How to use TP5100 2A 8.4/4.2V 1S and 2S Lithium Battery Charger DIY 

My pleasure!

Hi Asha, I am glad you found my tutorials helpful.

Glad it was helpful!

you are welcome. Agreed with your statement.

Mr. Kay, I am pleased that you like my tutorials. Yes indeed for each video there is lots of efforts. Very few such as yourself know this. first of all battery capacity and charge parameters are the most tricky part of working with them. The charge current is determined by the manufacturer of the battery. charging above the rated current will reduce the battery life. So you have to find the datasheet. for example for the Panasonic battery shown in video here is the datasheet www.batteryspace.com/prod-specs/NCR18650B.pdf and it says the the standard charge should be about 16550mA. or lower. I have spoken about battery protection in this video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3dwA8A8VrrE.html so generally for less than 10Ah batteries, always go 0.5 of capacity or lower to protect it.

@@robojax Thank you again so much for the reply. I will identify and look for data sheet & their recommendations. I have never posted a video on youtube, but have a great understanding on lighting, camera angle or position, just a lot. This is basics, but you go a long way to provide information at least I find extraordinary and as accurate. You have my total respect in your total presentation. My last job had me holding automotive technical 4 hr. seminars for 20 to over 100 each night during a whole week in a different town or city. So the old “Dog & Pony” show. Taking photos, screen captured from a lab scope or scan-tool to use these in the power point was not in the job description. But the presentation had diagnostic holes in it, large enough to drive a truck thru. Advanced Charging systems, Serial Data (6 types in GM vehicles), etc. Magneto-Reological-Fluid used in struts in place of traditional oil and valving found in a common shock. Called “Active Ride Control” and other terms, but basically tiny metal particles suspended in oil. When a magnetic field is applied at a variable rate, change at 2mS changes from a thin less viscous oil to a rigid hard non-fluid material. This was started in suspension in 2004 Corvette. Acura used it in rubber motor mounts. When ran on a dynamometer, the vibration generated on up shifts, down shifts, all parameters, they mapped the dial-in amperage required was downloaded into a EEPROM and allowed later to change the ride feel, smooth, sport, racing anything they wanted. So, electronics coupled with mechanical applications is amazing. So a basic understanding was needed to pass along to guys/gals who may have to work around these or replace them, then recalibrate. Total electric vehicles make no noise (Very Little) but I joked two decades ago that waterproof speakers could be added to allow the driver to turn a knob to make it sound like a hot rod V8, 10 cylinder Viper or a loud 4 cylinder w/turbo. No, people on phones walk into streets and get hurt or killed. Laws maybe passed requiring them to make noise. The possibilities are endless. Just sharing as the guy who makes a simple kit can patent this (Installed by customer on older vehicles) but make millions, if a manufacture buys the patent or the rights with a percentage for license for each one sold/used. It’s a gold rush, but few would think of it or pursue it. I have ideas. Ok, enough. Blessing to you & loved ones! Thank you again. I could be reached as I am just working on my own old truck for me. A project to keep both hands & mind working at 62. Stay safe!

Hello, Mr. Kay, You are welcome and I am glad you like my tutorials. You've got so much experience. wow. I've read your comments and enjoy them. To make electric cars noise, many states have considered/did pass legislation to to make it mandatory to have noise added. I am not sure if it has been implement or not. I have an Arduino course which starts from absolute beginners and up bit.ly/rj-udemy God bless you too and your family. you too stay safe.

My pleasure!.

Here is my other channel which on Solar, charger and batteries ru-vid.com/show-UCvT_lj6oLAqq60s7VUcTczQ

My pleasure

Thanks for the visit

Tôi vui bạn thích nó . Xin đừng quên đăng ký. nó sẽ giúp kênh của tôi phát triển.

Hi Recardo. I am pleased that you like the video. I have it on my "to do" list. When timer permits, I will make video. of that.

Beğenmene sevindim.

Glad you enjoy it!

You are welcome. I am sorry I did not understand. Which LED?

@@robojax The leds that are connected to pin 15 and 14 pin to tp5100 and 1k resistor that comes from input. near by there were 3 pads, and in your demonstration were shown using tester of touch each pad and led indicates. in that position can i give led connect.

The LEDs are turned on using the chip. You can connect additional LED for sure. If you connect it in parallel, it will turn on but might be dimmer. As I have shown the diagram, connect them to pier via 330 to 1k ohm resistor

When the battery is fully charged, the RED will off and the BLUE RED will on. YES. No need to remove the battery from battery holder, except you want to use it with different device.

as I saw interest in Lithium batteries, I purcahsed boxes but don't where to use them expect to make video. Why and where do peopel use batteries so I learn and use. Then perhaps I know I would make better videos. until now I pent like over $2000 for batteries and they are on the floor.

Yea it can because the path is different for charge and usage. I don’t have it in hand to test though.

you are welcome. Yes you can. I have moved most of battery and engergy relaerd videos to another channel called WattHour here www.youtube.com/@watthour

@@robojax Thanks, I'll take a look. 👍

I don’t remember but I know for sure if this module has such features I would have explained it. So watch fully and the answer.

Bonjour, je suis ravie que mes tutos vous aient plu. vous pouvez connecter votre batterie pendant qu'elle est chargée UNIQUEMENT si vous la connectez à la broche VIN d'arduino ou à la broche de l'adaptateur d'entrée. Jusqu'à 12V n'endommagera pas la carte Arduino.

@@robojax Merci C'est bien noté, 12v maxi ,Oui je suis abonnée depuis un bon moment à ta chaine et je la regarde toujours avant d'acheter des modules , car tes tests sont complets et clair , en plus il y a les traductions , ça facilite la compréhension, pour moi tu reste toujours la meilleure chaine pour tous les modules chinois, longue vie à ta chaine.

Merci beaucoup et restez en sécurité. J'apprécie de partager ma chaîne sur votre facebook et vos amis.

Hi you are welcome. , you did not mention the capacity of the battery. I mentioned in the video that you have to limit the current. The current causes the battery to get hot and life of battery is reduced significantly. I have given example about capacity. please watch it gain.

Probably use a 2s BMS as well along with this TP5100 module. TP5100 should supply power to 2s BMS. 2s BMS should supply balanced power to 2*18650 batteries.

@@robojax Hello, As the video says, The Negative and Positive wires are connected to the S1 Battery, then You connect the wire from S1(+) to the S2(-). My Question is, What do I do with the S2(+)? Should I connect the S2(+)where the S1(+) is connected or do I leave it there?

You are welcome.

Thanks. Yes you can if you set both voltage at exact values. Slight difference of voltage causes the current to flow from one to the other and waste the energy.

Hello, yes you do as many parallel so you like. But remember the amount of current this module supplies stays the same so the time will take longer. inf your case it will take twice as long to charge. if you use 1s3P, then the 2A from this charger will be divided to 3 and it will take 3 times as long to charge them.

@@robojax Thanks very much!

تشکر‌. . خرسندم که خوشتان آمد . سلامت باشی

سلام علیکم. مجرا (کانال) فارسی علم و فن را راه اندازی کردم: لطفا به دوستان تان خبردهید و حمایتم کنید. www.youtube.com/@ilmofan

Hi, I just added the PDF datasheet on the resources page. in page 10 in the table is says: no battery is connected or the output capacitor 10μF (issue or missing)

The link to the Thermal camera is in the description of the video.

Yes you can

I need to know also..

You may right. Thanks

You can but with this module, your battery will be damaged. you need constant current controller which this TP5100 has .

Hello, I believe I have explained it and demonstrated 1S and 2S charging. for one sell you can connect it to 5V but for 2S you need higher than 8.4V at input. But I did not understand why you would connect this module with another module. two battery is 2S already which this module can charge.

@@robojax Hello again Ahmad. Firstly many thanks for your answer. My electronic intelligence is poor. I thought that I need bms module for balanced charging between two bateries. You mean we don't need extra module, TP5100 can do that even there is no wire between two cells, right?

I have the same question as you clearly note in this video this module won't balance the 2s batteries. I came to your video for TP5100 from a HX-2S-JH20 thread that is better to use the the former for a correct charge. As another member here asks the same, would the output of TP5100 should accommodate a HX-2S-JH20 for balancing?

buddy u are right...u need a 2S BMS to protect and charge batteries indivually...

you are welcome. not forgotten. I've shown it or mentioned the current.

Yea you can. See datasheet the way I explained it voltiq.ru/datasheets/TP5100-datashhet.pdf?darkschemeovr=1

chargers are here ru-vid.comsearch?query=charger and balancer is here ru-vid.comsearch?query=balancer

Voltage is voltage. does not mater where it comes from.

yes but with all protections or charge and voltage.

Hi, I have over 450 videos and almost forgot what I have done. Here is how to find Specific RU-vid Video in a channel bit.ly/findRU-vidVideo

just saw it on Google and NO. I have not done. it.

I just searched the circuit for the module you mentioned and it is exactly the same protection as shown in this video so watch this to learn how battery proteciton works ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Lk__xTxLlY0.html

Power =P, Voltage =V and Current =I, So for input P=IV=5(1)=5W, output P=8.4(1.9)=15.96W, absolutely not possible. you have $5 but you want to buy $15.9. Power never increases and not even the same. we always have losses. about 10% to 15% is lost at output Only voltage and current is changed.

That is correct. When you connect in parallel, the voltage does not increase. Only charge time increases

@@robojax I was expecting 4.2V on each battery Thanks

this is BMS. you BMS h as protection. But can't control the current as to how much should go to your battery. this module can allow up to 2A. but if you connect a small battery with capacity of for example 500mAh and charge it with 2A, it will get damaged. So you need to connect a power source to this with controlled current (ampere). that's why connected your charger that controls the maximum current. An example of a charger would be a step down converter with constant Voltage (CV) and constant Current (CC). So you set the output of that to 8.4V (for charging two cells) and set the current to 200mA or whatever value your battery require. if allow more charge current that your batter require, battery get damaged. So find out about your battery's charge current. Good luck

Learn about battery protection from this video of mine in another channel which is all about power, charge and battery ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Lk__xTxLlY0.html

Assalamu alaikum Mr. "Allahu Akbar", I am glad you found my videos helpful. TP4056 is for 1S see datasheet here dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/TP4056.pdf See my other videos on chargers ru-vid.comsearch?query=charger

@@robojax Thank you for your quick reply and kind cooperation. I just bought a festnight bench power supply. Please make a video for the usage of bench power supply. Greetings from madina, Saudi Arabia.

@@robojax I very happy with your saying “allahu akbar” that’s mean you are muslim same me. Good luck.

It doesn’t matter where you use it. I have shown voltage and maximum current. If you application need equal or less than the current and voltage is the same, then yes you can use it.

@@robojax thank you brother.. I will try.. jazakallah.. and I did subscribe u r channel also..

sorry I did not understand. may be you did not watch the video fully. did you? for one cell it needs 5V input. for 2S it needs at least 8.4V at input.

I have no questions if you watch it. So please watch

@@robojax I have watched your full video but just for confirmation 😜

no. if you watch it, I've explained that it separate wires for charge and separate wires for load.

What do you mean? There should nothing left without explaining for this module

Hello, it seems you have not watched the video fully as I have explained the voltage and demonstrated it. it is not the matter of which one is better. Please watch fully.

I belive I have answerd such basic questions in the video. Don't remember it .

No. It needs DC voltage.

Parallel is not a good idea but it work. why not good idea? over time modules change the output voltage a little. that little variation in voltage causes the current to flow from ONE into the OHTHER and that is waste of energy. Very few like less than 0.1% of people will configure this for higher current.

@@robojax but is it possle for high current?

you want to me to repeat my previous comment. yes and no. Read it please.

You have not watched the video. Please watch to get your answer

you can't get such a thing. you need to get Step down converter and put it before this charger.

@@robojax ok, that's what I thought

It it a thermal camera, I just added the link to the device in the description of this video.

Yea it can.

@@robojax Then, is it fine to charge 2x 18650 battery (in series) with 4 amps of current?

it is very tricky. don't use it in parallel or series. get different module.

I believe I mentioned "Undervoltage protection" and it is mentioned as over discharge protection . please check the datasheet in the resources page robojax.com/L/?id=265

@@robojax can i use this tp5100 with a 1s bms for added protection?

I am not sure about that model, each battery cell needs one wire and we need one common ground.

@@robojax without ground new bms other modal it was working yes or no

Without ground means you want not turning a light with one wire. No.

I just added the efficiency graph in the resources page. the link is in the description. You can see other files and datasheet.

@@robojax ok thanx.. I'm gonna use a different method to my project.. since mppt is expensive, i'm gonna either connect my FV panels directly to powerbank module's mUsb with a switch (i'm afraid of current flowing into them when charging from a wall, since current always go the lowest resistance path) or using buck with 5V 3A USB out and then connecting to mUsb on pb module..

I believe I have tested and shown maximum current. it is in the title as well. So when you connect two cells in parallel, the maximum will be divided by 2.

you need a power supply with contestant current or CC. Search my channel. Here is how to find Specific RU-vid Video in a channel bit.ly/findRU-vidVideo

Just connect 3A 50V diode and put in + line between this module and your power source. anode of the diode to + of power supply and Cathode(the side that has line) to the + of this module. Diode will reduce the voltage for about 0.7 voltages but protects the module.

@@robojax OK, I was thinking about the other side should the polarity of the connected battery be wrong. The unit is suppose to be polarity protected should the battery be placed wrong polarity but in another video someone did this to prove if it was protected and the chip smoked.

Have you watched the video? This video has chapters. Wow please watch

If you don’t know what chapter is, then watch 2 minutes of this video, I have explained demonstrated it how to select chapters

Watch the video please

inverters are expensive and I can't afford to buy them. If I receive them for free, I will do it.