime will these voltages below 4.20v create?
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A graph like this might help , R2 starting at 1.25A . 18650 ..
 
I'm about to expand my Li-Ion "presence", and this looks like a good charger to examine.

I'm especially interested in the solar charger idea also. Has anyone tried this config yet?

Something that could be verified by experiment by one of you using a PSU is the behaviour of this charger when running from a 12V supply that occasionally droops (to simulate clouds passing in front of the sun, or leaving the setup out too long and the sun goes down)...

I'd like to find a NiMH charger that can go solar as well...
 
Meterman said:
Starting at 9V (8V is not sufficient) I tested current and wattage at 12 - 15 - 20 - 24 and 30V. There is no need to write down all the particular figures - current reaches from ~ 300mA to ~ 95mA and the wattage lies around 2.7W, only increasing to 2.9W at 30V.

Charge current was pretty stable from 418 to 422mA. Battery inserted was a Samsung ICR 18650-28A not discharged to total emptiness.

May be this is useful to one or two here. 😗

Wulf
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Ah, this answers most of my questions. Solar panels seem to be easier to find at higher voltages than higher current; since this charger seems to "buck/boost" properly with variable input voltage (instead of just dumping off excess voltage as heat somewhere), something like this might be just enough for off-grid/camping use.
 
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BTW anyone bought one recently and if so how long did KD take to ship it? My one is still order packaging-pending since ordering late Friday, I know less then 5 working days is hardly unusual but all my other stuff have shipped by Tuesday so I'm going to end up with a flashlight, batteries, bike mount (actually two of them, long story), battery cases but no charger 😛

I live in NZ so once they actually ship it should only take 1-2 weeks to arrive. Actually the flashlight and batteries should arrive soonest since they were shipped with tracking.
 
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When I bought mine from KD, I had not signed up for an account and I received no notice of anything, no confirmations, and could not find anything about my order on their website. Nevertheless, the charger was eventually delivered about 2 to 3 weeks after I placed the order.
 
I ordered one from KD on June 26th and received shipping notification on July 6th. It then took another week to arrive in Germany.
 
Tido said:
I ordered one from KD on June 26th and received shipping notification on July 6th. It then took another week to arrive in Germany.
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They do not provide tracking under a certain value. It took slightly under 4 weeks for me to receive my stuff on the east coast of USA.
 
As a personal update I ordered (& paid) mine late Friday, 5:06 PM HKT according to KD. I got the order shipped notice on the next Friday (10:07 AM HKT) so about 1 week or 5 working days between ordering & shipping. Should be about 1 week.

I do have my torch already arrived today (Saturday) but I'm making do without my 18650 for now...
 
So my SheKor arrived today (Friday) a week after being sent. In testing now. My first ever charging of 18650 and no fires so far. My Trustfire black/red flame 2400mAh 18650 are a fairly tight fit. I had to use insulation tape rather then cardboard to seperate the aluminiums foil I'm using for measuring current and I had to use a much thinner layer then I was hoping to :-(
 
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I just used regular paper to separate the foil and found that worked fine. My first Shekor is charging my red/black Trustfire 18650's to 4.11/4.12 volts very reliably (as measured by my cheap DMM) although it takes quite a while for the charge to complete and the LEDs to go out. Very satisfied with the charger. So satisfied I ordered a second unit last week (which hasn't been shipped yet).
 
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Dances with Flashlight said:
Still waiting after five weeks.
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Is that normal for where you live? Or don't have enough experience to say?

I live in Auckland and probably all airmail arrives here so generally 1-2 weeks from when it's actually shipped is the norm for items sent from HK probably closer to 1 week. I did have an item take 2 months! which was sent from Germany bought from eBay just before the first volcanic disruptions. I filed an item not received with eBay on the 44 day, the seller quickly escalated it (I'd planned to wait the 3 weeks before I had to escalate) and about 2 weeks later they lost so I got a refund. Then the next day it was delivered! I repaid them the money of course even if I did lose out because of the currency conversion fees (and rather annoyingly nearly the entire item cost was the shipping fees!)
 
Just got my charger! Charged my 2x AW 17670s from 4.0v to 4.13v. It took about 2 and a half hours to get the light to go out. I'll add that I'm using a $30 charger from Lowe's so voltages could be off a bit. Nevertheless, pretty happy.
 
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