Review / Measurement: Charger module with TP4056 controller

found what appears to be genuine tp4056, received items and they visually appear to be genuine

http://robotdyn.com/tp4056-li-ion-battery-charger-with-protection.html

nice find, have you got this eventually?
is it really genuine tp4056?

What makes those (http://robotdyn.com/tp4056-li-ion-battery-charger-with-protection.html) “genuine”?

What you call “fake” modules only may have a potential issue which is too high charging voltage. However, at these prices…

… just measure their no load output voltage and discard any sinners, imho.

Cheers ^:)

im not sure tbh
what i do know is mine (the tp4056 chip) are getting really hot while charging, you cant tuch it for more then 1 sec,
the chip itself is a mosfet with some other hard coded functions in to it,
i dont know but i think that a cheap mosfet would overhit more then a good mosfet.
other then that, yea they working good, how good? no ones know lol

im useing few of them on few differetn applications, few for 18650 chargers, one for my 10440 charger, one build in to my headlamp wich have 2 X 18650 inside.
so far they work well, i have a small heatsink on top of the tp4056 chip but it still get very hot,
the thing that worries me the most is if it will fail some day and will overcharge the batterys and then fire! lol

oh and BTW, all of my boards are showing about 4.5V output , no load… but still while charging they all cuting off at about 4.18V so im not sure how good this test is, i bet the chip need to have some resistance in order to activate its volt limit function

That is weird. I said what I said because in a cheap flashlight with USB micro-B charging (gotten via GearBest, though) I once noticed a no-load maximum charging voltage of ≈4.46V, and got a full refund. Of course I already knew the no-load maximum voltage on these TP4057 charging powered torches was ≈4.2V. Got a few TP4057 chips and repaired the thing at a later date. Seems the quality control on these is iffy.

Cheers ^:)

Quick update. :-)

Just found a new, compact version of these charger boards:

^:)

Are these little TP4506 circuits still the most compact design for usb charging a decade onwards? I’m looking to add usb C charging to a light and reckon I could just take one of these boards and wire a USB C port to it Looking at these with 6 pin connectors

TP4056 boards were long ago fitted with type-C connectors, check this search Sunnysunsun (example1, example2, example3…).

I’m looking to put USB-C into the SP40, the little micro usb cavity looks big enough for a usb-c port but the space inside is very limited. See TomE’s photo’s Sofirn SP40 Headlamp - #92 by Tom_E . I need a very small 90 degree option