Review / Measurement: Charger module with TP4056 controller

Yes they can. But it should be powered by only one usb power supply. Two power supplies might not play well together.

Sweet! That’s great news. Now I just need to find a source for the genuine article.

I thought I ordered this one months ago but apparently not. I have no idea if its genuine or not but the picture has the correct symbol on it and its not cheap.

http://aud.dx.com/product/tp4056-1a-li-ion-battery-charging-module-blue-4v-8v-961215797#.Vhh5rfmqpBd

I have some i got off ebay a while ago but I put them aside as soon as I saw they didn’t have the right symbol. I just took them out for a quick test. Other than termination voltage, what else can I test for to see if they’re usable? Or would I be better off just getting some new ones from Richard?

Current at beginning and at a couple points near the end.
And checking that current is zero when the done led lights up.

But still, I’ve seen someone report that their 4056 clone randomly started overcharging even tho it was originally fine.

I’ve tested mine and both stop reliably around 4.195v.

Next question: with a different resistor, can these be run at 1.2amp?

They should already be set to the max. How much current are you getting?

It’s set for 1amp and that’s about what I’m getting. I just didn’t know if it was possible to “set” it for a little more like we do with drivers that use sense resistors

1A is probably already the max. The original chip that HKJ tested did 850ma. What value set resistor is on your boards?

on the datasheet it says the max rated is 1200ma (if I’m reading that right) but only offers configuration directions for 1000ma. I might see what a 1k resistor does…

It would be nice to have a slightly different layout with room for a multi position switch and indicator diodes for a few other output currents.

I’m not making a new PCB (though I might in the future) but im currently piecing together a little charger that uses 2 of these boards in parallel. My hope is to have one at 800ma and one at 1200ma. I’ll have a switch to toggle if I’m just using one board or both. 800ma for 14500’s and 18350’s, 2amps for 18650’s.

I am wondering if it will charge ML Battery Chemistry (3V)? or do I need to change some value? Thanks for help

The voltage is hard coded into the chip and cannot be changed.

Thanks HKJ, is there any suggestion for ML2032 battery charger?

Hm, almost no one connects NTC to these TP4056 boards (NTC placed in/on cells itself) to get thermal protection for free.

TP4056 datasheet:
“TEMP (Pin 1) :Temperature Sense Input Connecting TEMP pin to NTC thermistor’s output in
Lithium ion battery pack. If TEMP pin’s voltage is below 45% or above 80% of supply voltage VIN
for more than 0.15S, this means that battery’s temperature is too high or too low, charging is
suspended. The temperature sense function can be disabled by grounding the TEMP pin. ”

Is that in-parallel dual engined charger working nicely?
I’ve sometimes wondered if these boards could be used in parallel without the risk of one of them banging some @#$% volts on the other… :DRUNK:

Cheers

4056 is also good, is not very accurate cut-off voltage

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Heatsink the chip if you do

According to reviews, around 850mA of charging current were delivered with 1’2K resistors.
I bet you’ll (probably) get slightly above 1A with a 1K one.
Boards are @#$% cheap, I’m waiting for two of them (with protection) with have costed me $1’17, and I’ve seen even cheaper… O:-)
Slam a BIG heatsink over the chip, use a 500Ω resistor and… please report! :sunglasses:

Cheers