10440 Li-Ion's ...Where to get RELIABLE charger ??

TooManyGizmos

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I just ordered a $15.00 Ultrafire WF-138 charger (item i.d. UFCHGAAA) for AAA/AA Li-Ion's (10440's)

It arrived defective out of the box.

Anyone know where to get a reliable Li-Ion 10440 charger these days ?

I bought from a well known respectable USA E-tailer we all use,but the supply seems to have no Q.C.
The single cell NANO chargers are said to be no longer available.
I want to buy in U.S.A. in case another return is required , but we don't seem to have any good sources !

what to do ...................... what to do .........
these new lights are no good without a charger !
.
 
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TooManyGizmos

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

Just FYI

I also ordered Ultrafire 10440 batteries from LightHound and found out the positive button it has ..... does NOT protrude beyond the wrapping on the end of the battery. So what good is the button on it ??

So I'm betting it won't work in an LF2XT which has a polarity protection ring on the PCB.

That was all a total waste

.
 

boomhauer

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

I have the aforementioned WF-138 (for 14500/10440) and am very happy with it so far. Might be worth contacting the dealer for replacement, unless you're totally turned off by the unit you received. Not much out there, granted.
 

spencer

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

This would be a very viable option. That is if your not scared of it. If you are then I got nothing else.
 

jar3ds

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

i have two nano's and they are the bomb...
 

wapkil

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

This would be a very viable option. That is if your not scared of it. If you are then I got nothing else.

A much simpler IC could also be used, like e.g. the one described here. I used the MCP73861 because I liked its more advanced functionality (higher current, thermistor input, ability to select between 4.1V and 4.2V termination, etc.) but any other IC should work.
 

Illum

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

the nano might be worth looking into...retrofitting chargers designed for 17670/18650 poses a risk of injecting too high of a charge current for 10440s at the same voltage
 

TooManyGizmos

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

the nano might be worth looking into...retrofitting chargers designed for 17670/18650 poses a risk of injecting too high of a charge current for 10440s at the same voltage
..................................................................

The NANO Li-Ion AAA/AA charger might well be worth looking into as you say ................

But I can't seem to find a place to buy it right now.

Who can suggest a retailer with quantity in stock ?


I'm also not sure we can believe the 500Ma rating on the UltraFire's ...........

So that leaves me wondering what charging current is appropriate. I would personally prefer no more than 350Ma charging.

.
 

TooManyGizmos

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

I have the aforementioned WF-138 (for 14500/10440) and am very happy with it so far. Might be worth contacting the dealer for replacement, unless you're totally turned off by the unit you received. Not much out there, granted.
................................................................

Yes ...... I did contact the seller the day I got it .
And they did resolve it that day , quickly and professionally, as I knew they would.

They sent me a new one right away with a pre-paid return envelope for the bad charger.
I can't ask for better service than that .... that's why I buy from them.

My complaint is not with the seller ................
It is with their supplier providing inconsistant goods.

It just tells me a lot about a product when I get it D.O.A. out of the box , which honestly is about what I was expecting.

I just wish the seller would try to find a better and higher quality product. I'll see how the second one goes. But I'm hoping we can eventually get a better 10440 charger.

It won't happen unless we all ask for it and expect better quality/safe products for our money.

TMG:tinfoil:
 

DM51

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

The rate of charge for a 10440 should not exceed 1C, which is 320mA. Until a source for the Nanocharger or a satisfactory alternative is found, a solution would be to charge two cells hooked up in parallel, using just 1 bay of a standard Li-Ion charger. 2x 10440 in parallel would be 640mA, so it would be safe to charge them that way using any charger that was safe for charging a RCR123.
 

TooManyGizmos

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lovecpf
Thank you for that good tip ............ DM51




:welcome:.............................................:oops::sick2:



well......... there's not a * Thanks for being here * ..... sign.

there should be
 

Illum

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

a solution would be to charge two cells hooked up in parallel

neat...an aforementioned issue is that a resistor cannot be paired in series with the cell or the charge will be partial...but changing any cells in parallel without current limiting protection runs the risk of severe cell imbalances.

hm... :thinking:
Lighthound once carried them...now from the looks of it only the RCR123A version remained:ohgeez:
 

KuKu427

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For me it's not really a question of where... it's more a question of what is a good reliable 10440/10450 charger?
If someone can point me in the right direction, I can try to make sure members here can have a steady supply.

P.S. I know about the Nano Chargers and I can't find anymore. I am keeping the last one I have for personal use.:crackup:
 

Illum

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well the thing is....there's been many threads without conclusive results of what is a good charger, it often comes down to what available resources we have in chargers to choose out from.

for 16340 to 18650 many would suggest the Pila IBC as the best charger available while others beg to differ, very little information trickles down to the 10180/10440/14500 range to offer as a recommendation.
 

KuKu427

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That kinda makes spencer and wapkil's idea more and more viable if they can make some in volume...
 

DM51

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Re: Where to get RELIABLE charger for 10440 Li-Ion's ??

charging any cells in parallel without current limiting protection runs the risk of severe cell imbalances.
The only precaution necessary is to ensure that the state of charge of the cells should be reasonably similar when they are first connected in parallel. The cells will balance themselves as soon as they are connected, and they will then stay in balance throughout the charge.
 

spencer

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That kinda makes spencer and wapkil's idea more and more viable if they can make some in volume...
It is wapkil's idea and his thread I just linked to it.

There really isn't a great way to make these look professional unless you have access to some kind of casing that will hide the electronics and hold the battery. If I made one I would either just go with a single AAA cheapo battery holder, or I would hack it into a charger I already have. Neither way is great if you want to sell these.

Electronics wise this project is easy if you can solder and follow a schematic.
 

NetKidz

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I use a self-made LTC4054 charger for long time, it's very reliable. But DSD case isn't convenient for 10440. I must use a spacer and AAA to AA adapter. May be TrustFire TR001 is a good case for modding.

I also found a NiMH AA/AAA charger recently. I think the case is a good candidate for 14500/10440 charger. :)

USB-NiMH-CHGR01.jpg


USB-NiMH-CHGR02.jpg


The internal space is enough for modding. It comes with a USB power plug. If modded with 5v charging IC, it could plug into USB port for low charging current. It could also use with a wall AC adapter when higher current is needed.

I've ordered some MCP73831, it's similar to LTC4054 but with max 500mA charging current. It's cheaper than LTC4054 and enough for 14500/10440. :D
 

CaNo

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It's funny TMG that people get yelled at for not using the search feature but when they do search and find a topic that they are having problems with and post a reply to it... they are a bad guy too! AHHH!!! you can never win! LOL :welcome: <--- I guess! lol
 
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