LiitoKala Lii-S1, successor of the revered Lii-100

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Barkuti
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LiitoKala Lii-S1, successor of the revered Lii-100

Features cell polarity detection and does away with the powerbank function. 

http://www.liitokala.com.cn/productView.asp?id=474

AliExpress search: https://www.aliexpress.com/wholesale?SearchText=lii-s1

Price seems cooked right now. 

 

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XXX-Man
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Interesting Smile

I already modded my lii-100’s with voltmeters so I will wait for price drop.

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Barkuti
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From what I see in the picture it displays current. We'll see if this is just a cosmetic current  selection indicator or an actual converted current shunt voltage drop reading  (displayed value would progressively drop after entering CV charging phase).

 

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XXX-Man
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I missed that.
If it’s real value it would be great.

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Thanks for the heads-up Barkutti, seems pretty nice and “ergonomic” Wink

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We need a comprehensive review.

Barkuti
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Lii-S1 spotted at Banggood Bangbad. I do not really want to judge but hell with the $9.99 jacked up pricing, in AliExpress I see it for $7.99 with fast and trackable shipping. 

 

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will34
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I’m sure the current display is not a real reading, that feature alone would cost the same as the charger tiself

lmns
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Well I don’t know, but the Opus BT-C100 has a decreasing current in the CV phase on the display. It costs like $3 more.

If the end voltage is a bit lower than with the Lii-100, we might have a new winner. I like the build quality of the Lii-100 much more than any Opus or Xtar charger. The springs are smooth and it can charge NiMHs just fine. The cell polarity detection sounds like a nice feature as well.

Personally, I wouldn’t mind paying ~$10 if it’s an overall better successor to the Lii-100.

hIKARInoob
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Nothing beats a $0.99 original Lii-100. Big Smile

FPV
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thanks for highlighting this product! very interesting evolution of a beloved charger.
Price is crazy, obviously, guess we have to wait for a flash sale or code. 4.99-5.99 would be a good price point.

Spiderlight
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Looks good would be great if the too high charging voltage of the Lii100 is fixed.

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hIKARInoob wrote:
Nothing beats a $0.99 original Lii-100. Big Smile

I think the same actually.
Both will charge the battery and then finish charging and this is it.

But if one needs some more diagnostic, etc… there are the others, more capable but still cheap ($12 – $15) chargers like 2-bay Lii-300 or 4-bay Lii-500.

kuoh
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Well, nothing beats the price. It’s definitely a great travel size charger and the price wouldn’t cause me grief if it were forgotten or lost. That’s not the case with the S1 at current prices.

KuoH

hIKARInoob wrote:
Nothing beats a $0.99 original Lii-100. Big Smile
Barkuti
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will34 wrote:
I'm sure the current display is not a real reading, that feature alone would cost the same as the charger tiself

Displaying the current value is as easy as reading the sense resistor voltage drop and displaying the corresponding I = Vsense / Rsense value, no big fuzz really. Just matter of a few extra lines of microcontroller code any widespread and cheap multimeter already has. Actual weighted per unit cost: negligible. 

 

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hIKARInoob
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There are really a whole bunch of chargers. What sets the Lii-100 apart from the rest is the occasional stupid low price with code. The display will simply increase cost, so I cannot imagine this charger being as cheap as the original, so it looses its primary advantage.
I really love a voltage display, but to me this is initially of interest if I charge multiple cells at once from one light to check if the cells have discharged evenly. So for a single cell this is of no interest.
Nevertheless, it is a good looking charger, and it still is cheap. Certainly will keep an eye on this one nevertheless. Cool

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hIKARInoob wrote:
I really love a voltage display, but to me this is initially of interest if I charge multiple cells at once from one light to check if the cells have discharged evenly. So for a single cell this is of no interest.

It is if you want to stop charging at, say, 3.6V for storage.

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Finnno
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Barkuti wrote:

will34 wrote:
I’m sure the current display is not a real reading, that feature alone would cost the same as the charger tiself

Displaying the current value is as easy as reading the sense resistor voltage drop and displaying the corresponding I = Vsense / Rsense value, no big fuzz really. Just matter of a few extra lines of microcontroller code any widespread and cheap multimeter already has. Actual weighted per unit cost: negligible. 


 


Cheers Party

…and the cost of display?

Have a doubt it is measured value though, why else show the rounded up value of 0.5A, namely 0.5A?

So, if the display showing either 0.1A or 0.5A is all the benefit, then…

Voltage reading I find not as important as amps

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Finnno
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Lightbringer wrote:
hIKARInoob wrote:
I really love a voltage display, but to me this is initially of interest if I charge multiple cells at once from one light to check if the cells have discharged evenly. So for a single cell this is of no interest.

It is if you want to stop charging at, say, 3.6V for storage.

That combined with automatic stopping of charging would make sense, otherwise…

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Finnno
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…yeah, and the power bank thing on Lii-100 tends to stop working in some circumstances anyway

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Barkuti
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Just sent the following email to these fellows:

 

Myself to ShenZhen LiitoKala Power Co. Ltd. (charger factory) wrote:

Hello,

Recently brought up the “LiitoKala Lii-S1, successor of the revered Lii-100” thread on BudgetLightForum.com: http://budgetlightforum.com/node/58803

After the success of the Lii-100 we're thrilled with the Lii-S1. The charger's product page states “Ø Built-in digital tube indicator shows the real-time charging status of voltage and current”, we just want to get confirmation about this so, is the displayed current value actually calculated from the voltage drop at the sense resistor or sort of? If this is so we should witness the constant voltage phase current tapering on the display, right?
Thank you in advance. (^̮^)

Best regards,
Salvador Barqueros Provencio

We'll know soon. 

 

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Pete7874
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Uh… oh… we need a coupon code… a significant one at that. Smile I am not paying more than $2.99 for it.

Pete7874
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Quote:
Features cell polarity detection and does away with the powerbank function.

I don’t see a NiMH display, but the description does mention NiMH support. Weird.
Finnno
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Pete7874 wrote:
Quote:
Features cell polarity detection and does away with the powerbank function.
And also no NiMH support. Sad

So…
Instead of fixing relatively high 100mAh for NiMH they remove support altogether?
Instead of fixing power bank function they remove it?

Instead of that we get (useless?) display

Wow

Hope above proves wrong though Smile

But if it is not, then this is not Lii-100 relacement Smile

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Pete7874
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Finnno wrote:
Pete7874 wrote:
Quote:
Features cell polarity detection and does away with the powerbank function.
And also no NiMH support. Sad

So…
Instead of fixing relatively high 100mAh for NiMH they remove support altogether?


I misread. Description does mention NiMH support, but there appears to be no NiMH indicator light on the display.
Pete7874
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Finnno wrote:
…yeah, and the power bank thing on Lii-100 tends to stop working in some circumstances anyway

My 100B (the one without power bank function) actually does not overcharge cells like the 100 does. I wonder if it’s the power bank circuitry that’s to blame somehow. Maybe this S1 will not overcharge because it has no power bank function?
Barkuti
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The display features indicators for lithium chemistries: this is termination voltage adjustment. There's no charging parameter or algorithm ambiguity for Ni-MH thence no need for an indicator.

The powerbank function may be a bit tricky with the rail and contact resistances getting in the way.

 

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Sure it looks nice, but what’s the use of it?
I just put my cells in a charger and that’s it. I’m not going to watch the numbers on the charger for several hours.
What I would like is time remaining until 100%

Chargers: 1xBasen BD01 5/5,1xDodge Charger, 1x Gyrfalcon All-88, LiitoKala: 3x100 4/5, 2x202 5/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: BLF Q8 4/5, Convoy BD04 5/5, DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Sofirn C01 BLF 3200k/5600k, Zebralight H600Fc 3/5.
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No Ni-mh charging?

Forgot my pen

hIKARInoob
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mrheosuper wrote:
No Ni-mh charging?

Yes there is.

Pete7874 wrote:
Finnno wrote:
…yeah, and the power bank thing on Lii-100 tends to stop working in some circumstances anyway
My 100B (the one without power bank function) actually does not overcharge cells like the 100 does. I wonder if it’s the power bank circuitry that’s to blame somehow. Maybe this S1 will not overcharge because it has no power bank function?

I think they fixed the over charging of the 100. I can’t remember if I’ve tested all three, but at least the one I tested terminates at 4.18V.

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Quote:

I think they fixed the over charging of the 100. I can’t remember if I’ve tested all three, but at least the one I tested terminates at 4.18V.

The one I received last month overcharges.

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