new to tp4056

camthecam

camthecam

Member
Joined
Oct 15, 2018
Messages
160
just got delivery of tp4056's. seem to have a short across the inputs. Any suggestions? Am I missing something? I've desoldered them all and and tested each one with alligator clipseven tried a phone charger but no joy. Fake/Dodgy (board/me)?


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cheers in advance.
 
I would defiantly say that you have clones or fakes but why they dont work is another question here are pictures of genuine ones and they dont have TP4056 written all over them. If you orderd from Ali remember cheaper is not always better. I also tend to buy them on cards of 10.

Wolf

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Wattwenger, even yours are clones. The real ones have the TP logo on the IC.


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However, since "most" of these are built in Shin-gen, they all share products with each other.
 
Korishan said:
Wattwenger, even yours are clones. The real ones have the TP logo on the IC.


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However, since "most" of these are built in Shin-gen, they all share products with each other.
Click to expand...


Hmm OK I see, question is where would you get the authentic ones?

The ones I have seem to work just fine I will check them closer when I get home tonight as I still have a bunch of them I have not used from different vendors also.
 
Most of the clones are fine. As I stated, Shenzen manufacturers share their tech with each other. That's why there is so many clones of everything else coming from there.

The problem comes in when Hong Kong or others do the cloning and don't get the schematics right. You can tell if the TP doesn't charge fully, or drastically overshoots. Some fakes will only charge to 4.1V, others will charge to 4.3V. These are outside the spec range of 1% of the originals.

So really, the only way to make sure you get good ones, is to test them. See what their ranges are. If you have some that are out of spec, then you can either buy more, or you can try and return/refund and tell the seller they are operating out of spec.

There are a few members here who have painstakingly filtered through their TP boards to get as consistent charge results. I think rev0 (jkenny, justin), is one of them. Mazlem might be another, though don't remember. They've made sure that the TP's charge to a consistent voltage, then they can accurately discharge test because all cells started at the exact same top voltage.
 
Whoa! Think I might go back to my nail board and my cc/cv power supply. Buying stuff from China is quite hit and miss. When its good, it is fantastic. I appreciate all the info. Im up to 120 cells so still a while to go.
 
Dont give up yet I just got 4 TP5100 boardsand will set them up on a 4 cell holder and see what they are made of.
Report for that will come as soon as I get this together and test.


Wolf
 
camthecam said:
Whoa! Think I might go back to my nail board and my cc/cv power supply. Buying stuff from China is quite hit and miss. When its good, it is fantastic. I appreciate all the info. Im up to 120 cells so still a while to go.
Click to expand...

Mind you the delivery packet is from Thailand. I contacted Bangers and they said tosend a video. So who knows...
 
Banggood requires a video of the issue on their end. I have had an issue with a charging board which they refunded once the video was sent.

I have all TP4056 boards from Banggood and most only charge to 4.15-4.17 which doesnt bother me much as the Lii-500 that i use for discharge tests takes care of the rest. I dont know who picky these are with input voltage, but that might also be the cause some of the low voltage issues since my power supply doesnt handle the power output all that well.
 
They offered me points. I was powering from lab supply. Gone back to holders in parallel powered from lab supply....
 
Wolf said:
WolfDont give up yet I just got 4 TP5100 boardsand will set them up on a 4 cell holder and see what they are made of.
Report for that will come as soon as I get this together and test.


Wolf
Click to expand...

Well I got my 4 TP5100 boards from Ali-NoExpress

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and soldered them to one of the PCBboards from Siedelhttps://blog.seidel-philipp.de/download/diy-project-reverse-protected-18650-lithium-ion-charging-unit/
I will take pictures soon to show.
The experience was interesting.
So I power up the board with the 4 TP5100 on it with 12Vand the first thig that happened was one of the TP5100 smoked. OK great I still got 3 to evaluate.
So I loaded up the 3 good holders and proceeded to watch it charge the 3 batteries. Voltage seemed to be acceptable at right around 4.18 to 4.2 V and all was good. I disconnected the power to the main board with the batteries still in it because I wanted to move the board to a better placeand that was ok.
Reconnected the board to 12V and about 2 seconds later 2 other TP5100s went up in smoke. So now I am left with 1 I disconnected the power and sent an email to zuzzug about this problem.
In the mean time I have ordered 5 more from Bangbad which according to the picture has a true TP chip on it. Lets see what becomes of this experiment.

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Wolf
 
Wolf said:
Wolf said:
WolfDont give up yet I just got 4 TP5100 boardsand will set them up on a 4 cell holder and see what they are made of.
Report for that will come as soon as I get this together and test.


Wolf
Click to expand...

Well I got my 4 TP5100 boards from Ali-NoExpress

and soldered them to one of the PCBboards from Siedelhttps://blog.seidel-philipp.de/download/diy-project-reverse-protected-18650-lithium-ion-charging-unit/
I will take pictures soon to show.
The experience was interesting.
So I power up the board with the 4 TP5100 on it with 12Vand the first thig that happened was one of the TP5100 smoked. OK great I still got 3 to evaluate.
So I loaded up the 3 good holders and proceeded to watch it charge the 3 batteries. Voltage seemed to be acceptable at right around 4.18 to 4.2 V and all was good. I disconnected the power to the main board with the batteries still in it because I wanted to move the board to a better placeand that was ok.
Reconnected the board to 12V and about 2 seconds later 2 other TP5100s went up in smoke. So now I am left with 1 I disconnected the power and sent an email to zuzzug about this problem.
In the mean time I have ordered 5 more from Bangbad which according to the picture has a true TP chip on it. Lets see what becomes of this experiment.

Wolf
Click to expand...

What part of the board burned? Was it from a faulty IC? Or was it from a stray solder blob shorting something out?
 
Geek said:
Wolf said:
Wolf said:
WolfDont give up yet I just got 4 TP5100 boardsand will set them up on a 4 cell holder and see what they are made of.
Report for that will come as soon as I get this together and test.


Wolf
Click to expand...

Well I got my 4 TP5100 boards from Ali-NoExpress

and soldered them to one of the PCBboards from Siedelhttps://blog.seidel-philipp.de/download/diy-project-reverse-protected-18650-lithium-ion-charging-unit/
I will take pictures soon to show.
The experience was interesting.
So I power up the board with the 4 TP5100 on it with 12Vand the first thig that happened was one of the TP5100 smoked. OK great I still got 3 to evaluate.
So I loaded up the 3 good holders and proceeded to watch it charge the 3 batteries. Voltage seemed to be acceptable at right around 4.18 to 4.2 V and all was good. I disconnected the power to the main board with the batteries still in it because I wanted to move the board to a better placeand that was ok.
Reconnected the board to 12V and about 2 seconds later 2 other TP5100s went up in smoke. So now I am left with 1 I disconnected the power and sent an email to zuzzug about this problem.
In the mean time I have ordered 5 more from Bangbad which according to the picture has a true TP chip on it. Lets see what becomes of this experiment.

Wolf
Click to expand...

What part of the board burned? Was it from a faulty IC? Or was it from a stray solder blob shorting something out?
Click to expand...
OH the IC let the smoke out and now they have a nice little hole in them.
 
Steam engine.....
 
Sorry to hear. I ordered a zb206 to try all my batts with the IR check. So thanks you guys! Ill let you know. I found about a KWh of batts in a cupboard at a mates work so might start with those.
 
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