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Old 11-13-2011, 06:20 PM   #1
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Default Ultimate cheap charger? Or cheap crappy junk?

The jury is still out, but I've got one of these en route, and the description promises a lot. Here's the nutshell for anyone that wants the quick info:

- After shipping, it comes to about $10
- Charges basically every standard size (10440, 16340, 14500, 18650, etc)
- Charges basically every chemistry (NIMH, NICD, Alkaline Rechargeable, Li-ion, LiFePo4)
- In other words, it supports 1.2V / 1.5V / 3.6V / 4.2V
- Four (4) independent charging channels.
- Works on 110 or 220V wall power
- Ugly as hell

http://www.ebay.ca/itm/ws/eBayISAPI....ht_2970wt_1163
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Old 11-13-2011, 07:16 PM   #2
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

I dont think its ugly unless it works.. its a great deal anyways.. if they say it works on all those modes, it is very useful..
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Old 11-13-2011, 07:19 PM   #3
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Nice find probably the cheapest charger ever. I think its ugly because it is made from recycled materials. Dont forget to review it.

+1 for you find (whenever i can)

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Old 11-13-2011, 07:22 PM   #4
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

its a good idea but i never use nicd or nimh so its not really very helpful to me

one day i think im going to make a charger using one of those high quality rc plane/helicopter chargers. im thinking its the best way to go
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Old 11-13-2011, 09:22 PM   #5
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Nice find.
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Old 11-14-2011, 02:45 PM   #6
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

A little low output current...

And:

"DO NOT PLACE THE WRONG CHARGING MODE,
OR IT WILL CAUSE THE BATTERY LEAKAGE OR BOMB. "
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Old 11-14-2011, 02:52 PM   #7
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Quote:
Originally Posted by MegaTesla View Post
A little low output current...

And:

"DO NOT PLACE THE WRONG CHARGING MODE,
OR IT WILL CAUSE THE BATTERY LEAKAGE OR BOMB. "
I don't think so?

1,200mA for one cell, and it drops to 600, 400, or 300 depending on the number of additional cells you charge. You get 300mA with four cells, which isn't that much lower than the crazy $30+ SYSMAX charger (which I think can do 500mA). Plus, at 1,200 for one cell, it's actually higher output current than the SYSMAX. So it's slightly better when charging one cell, and slightly worse when charging 4.

Also, the "bomb" concern applies to ALL chargers. If you charge a LifePo4 in a li-ion charger, you're in trouble.
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Old 11-14-2011, 02:54 PM   #8
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Remove the electronics from that cheap charger and hook it up to this: HobbyKing R/C Hobby Store : HobbyKing 50watt 5A X-Charger/Balancer (need external power supply)

Fairly cheap solution that is much much better!
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Old 11-14-2011, 02:55 PM   #9
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

I guess I'm just used to charging Lipo packs at 7A
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Old 11-14-2011, 03:01 PM   #10
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Quote:
Originally Posted by MegaTesla View Post
Remove the electronics from that cheap charger and hook it up to this: HobbyKing R/C Hobby Store : HobbyKing 50watt 5A X-Charger/Balancer (need external power supply)

Fairly cheap solution that is much much better!
Admittedly, I don't understand your suggestion. Why would you take the electronics out of one charger, and put it into another charger? (in fact, how would that even work?)
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Old 11-14-2011, 03:48 PM   #11
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Quote:
Originally Posted by rhd View Post
Admittedly, I don't understand your suggestion. Why would you take the electronics out of one charger, and put it into another charger? (in fact, how would that even work?)
I wanted to recommend just an Imax/Accucell charger, but then I realised you would still need a holder for the batteries. I also said "hook it up", I didn't say "put it in"

The Accucell (and clones) are quite cheap and they are great value for money. They are fairly accurate. They allow different cut-off voltages, you can set the current, you can check cell capacity etc..

I've had some of the 220V cheapie Li-Ion chargers and they don't last. The reason is inefficient AC/DC circuits that generates heat and sometimes even pop the smoothing capacitors if left switched on too long. (Happened to one of mine)
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Old 11-14-2011, 11:40 PM   #12
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

I have serious doubts about the quality of this charger. From the description it seems like it charges with a constant voltage, which you can set using a switch. Also it seems to be limited to 1200 mAh divided over however many batteries are inserted.

This may work well for charging a couple of NiCd/NiMH cells if you take them out in time, but i don't think its a good idea to use this on lithiums of either chemistry - especially unprotected ones.
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Old 11-14-2011, 11:58 PM   #13
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Quote:
Originally Posted by Benm View Post
I have serious doubts about the quality of this charger. From the description it seems like it charges with a constant voltage, which you can set using a switch. Also it seems to be limited to 1200 mAh divided over however many batteries are inserted.

This may work well for charging a couple of NiCd/NiMH cells if you take them out in time, but i don't think its a good idea to use this on lithiums of either chemistry - especially unprotected ones.
It says:
"Support Battery Voltage: 1.2V /1.5V/3.6V /4.2V"

How does that imply anything different than:

"Output 4.2V 500Ma"
For - 18650 17670 14500 16340 CR123 TrustFire battery charger - Battery Chargers

"Charger Output: DC 4.2V, 600mAh"
For - TrustFire TrustFire 18650 Li-ion Battery Double Charger with 2 x 2400mAh TF 18650 PCB Batteries, Australia - DinoDirect.com

Or the description attached to pretty much any other charger?
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Last edited by rhd; 11-14-2011 at 11:58 PM.
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Old 11-15-2011, 02:19 AM   #14
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Well, I am not exactly a battery expert, but it is my understanding that different chemistrys of battery must cut off the charging at different amounts of impedance. Charging a battery too quickly at the wrong time can lead to fire.

From what I have heard Li-ion overheat easily when they are low charge and so must be charged slower when practically drained. I believe NiMh batteries are the opposite. I would not user a battery charger that claimed to do both unless it had a switch on it somewhere that allowed you to select type.
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Old 11-15-2011, 02:30 AM   #15
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Quote:
Originally Posted by Ablaze View Post
I would not user a battery charger that claimed to do both unless it had a switch on it somewhere that allowed you to select type.

....which is exactly what this charger has on it
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Old 11-15-2011, 02:43 AM   #16
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Default Re: Ultimate cheap charger? Or cheap crappy junk?

Ahhh.. I see that now. Thanks for the thread rhd. The price is right, however I must complain that this would not go with my decor. In fact, this is ugly enough to make me want to hide it from guests!
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