New TP4056 module with step-up circuit review - Not that great!
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- เผยแพร่เมื่อ 19 พ.ค. 2024
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Powering electronics projects from batteries is always a challenge as there is no easy way to get stable output voltage without adding extra circuitry to them. One such circuit is a step-up converter that can take the voltage from the battery and raise it to usable 5V for a typical microcontroller.
So far, when I wanted to use a battery to power a project, I was using two modules separately, one for charging - TP4056 and another one for stepping up the voltage - MT3608. When I first saw this new module on AliExpress that combines the two, I was really excited so I ordered a bunch of them and I started testing them only to find a major flaw that really prevents me from using them in situations where they need to be left unattended.
Check out the video to see the module in operation, and to also see its flaws.
Tools and materials used in the project:
Charging module with step-up circuit (no protection!): s.click.aliexpress.com/e/_Dcx...
TP4056 charging module (with protection) - s.click.aliexpress.com/e/_DCo...
MT3608 Step-up Module - s.click.aliexpress.com/e/_Dmc...
Mini breadboards - s.click.aliexpress.com/e/_DBl...
High power step-up module: s.click.aliexpress.com/e/_Dl0...
Mini step-up module: s.click.aliexpress.com/e/_DCk...
Multi-voltage step-up board: s.click.aliexpress.com/e/_DEq...
Soldering kit: s.click.aliexpress.com/e/_DFK...
Multimeter: s.click.aliexpress.com/e/_DFh...
Bench power supply: s.click.aliexpress.com/e/_DdS...
RD6006: s.click.aliexpress.com/e/_Dmx...
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![3 Tips for better use of TP4056 [+ bonus]](/img/n.gif)
Thank you for highlighting the lack of protection ! Cheers
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Thoroughly reviewed it, and thanks for sharing, I also saw it somewhere 👍
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The voltage disturbance seen when the screwdriver is in contact with the trimpot is unlikely related to capacitance as the feedback divider is relatively low impedance. What you're seeing is likely erratic contact between potentiometer slider and resistive element when screwdriver pressure is applied. The failure mode for those $0.01 SMD trimpots is slider lifts off the resistive element so hopefully the pot is the grounded resistor in the feedback divider where this failure will drop the regulator output to minimum vs. let it fly to its maximum, potentially damaging whatever is connected to its output.
Yes, that is probably what's happening. I did not reverse engineered the circuit to know if it is grounded or not but let's hope it is 🤞
@@TasteTheCode What if you just stopped shoving down on it with an oversized, heavy screwdriver?
There is such a thing as the right tool for the job and your screwdriver just isn't that. Try a regular flat blade jeweler's screwdriver, which requires practically zero downward force unlike a big phillips.
Sticking a a big lump of metal very near a high impedance, fast switching circuit is bound to cause problems! That is why trim pot screwdrivers are made of plastic!
Yeah, but this is what I had on hand. I'll try better next time. Thanks!
Thanks for the heads up. The problem with the smd pot is that it's just crap. Maybe you could replace it with a decent one.
Yeah, but I got used to them. It's only once that they are adjusted anyway so it is not a big deal.
Hello, can i ask the current draw on idle when the output have no load? thanks before..
Sorry I haven't measured that. I'll try to measure it once I get the chance.
Great information the protection is needed.I have purchased one of these boards and added a protection board to the single 18650 cell.It is one that attaches to the + and negative and the feed out is taken from the centre of the board and soldered to the module you use.This adds shorting out protection and over discharge protection so it looks really good.There are modules that do both jobs but the Voltage output is not variable it's set to either 5v 6v 7.5v 9v 19v 12v but as I require 9v to power a radio it should do the job?
Thanks agian for great upload.Perhaps there is a module like you demonstrate with protection?Does anyone Know it?
Thank you! As far as I'm aware, I could not find one on AliExpress that has the protection on it. For the radio, it should power it without issues.
The problem with this board (and a two board solution such as TP4056 + boost board) is that the maximum current it will deliver is 1Amp (shared between battery and external load). If the battery is getting almost flat and you run with a high load (over 500mA say), it will discharge the battery because the load will start drawing from the low voltage battery and then the battery will go flat until underprotect kicks in.
e.g. We have a project+AC01+protected LiPo. If the LiPo is flat or nearly flat, and we then connect 5V Power AC adaptor - the project load will fully discharge the battery. If however, the LiPo is well charged when we connect the 5V PSU, the battery will slowly fully charge. Even if the battery is fully charged, the charger will not stop while the load is still on. This will keep a constant 4.2V on the battery. The solution is to wire up either two schotty diodes or a MOSFET+diode. See th-cam.com/video/3JxidPLKnqQ/w-d-xo.html and th-cam.com/video/T70mBHeIOZA/w-d-xo.html.
OK, that is an interesting case. In my applications, the load is usually very small.
You are misusing it. This is not meant to be a power supply for the device, just a charging and protection circuit for a charged battery to power the device. There is no problem with the board, rather it is what it is designed to be, not magically whatever you wish it was instead.
However your argument is in error either way. If you are giving it a 1A (USB?) 5V input, and the load is taking 1A or less, you are not discharging the battery at all. IIRC, someone even covered this in a video, maybe it was Big Clive? Yes I think it might have been and he even pointed out the reason for misunderstandings such as the one you mentioned, something about not realizing that it charges at a lower rate till the battery gets up to (3.0V?) some voltage.
You can buy lithium-ion batteries with built-in protection, or add a small in-line protection module module to an unprotected 18650 for example. You just have to make sure that your battery holder can accommodate the sometimes slightly longer battery.
I would have liked to have seen how the output of the module varies with load, perhaps up to about 1A at 5V. Also it would be good to see what noise is present on the output.
That kind of information is usually crucial to whether a module is suitable for a particular application.
Hey Rex, thanks for the suggestions. I agree but this is the limit of what I can do right now with the equipment that I have.
For your last demo, can't we use BMS protection circuit fir lithium batteries?
Yes you can. You can also use batteries with protection built in but you need to be aware of the issue.
Hi, i have a protected battery and need to power low amp diodes. I can only charge the battery with 400ma max, is there any resistor on the board to limit the amp output ?
Hey, yes there is. I have a separate video on that th-cam.com/video/qCFdlcmdSMs/w-d-xo.html
Interesting review, as you say it's a shame the module doesn't meet the minimum requirement for battery protection. It is good that you highlighted the problem caused by your natural capacitance when adjusting the output voltage.
Thanks!
To overcome that shortcoming, would it be safe if I added the BMS 1S module? Because BMS 1S can cut off the current if the battery reaches 2.7V
Yes, that can be done and also there are now modules with built in protection.
Do you have a link to the module with battery protection included?
@@javeza2008 you can try this one s.click.aliexpress.com/e/_DEJFmTJ It has a chip marked as WKE1K that I think does the protection but I haven't tried this one inparticular myself.
can it be used with batteries which include protection themselves?
Yes, if the battery is protected than this module is perfect!
I got this modules few days ago. The batt drained out too bad, then cant be charged. So i contact the supplier, they said it should secured with bms module to avoid batt over discharged
Yeah, the battery needs to have it's own protection module separate from this.
That is a much safer option.
En la descripción del producto de aliexpress en rojo dice que si tu bateria no tiene modulo de protección debes comprar el modulo con protección incluida. Entoces este modulo del video se puede usar para baterias de celular pero no para baterias 18650 que no traen modulo de protección. Muchas gracias por el video amigo.
You are welcomed! In my case, at least in my listing that was not stated. Maybe they changed it since because of complains.
The new Type C variant is out and it has both overcharge and over discharge protection. I bought 3 of them and they are very cheap. 325 Taka (around $3) with delivery charge.
Nice, I haven't looked at them yet but I'll order some to explore. Thanks!
@@TasteTheCode Thanks for replying. So, I did some testing and the protection IC they used is named MKG2H. It cuts the voltage when battery reaches 2.5V.
OK, that seems to come out as RY2201. Interesting looking little chip. Definitely worth the check, thanks!
Which ic replace with b6283c on this module please make a video on it
Hey there, I do not own such a module, can you please share an example?
im sure a fixed version will be on sale soon, at least i hope so
I hope for the same! That will be really versatile and useful.
I don't see those as problems. But it's output voltage comes with lot of noise, like it is impossible to use in certain circuits. I used it to power a meter but meter is not working due to its noise.
A meter is best powered directly from a battery. The are extremely susceptible to noise.
Maybe it jumps the voltage because you use a screwdriver with a magnet
I tried with different ones it was the same. It reacts on the pressure applied.
Berapa ampere max yang bisa dikeluarkan bila menggunakan battery
Usually 1A with the TP4056.
Yikes, a nasty bit of kit, thanks for the heads-up
You are welcome! Keep in mind that you can still use this module if you have batteries with built in protection.
I'm not understanding why you are disappointed with the module. It appears to be functioning within specs.
Your complaints:
1) Doesn't have a lot of current draw..... DUH.. you're converting current to voltage in a boost circuit from a single cell. Also.. Nowhere in the datasheet for the SDB628 IC does it say there is a maximum current. The only listed current information is it's quiescent (standby) current dissipation which is 200uA - 2.2mA. however, you're max current on that board is going be around 1A as the design of it is limited.
That being said, i sure hope you not expecting to jump-start a vehicle using this tiny little boost circuit anyway, so if needing more than a an amp is a concern for you, than of coarse a little $1 charge/boost module isn't going to cut it.
2) When i bridge contacts in a metal-on-metal SMD Pot using a metal screw driver, things short out............... yep.. every time my guy..
3) If you know your module doesn't have battery protection, then ensure your battery has battery protection. This is kind of a no-brainer. It's nothing to puck up a small DW01 based module for 18650's. (shocker i know)
After watching the video... it seems to me you are having buyers remorse, because you didn't understand the product you bought. It's clear to see just by looking at the module there is no battery protection. If you didn't notice this, it's YOUR FAULT. It's OBVIOUS that you're not going to get more current than a few amps, just by the size of the device, and it's purpose for use. It's designed for small electronic projects, not running a microwave oven off of an 18650.
Sorry my guy, but every complaint you have about this device is your own fault.
It's like buying a volvo for $5, and complaining you didn't get a lambourghini
But I still want that Lamborghini 😅
While your argument is fair, some of us feel that such a board shouldn't exist except as some obscure counterpart, that the design should have a DW01 (or other protection IC) on it and not need that added with a separate board. What's the point of cramming what they did onto a board that's so small, that they couldn't even manage to fit mounting holes on it, and STILL need to add another PCB just to do the function almost everyone is going to NEED, even if they don't realize they do.
However, on the topic of size, TP4056 itself is a bit ridiculous. Even if the module is only $1 each or rises to that (knowing they are cheaper in bulk), the cost to integrate a larger transistor in it would be what, two cents? It wouldn't even need a larger PCB sink area in instances where it doesn't need to go past 1A, maybe a slight layout shift for a few sq millimeters. I state this, having noticed the obvious, that being a linear regulator, they do get pretty hot for no *good* reason. This also means that along with no mounting holes, I can't do what all the kids on youtube are doing which is fasten it all together with HOT GLUE, lol.
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