Four refutations: 1. Mass production allows manufacturers to sell fully built modules far cheaper than we can even buy the parts, let alone produce a PCB. I can get a TP4056 module for 40p. 2. A module on a PCB looks far better than the rat's nest of wires on a typical diy project built on perfboard. You can't compare a 40p module with a £1,000 iPhone. 3. It takes me about 1 minute to change the resistor on a TP4056 module that sets the current, which allows full compatibility with any Li-ion battery. 4. The TP4056 follows exactly the recommended charge phases for a single Li-ion. Nobody needs any other capabilities for 99% of applications.

These charger modules enable us to create a USB input jack into our one-cell projects. Also, to fit litihum cells into a space once occupied by three AA batteries. I have about a dozen different project boxes I have created, and I don't worry as much how they look on the inside as they do on the outside. This allows me to have a flush mount USB jack and I can use the on-board LED indicator by way of a light pipe or opaque insert. When I have a higher voltage project, I use a BMS plus CC-CV DC converter module set to the required parameters.

HEALTH beep harmful to those using earphones!! (lower the sound on that beep)

There is no such thing as a "nominal current" of a rechargeable battery. What you read on the battery at 3:55 was the battery's rated _capacity_ of 2000mAh. That's a charge in milliamp-hours, not a current in milliamps. The capacity is an indication of the product of current and time before your battery runs out of usable charge, for example 200mA for 10 hours, or 1000mA for 2hours, etc. Your advice to charge at the three-hour rate (sometimes called "C/3") is a reasonable compromise, but won't suit every rechargeable battery available.

The TP4056 should really be combined with the DW01 and a dual NMOS like the FS8205A, so that it has over current and under voltage protection. There are good guides online for hobbyists on how to implement the circuit.

You can change the charging current on those charger pcb boards by changing their resistor values. Look at what your battery requires on its data sheet and adjust the resistance on the board for your particular application.

The part about setting maximum charge voltage to 1.13 x nominal voltage is just absolutely crazy. Nowhere in the technical literature have I EVER seen that! Yes, it kind of works, for 3.7V nominal lithium ion, or 3.2V nominal LiFePO4, but you should not be telling people to do that calculation. The datasheet will show the maximum charging voltage - just use that. Also, I totally agree with other commenters that using these modules is fine for most projects - you order the correct one for the battery you’re using, and set the charging current according to capacity (usually C/2 or C/3 - again, use the datasheet!). Using the bare chip is only useful if you’re designing your own single-PCB solution - modules are always cheaper and easier for every other case.

This is not a channel for hobbyist. This is more so for professionals who are familiar with electrical engineering already and wants to build a custom everything and stay away from open source/ widely used components. Now I actually agree with many of the suggestions he provides when doing electrical engineering in a professional setting. But I think most people watching these videos are young engineers and hobbyist looking to make cool things with the least amount of work. Now I'm sure it is crucial to select a proper charging IC when building products in industry but most hobbyists would ideally not like to design their own PCB for their first attempt at a project. the TP4056 is a perfectly fine board and it accomplishes what most hobbyists needs. I really enjoyed some of the other videos he does particularly the one with the POV display. But some of these videos that discourage against breakout boards and Arduino products is doing a disservice to new hobbyists and young engineers. I believe the suggestions you provide are helpful but the practicality that someone will opt to design their own charging circuit and source the appropriate IC, instead of using a breakout boards is very unlikely, the potential benefits of doing so does not out weight the time it will take to sources parts designs a PCB and assemble the PCB, and I don't think you can do all these steps cheaper than the TP4056 manufacturers.

Good/useful note about temp sensing; I’ve used a fair number of batteries and charger modules, and wasn’t even aware there were batteries with thermistors built into them. Most small electronic projects don’t stress the batteries to the extent that we have to worry about temperature rise, but it’s good to know about the batteries with thermistors in them if we need to make something with high power drain and/or using very fast charging. Thanks!

I've been waiting for this video for years. All previous videos and sources contracticted between themselves. Thank you very much!!

Not always is the yellow wire for thermal monitoring. In my LIPO packs for my RC equipment, the additional wire(s) in the battery connector are for voltage measurement of the individual cells when charging/discharging. 1 wire for each cell. So if I have a 2S, there is 3 wires in the connector total, 3S- 4 wires, 4S-5wires, etc. And yes, there still can be a thermistor imbedded in the pack as well, resulting in one more wire to the total. You can very easily tell if the battery pack has thermal sensing or not, but at least on the RC LIPO packs I'm familiar with, the additional wire(s) are for voltage sense of the individual cells.

I learn every time I’m in your channel. For a while I’ve always wondered how to configure my power supply for its constant current or voltage procedures. Super thanks!

I would be interested in a video from you where IP2312 is compared to TP4056. I know the TP4056 reduces the charge voltage by "throwing away" heat, sort of like a programmable resistor in series with the charge circuit. This means they are best used when installed against a heat sink (attached to the bottom of the module, not the top). One clarification to what you said, charging current of these modules is definitely under your control by varying the current setting resistor to the desired current, either by changing it or extending it to a potentiometer or multipole switch in combination with resistors.

I think internal resistance of the accumulator is the major part limiting the current during charging, aside from the power source amperage of course. If leads resistance is the limiting factor, I reckon it's time to change the leads 😉😁

Practical for us.. thank you. Keep up

at first it was difficult to listen, because I do have deficits in managing your accent. Regarding the charge of batteries you answered nearly all questions I asked myself for a long time - great! Good explained thank you

great advice thank You. and it arrived at the perfect time 👍👍

Hi , great content. I'd like to see a project and description of multi cell lipo charging. There must be a way of doing this safely with fairly simple circuitry. Cheers

Thanks for the video. I have learned many new things from you. 👍

I know everything but love to hear you speak and teach. Clear and constructive. My neutrons are now conducting again. Thanks you.😊

what a great summary. Thanks for the video

Very cool! So am I to understand that the constant current/constant voltage charging phases happen automatically? I had heard of these phases before, but I always assumed it was some kind of smart IC that decided to switch phases. I didn't realize it was even possible to do the two phases with a bench supply.

Great video! If the input voltage to the charging IC is 5V, what is the output voltage from this IC? From the video as well, I learnt that the charging IC can make our work original. This is awesome! Please, can you also make a video on how we can use switch-mode-transformers to build our own power source from a scratch. Thanks.

Thanks for the helpful video.

One issue is those pouch cells usually contain a BMS board. If you try charging with a USB bms board designed for a naked battery, it will sense that the battery is low and needs more current and get confused.

Very well explained

Good explanation. Thanks.

With these teaching skills and winning accent, sky's the limit. Good stuff.

Much obliged.

As an electronic engineering student, your videos are very detailed sir! I literally learned a lot from you sir, Thank you for sharing your insights. God bless!!

FWIW, the PicoZX (Spectrum ZX emulator) project uses a battery charging module soldered directly on to its custom PCB and, IMHO, looks very good.

Very good. I plan to do a battery charging experiment soon.

ممنون مهندس خیلی عالی بود. بدردم خورد❤👍👍

Awesome tutorial on battery charging, most importantly covered almost every basic so beautifully

Very simple but inside about batteries charginf , keep it up

Amazing your videos , thanks for share your experience, im learning electronic and has very nice content interesting, keep doing, you explain super good ! Congratulations , i like so much whatch videos with people to really love this amazing world, is Very satisfactory practice and learn every day more ! Thanks again !

Thank you Mr.

A truly wonderful vidioe so interesting , I would realy like to see it againe a quite in deapth look at charging , very profeshionly given . Much appreciated many thanks ,realy great .

Careful with the terminology of; 'cell' and a 'battery', being individual cells connected to produce higher voltages (series connected) and/or storage capacity (parallel connection). Look how many refer to a single 3.7V Li cell as being a 'battery' in the comments.

hahaha I love the ending! Great clip btw.. informative as usual. I wish you were my electrical engineering teacher all them years ago.

Great video. Thank you very much. You are a great teacher.

You are wonderful. Keep going

Thank you. Very good.

Nice video. COST? I couldn't build that for less than the selling price. 10 for $8. Looks? I am not APPLE and that looks better than anything I could build. Can the charging equations be used for NiMH cells?

These videos are getting better. Please focus on advanced content, there's already too many YT channels covering basic electronics. I prefer to see cct diagrams in the videos, not just verbal descriptions

Nice video, thanks!

Good job. Bravo. Continuez ce bon travail. Bonne explications bonne diction très compréhensible si on n'est pas un anglophone. Bonne prononciation et bonne vitesse. Vielen Dank.

What happened to your channel before? I am very glad you are back Very helpful tutorial

In most cases you don’t need to monitor the battery charging with a microcontroller, just measuring the battery voltage is often enough.

Wow this answers a lot of questions I couldn't find the answer to on forums full of electrical engineers. I am trying to design a switching module BMS for a 48V battery system. This at least gives me the groundwork to get started. I am not sure about using a relay on the output of the chip as this will not give me the correct power consumption from the battery. Would it be possible to use a "divide by" circuit to measure voltage using a smaller chip? In any event, the current would be more important to measure as in this case the voltage source is 54v at 2 amps. Secondly, I suppose I need a chip that can output at least 2 amps, since the relay draws approximately 1.8ah at 48v which seems very high. I would like to activate it independently and measure the actual current being drawn. The fact that there are ICs dedicated to this is great! I was scouring around trying to find a circuit to adapt or use for this project and came up with nothing.

Thank you sir, as soon as I saw your YT name I hit subscribe, I have some of these prebuilt charging modules but some don't work (guess I can strip and repurpose - maybe using a variable resistor in "Prog") to revive some "did you say ZERO volt" batteries? I just bought a huge amount of these in a recycle project. I figured if it is ZERO then it is dead (and my "smart" charger doesn't even charge them from zero OR .01V)

i use tp4056 a lot but never knew it has hidden features.... i might check the documentation and try to improvise/modify my chargers...

Are you reposting this? Because I seem to remember you got dragged over the coals last time I saw this. TP4056 is dirt cheap and simple. It works. Yes, there are some chips that can charge at a higher rate but you can easily modify the TP's for more than 2A but there are modules that are cheaper for that. The big reasons why the TP is so great is the newest module that has the protection for the output AND if you use isolated power supplies for each module you can build a balance charger for under $20 for up to 100V

When i start to see your video.... First my eyes go to your components organiser sleve/Box..(left) And then water bottle (right) By the way great video.... Thank sir.....

I prefer to set power supply voltage somewhere just above the measured voltage of the lipo and ramp it up gradually as the voltage of the cell catches up until we get to 4.18/20/35 if you're feeling saucy

thank you to you too 👍🏻👍🏻😁

Thanks man 😊

Very imp knowledge, But in all equipments used li batteries and we charge them using local charges, cant these chargers harms batteries, pls reply

There is a version with the protection IC. it has overvoltage and undervoltage cutoff.

Very interesting video !

with your reasonings, this should be about high-production, niche, commercial charging approach (the title, I mean, as well as the target audience?) but some things are not that coherent(?)

Thank you Man :D

Great video sir❤

Nice. Thank u

Great!

Could you comment on how to use TP4056 with a external NTC l. If I want to add temperature safety's to an 18650 charge circuit how do I choose a NTC which could limit if temperature goes up?

Keep on posting new videos. We need quality contents like this.

I'm looking for a charger for Lith Ion 3.7 V that will inhibit charging at 0c or below. Do you know of any? Thanks

I am planning to remove the mains battery in my phone and replace it with 1.5 volt dry batteries unchargeable with a suitable circuit, does this work correctly ? How many batteries do I need ? How complex will the electronic circuit between the phone and the batteries be ? How much will the cost be as an estimate in U.S dollars ? Knowing that my phone is Redmi Note 7.

what would u recommend for charging two 18650s in series ?

Yuo use a litle more voltage , in that way the electrons ( currebt) flow to the vattery directurtiin ,like water in a higer podtion respect to other

Batteries should be fine to charge/discharge at their nominal current as long as there is enough cooling to maintain the temperature withing limits.

Thanks

I like your video, Sir. Hope that you have time to make a video about the latching circuit using an N-Type or P-Type Mosfet and 1 tact switch. I am currently developing a low-power switching circuit for large industrial motors controlled by an SSR or mechanical.

I have a 300mAh Li-po battery can i charge it with TP4056 IC and do i have to limit current to 100mA with a resistor in Prog pin? 🤔

There are 10 important points on selecting a proper charging IC, not 8. 1. The most important one: is it a switching design (aka SMPS, probably buck regulator) or lineal design. 2. Heat-sinking for the IC and it's surroundings (like inductors for switching design). 3-10: prevous 8

Usually I like your videos but this one I totally disagree. All those 'simple" modules have charging ICs so I don't get it what is the problem. if I have a 1 cell Lipo Battery I'll buy charging module for 1S LiPo configuration . If I have 1 cell LiIon i will buy charging module configured for LiIons so where is the problem?

I bought a same card. Its says use 37% of amp of batter Mah. Its also gave list of resistor to use to get different ampere. Its mannual was great sbd it wss cheap so

Okay, so don't use a charger module, that's made with a TP4056 chip. Instead, use a TP4056 chip. Also, what you say about chargers not cutting off their current at the end of charge is complete nonsense. If the charger is regulating the voltage to 4.2V, and the battery is already at 4.2V, zero current will pass. That's how electricity works - if two points are at the same voltage, no current flows between them. There is no such thing as a power supply that continues to deliver current when the load is already at the same voltage. Next, charging current. All of these charging modules have resistors that set the charging current. These typically have a resistor in place that will charge at 1 Amp, but it is easy to change the resistor to match the current that your battery needs. Next, low-voltage cutoff. You are right, charger circuits do not shut off the load when the battery drops below a threshold. But that's where you still have other options. First, if you're using a battery that has a built-in BMS, it will take care of this for you. But second, you can use a charger module that also includes the BMS chip and MOSFETs. Those are still cheaper than the parts you would have to buy to put them on your circuit board. Finally your circuit will look unprofessional? Here's a hint: package your product so that the internal circuitry isn't visible, and make internal interconnections tidy. I wouldn't know if my phone used a charger module, because my phone is kind of permanently sealed. Now I'll admit, if I was making a commercial product that will need to be manufactured in runs of 1000 or more, I would incorporate the charging circuit on the main circuit board, but for low-volume runs, charging modules, and even other modules or "breakout boards" for specialized chips can make sense, especially where there are multiple chips that can be used for a given function, without affecting circuit operation. This can prevent having to make a new circuit board when it becomes difficult to get a specific chip, and with many chips evolving in 6-month cycles, you never know if you're going to have to change chips. So yeah, if I'm designing something that will be low-volume, I have no qualms at all about using modules.

A VERY simple charger for cells salvaged from disposable vapes ( found on most sidewalks ! ) is to use a 5 Volt USB outlet with a Silicon diode ( 1N4007 ? ) and a resistor ( 22 Ω to 100 Ω ? ? ) in series in the lead to limit voltage to 4v2 , and charge current ... this is not ideal , ( but it works ! ) ....... ( tried - n - tested ) ............... DAVE™🛑

Could you please give more examples and tests for different IC and different battery types and current ratings.

The formula that derives the charge termination voltage from nominal voltage doesn't exist, as it depends both on the charge termination voltage as well as knee voltage when the cell is exhausted. 3.6V nominal cells are generally fine with 4.2V termination voltage (500 cycle life nominal), 3.7 and 3.8V ones are usually used at substantially higher charge termination voltages, HOWEVER you can just charge them to 4.2V and you'll get more cycle life out of them, so i think the charge termination voltage of a typical module comes out perfectly OK! Current trimming existing modules is very easy. I have also seen a chip for power bank which doesn't need to be current trimmed, it trims itself by driving towards a certain voltage gradient, and some devices and modules based on that. It's also convenient for powering your electronics since the cell voltage range is both too high for 3.3V ICs and too low for 3.3V regulator inputs. Word of note: many TP4056 boards are missing the supply resistor (0R4 nominal), causing the chip to excessively heat early in the charge cycle. Unless you trim it for lower current, at which point that's OK anyway.

V Good..!

Kindly say something about 12 v drycell or acid cell bettry charging circuits , how to made it

We should never connect a battery directly to a power supply. You need to add a resistor in series on the positive side to limit current. Not unless we are using a bench power supply with current limit which most people do not have. I = (supply voltage - battery voltage) / R. This is the most basic method in charging batteries. As the battery voltage increases, Charging current will slowly decrease and approaches trickle charge if the supply voltage is selected properly.

I wish tp-4056 had a voltage adjust down to 3.8v to maximize the life cycle of the battery for mostly plugged in batteries. other than that the module is dirt cheap and suitable for various needs.

From 5:45, how is the potential difference of 0.5v determined? Is it a constant value for all chargers.

There are also active balancers you can use.

I think you should include IP2312 ic in your list

Wonderful.

Add potentiometer. For control the current.

At 16:14 you said a new video would come of voltage regulators..... I couldn't find it on your channel..... Requesting you to please make that video

4.18 volts is too low. Full charge for a LiPo is 4.2 volts, so you need around 4.4 volts to charge it fully. 4.18 volts will never give you a full charge on a LiPo battery.

Should want to use USB-C PD charging modules?

4:38 how come the voltage shoots up on these PS when u first turn them on ? That shot up to 66v right there. I cooked an OP amp in a 12v inverter last week. Mine shoots up to 124v damn garbage. LEDs don't light up now driven by an op amp.

Can you explain why, when the voltage is constant, the current goes down? If I understood the equation I = V/R correctly, then when the voltage is constant, the current should remain unchanged since the resistance is also unchanged.

Im using those charger module, blue led is on, so it should be the battery fully charge but when i use it on headlights it only last for 30 minutes but when i use 18650 battery charger it will last for 2 hours🤦🏾‍♂️ at first i thought the battery was bad and order new 18650 battery but the same, after that ordered new that tp4056 charger it still the same🤦🏾‍♂️ why? I had to make it easy to charge bc i want to give it to my mom, she want to use headlights to look her chicken at night but dont want buy new headlight bc already had old one, it just the headlights charging board damage bc it soak in water🤦🏾‍♂️ im buy the tp4056 module i thought it will work well but it's not, it show fully charge but its not🤦🏾‍♂️ i cant give my mom the headlights if charging by joining wire like i did🤦🏾‍♂️ want to other good charger module i don't have money rn bc i dont have a job bc of social anxiety 🤦🏾‍♂️

I do have about a hundred of these charger modules, never occurred to me I could use just the ICs... 😭😂

All the math here should be considered to be "general guidelines" only. Some battery manufacturers provides much more reliable data and depending on their product from thorough testing

it may just be me but you should test with the sound of your microphone! it doesn't really sound good. ( too much bass ) when you sit at the desk it sounds dull and if you only see the power supply from above it sounds a little bit better! maybe you should experiment with the sound, in my opinion it could be a bit brighter! (it could sound fresher/brighter I guess!) ( ATTENTION! - I think! ) Friendly greetings from The Netherlands! Rob