Universal Li-Ion charger

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anduril
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Universal Li-Ion charger

Guess we need a forum for chargers Smile

 

Currently I use this one:

http://www.dealextreme.com/details.dx/sku.13820

Like it very much and as I saw on some japanese page it has a very "healthy" charging characteristic.

 

But now I want to move from 18650 to some other cells, like 10440 or 16340 and the charging current of this one seems to be too much for them.

I would prefer to have one charger for all types of cells.

 

Almost bought this one:

http://www.dealextreme.com/details.dx/sku.12594

But the same japanese page described it as a stupid CV charger, also saying that it takes 13 hours to charge an 18650. Sheesh.

 

Is there anything cheaper than Pila IBC and less clunky than a hobby charger that would fit my needs?

Or should I build one?

Edited by: anduril on 06/23/2010 - 16:45
Don
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Actually, the cheaper hobby chargers aren't that bad. I use one along with a pair of steel rulers and magnets to parallel charge 18650s. Keep meaning to build a balance harness and do it properly. Meanwhile I charge them in parallel. I use this one which works for me.

 

A decent universal charger that did 150mA for 10440s, 300mA CR123s, 400mA for 14500s and 1A for 18650s, even 2A for Ds would be really nice. But what I am describing is a hobby charger.

 

The Ultrafire WF-139 also works for me - though it isn't that quick.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

EvoX
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Hi!

 

 I use the TR-001 (so far without any problem). But, little overcharge my batteries 4,25-4,26V.

2x18650 charging time by me is 6-8 hours. I use this for my 16340, about 2 years and all my batteries works fine....

(Im a lucky guy?!)

 

I found a "new" (for me new) charger on KAI, looks good, but i have no experience with this...

UltraFire WF-188 Universal LiFePo4/Li-ion Battery Charger

http://www.kaidomain.com/ProductDetails.aspx?ProductID=10638

In CPF is a thread from Shekor charger.
They describe is a good charger. No overcharge, but a little undercharge..... so
Somebody describe the undercharge is "good" for little batteries like 10440 etc.
http://www.candlepowerforums.com/vb/showthread.php?t=256177

Sehkor on KAI:

http://www.kaidomain.com/ProductDetails.aspx?ProductId=9650

For me the Pila is not a "Budget" charger.....

(sorry for terrible english)

Don
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Good to have you here.

 

The Pila certainly isn't a budget charger as far as I'm concerned. "Undercharge" is probably a good thing with lithium cells - I choose to stop mine at 4.1V for better cycle life.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

alfreddajero
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I use the HXY for my 18650's and also the newer version of the WF-139.......Just as long as you dont deplete the cells you should be fine when it comes to charging time.  I like the looks of the 188 and it looks like it will charge 16340's without the spacers.

With Darkness, there will always be Light.

 

 

Nil Einne
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I'm interested in a similar thing. Well it'll be my first charger but I've decided I'll prefer a more general charger for li-ion batteries in case I ever go 14500 or whatever.

The Shekor is currently my main choice, the CPF reviews/analysis sounds promising in particular terminating properly (rather then trickle charging that seems so common) and with a decent charging profile (at least as I understand it). They do seem to terminate low and average but as I remarked in the CPF thread I think better to terminate low then terminate high. May be a little high for 10440 however (well KD doesn't even suggest it for them) although from what I read in CPF there aren't many that are much lower. And as it lacks any sort of current selection it'll be slow with the 18650 batteries. This BTW appears (from the translation) to be one of the complaints in this Japanese review http://www.kansai-event.com/kinomayoi/chg/Li_CHG_Wp2.html . I see now the review has already been discussed somewhat in CPF. Another important thing from the review is modding it to reduce the spring resistance should help increase the termination voltage.

Something that does AA as well would be nice but I've been decidely unimpressed with everything I've seen so far in that area (many seem to have the tendency to blow up at 220-240V). But this is the first time I've seen the WF-188 and it looks interesting. Although I don't know if I'd ever use them, being able to charge LiFePo4 would be nice just in case and selecting the charging rate is something that I've been thinking would be good, that way I can charge 18650s resonably fast while not killing 14500s and the like. However haven't seen any reviews, it may be too new and I don't know if I can wait until they come in and I'm reluctant to be a guinea pig particular since I don't really have the equipement to test it anyway (multimeter that can't connect to a computer/log data is all I have). And of course it may be one of those that has a tendency to blow up at 240V.

I'm looking to spend $20 or less so hobby chargers are out of the question.

BTW do you remember the link to whatever Japanese forum or site analysing the OEM 2x18650 charger (aka HXY etc) you mentioned? I found the Japanese review for the Shekor while searching (only then to later find it was already linked on CPF :-P) but can't seem to find the HXY one. Unless you mean the review for the 1 channel variant. It's interesting because on CPF the HXY wasn't so highly rated http://www.candlepowerforums.com/vb/showthread.php?t=229923 although that's partially because of the lack of proper termination.

alfreddajero
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The HXY that i have i bought from shiningbeam, he actually recommended to me.  It does its job and as for the 139 version that i have i have had no problems at all, i charge both protected and unprotected in both chargers with no issues and both cutoff at or around 4.17-4.18 which is good because even though the cells are not fully charged the cells well have a longer lifespan.  And another thing you might want to consider is the cells, what brand and size are you going to be using, because some 14500's and 16340's might be too long for use in your device or light.

With Darkness, there will always be Light.

 

 

juhha
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I use the WF-139 for 18650 and 16340. Tight fight for protected 18650, and have to use a spacer for 16340(protected or not)

For 10440 I use the WF-138. When charging protected 10440 batteries, have to use the 14500 slot with an extender. Unprotected cells fit just fine in the 10440 slots.

Ain't for sure a universal charger(2... lol), but an adviced purchase on CPF.

Never had a problem with these chargers.

alfreddajero
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You might want to just set your eyes on two chargers, you already have one for 18650's and just get one that will charge the rest of the size formats.

With Darkness, there will always be Light.

 

 

EvoX
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anduril
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And some others, including Shekor, here:

http://www.kansai-event.com/kinomayoi/chg/Li_CHG_Wp2.html

 

Thanks guys, seems that I have a choice - buying a low current charger to charge 10440s and 16340s or trading for a Shekor.

Question is if the charging current of 400mA is not too big for a 10440 (seems to be 400mA from the graph in the Shekor thread).

 

EDIT:

OK, read the thread till the end and it seems that 400mA is not that bad for 10440.

Also read the japanese description of Sekor charger and it seems it's possible to limit the current by swapping a resistor... I will check when it arrives Smile

znmzdx
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My shop on aliexpress , welcome to visit my shop !

alfreddajero
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Cool let us know how you like it.......would be nice to get another charger to add to my stable. 

http://budgetlightforum.cz.cc/node/13

 

With Darkness, there will always be Light.

 

 

Nil Einne
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EvoX wrote:

You looking maybe this link?!:

http://www.kansai-event.com/kinomayoi/chg/Li_CHG_W.html

 

Yeah that's the one I noticed but wasn't sure if it was the right thing as they are testing the 1 cell version not the two cell version. They do comment on the 2 cell version and if I understand the automatic translation correctly I think they are saying it may have a different charging profile from the 1 cell version. More importantly perhaps while I've seen several reports the 2 cell HXY does charge with CC/CV so it appears they did at one time, from reports on DX, CPF and even possibly the Japanese site (they say something about the charging current of the 2009 HXY being different although don't comment on the profile, that's the 1 cell version of course), it appears recent batches have been more dubious testings suggests they don't use CC/CV and some don't even appear to terminate properly.

 

Haven't yet seen any shots of the internals which may provide a clue why. One explaination would be they changed design to skimp on the quality or perhaps they are using some cheaper ICs which are poorly made but since HXY actually have a website, I wonder whether some of the recent batches are clones and not even made by HXY. Of course it could even be poor build quality or some other design changes leading to resistance and other such problems like with the Shekor which stop it charging properly even though the components are capable and you could correct it manually. At least it doesn't seem to die at 220-240V like some of the other ones though.

 

So yeah after a brief flirtation with the HXY I'm back with the Shekor I think. As I remarked in CPF if I understand the Japanese site correctly if you correct for the spring resistance defect it has a decent CC/CV profile (well at least the one they tested did).

alfreddajero
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Shiningbeam is an authorized dealer of the HXY.......he buys direct which is good so you already know that your not getting a copy.  Just as long as you dont run your cells completely dry you should be good, with lithium unprotected you should not drain them to the point where the the light shuts off, bad for the cell.

With Darkness, there will always be Light.

 

 

Nil Einne
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alfreddajero wrote:

Shiningbeam is an authorized dealer of the HXY.......he buys direct which is good so you already know that your not getting a copy.  Just as long as you dont run your cells completely dry you should be good, with lithium unprotected you should not drain them to the point where the the light shuts off, bad for the cell.

 

Yeah but SB is in the US so it's expensive (for me) due to shipping. And I haven't really seen enough evidence either way that the recent HXYs on DX and other places are crap because they are copies so the SB ones may show the flaws of the recent DX etc HXY as well

alfreddajero
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Yes your right about that though, cosidering i dont have one from DX so i really cant compare.  If you really want CC/CV then you might want to look at a Pila or hobby charger.  The chargers that i have, i have been pleased with- i guess when i encounter a problem then i will just pull out my Duratrax charger and just start using that.

With Darkness, there will always be Light.

 

 

fishinfool
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What kind of Duratrax charger do you have? 

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

alfreddajero
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I have this one buddy...... http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXTCK1&P=ML too big for my charging station though.

With Darkness, there will always be Light.

 

 

alfreddajero
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Nice to have an RC racing background, know what you want and get.  This charger does not need a PS like all the others that are out there so it makes it simple to use when it comes to charging packs.

With Darkness, there will always be Light.

 

 

fishinfool
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I just watched the video and it's a pretty cool charger for nimh and nicad's.

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

alfreddajero
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Yes it is man......what i like about it i can charge a pack at 1.5-2amps and my batt pack just gets warm, unlike the superbrain which misses termination a lot, still not a bad charger since its old just like me. lol

With Darkness, there will always be Light.

 

 

fishinfool
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Well old just means that they are made better and tougher than these newer ones.

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

alfreddajero
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Nope, old is old...lol.

With Darkness, there will always be Light.

 

 

Nil Einne
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I'm not that desperate for CC/CV that I'm willing to pay for the Pila or a hobby charger but would prefer something close. Since some of the HXY were evidentally CC/CV I got interested for a while but based on my research it doesn't sound promising I'll get one which does do CC/CV so I'll probably just stick with the Shekor which seems to be close, particularly if you do the spring mod (well these ones could change too but the reports are from fairly recent batches and from KD ones so it looks more promising, what happens with next years batch probably won't matter to me). Hopefully I don't regret the 9 hours or so wait Wink

 

Of course knowing my luck a few days after mine has shipped whatever I end up getting I'll read a report that the WF-188 is a super charger which does CC/CV for li-ion and LiFePO4 and with an excellent NiMH charging profile as well Silly

 

Anyway your hobby charger isn't old, it's a 'senior citizen'

alfreddajero
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Now that was a good one......yes your right about the chargers....i kind of like the 188, and for the price you might want to get one as well.

With Darkness, there will always be Light.

 

 

Nil Einne
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I don't know if I was the only one but I was thinking the WF-188 does NiMH like some others because it mentions AA. Looking more closely it clearly does not, no mention of 1.2V or NiMH or anything. I guess by AA they mean 10450 and by D they mean 32600. Ooops Silly

 

Some better pictures here which actually show the switches properly http://www.szwholesale.com/ultrafire-rapid-charger-32v37v-lithium-batter... (I could only make out one switch in the KD pictures)

how2
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Hi anduril

Why don't you try the ultrafire WF-188, only cost $17.92  or $15.05 does all batteries

 

AA,CR123A,16340,18500,18650,25500,32600 D type,etc.

 

http://www.qualitychinagoods.com/ultrafire-rapid-charger-32v37v-lithium-...

http://www.kaidomain.com/ProductDetails.aspx?ProductId=10638

alfreddajero
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By AA there referring to 14500's and similar size cells, in the description it says that it cannot charge 18650's flattops i wonder why because when you look a the chargers postive side it seems to protrude.

With Darkness, there will always be Light.

 

 

Nothing
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Thanks to everyone for posting all the information and links.

Just about to step up to Li-Ions and buy some 18650s, 14500s and 16340s, will probably go for the Trustfire Flames just now and maybe AWs later.
Have also just split an old laptop battery and found 9 17670s.
My 2 top charger choices are the Shekor and Ultrafire WF-188, leaning to the latter due to features and shorter 18650 charge time if I understand correctly.
I might just wait a bit to see if someone posts a review of the WF-188 and to give time for more stores to stock it so the price stabilises.

 

Cheers,

Gary

alfreddajero
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Dang if you lived in the states i would love to trade you a couple of 18650 sanyos for one of those.

With Darkness, there will always be Light.

 

 

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