2$ LiPo Charger & Boost Converter? || TP5410 Test

let's say you just created an awesome circuit that requires five folds to work properly and you want to make it portable the easiest way would be to use a small lithium polymer battery in combination with a boost converter to step up the 3.8 volts of the battery to stable 5 volt outputs but to prevent the battery from over this charge it is advisable to add a TPU 40:56 board between the battery and the boost converter which also prevents the battery from short circuits and can even charge it up to the micro USB inputs only problem is that this setup is relatively big and does not ideally suited for portable applications so it would be the best if we have one circuits which can charge up the battery protected from our discharge and short circuits and boost the voltage up to 5 volts a popular bow type which can handle most of these jobs are the Adafruit power boosts but needless to say they are not the most budget-friendly option luckily though I recently found those beamers t1 mini battery shields which can apparently charge up a lipo battery and boost its outputs up to 5 volts but since the datasheet of the mine I see here the TP or 4510 is only available in Chinese it is quite hard to grasp all the features the board offers so in this video let's do a couple of tests to determine all the available features of the boards and measure the efficiency of the boost converter let's get started [Music] first off I dissolve the past year lipo battery connector and directly sold the positive and negative wire of my battery to the appropriate terminals now by measuring the voltage at the 5 volt pin we can see that the circuit successfully boost the voltage up to 5 volts brought any problems so let's start the testing by using a piped power supply in order to charge up the battery to its charge and cut off voltage of 4.2 volts after plugging in the microUSB cable the red LED lights up and the battery gets charged up with a constant current of around 500 milliamps and by shorting the to solder pads on the back we should be able to increase the charging current to one end which was more like seven hundred milliamps at best but nevertheless once 36 minutes has passed and the battery voltage reached four volts the charging process and that the constant voltage modes end after a total time of around one and a half hour and at a cut-off voltage of four point one eight six volts the green LED lighted up which means the charging process was done so all in all the constant current and voltage charging modes work nicely only the charging current was a bit low another useful feature is that when the microUSB cable is connected Deepu circuit automatically disconnects NT v with outputs delivers the USB power but you should be careful when disconnecting the USB cable since it creates a small over voltage on the output now for the next tests I D so that we lipo battery wires due to safety reasons instead I connected my lap and power supply to the battery input of the circuits since I can simulate different body voltages puppets and also set a current limits in case something goes wrong on the output side of the circuit though I connected my DIY power logger and the potentiometer SD first loads to start the efficiency tests I first utilized battery voltage of 4.2 volts slowly increase the load on the outputs wrote down they'll put current the flash power and the input power and repeated this process until I had four values then I change the battery voltage to 3.7 volts repeated the measuring process and finally load the battery voltage to run a low value of only three volts and obviously repeated the measuring process as well at this point the highest output current draw was only around 40 milliamps so to increase it's up to the maximum claimed output current of one amp I remove the potentiometer and replaced it with a couple of different high-power resistors now while measuring the outputs and input power of those resistors the output voltage was pretty much constant at least until I used the 15 ohm resistor this one through three hundred and thirty millions at five volts which seemed normal at first but once I lowered the input voltage down to the nominal voltage of the battery the output voltage collapsed which means that the maximum output current of the circuits is only around 300 milliamps and not one end but nevertheless I then used to recorded values to create a chart which represents the efficiency over different output current Ross the first thing to notice is that the higher the battery voltages the higher the overall efficiency is next it is also mentionable that the maximum efficiency of 90.2% is reached at a current row of 110 millions and the overall efficiency never falls below 83% which is actually pretty decent so all and all the deepest converters efficiency is fine but the maximum output current of only 300 milliamps is an eyesore now let's see at which point the output voltage cannot maintain defy board outputs by slowly decreasing the input voltage as you can see at a voltage of around 2.6 volts the output voltage breaks down close to underneath the input voltage that basically means that there's no over discharge protection and the circuit will completely drain your battery if you're not careful last but not least let's set a current limit of two amps at the inputs and short the output of the circuits as you can see the output voltage breaks down but the short-circuit current of 2 amps still flows which means that the circuit does not feature a short-circuit protection evil so let's come to a conclusion the charging of the lipo battery works decently the boost convertor works flawlessly as well but its maximum output current is pretty low but on the other hand due to its low quiescent input current of only 13 my cramps my 1103 amp hour battery could power the circuit for 9.6 years the only three negative aspects of the circuits is that there's no over this charged and short-circuit protection but if you are familiar with electronics then this should be a fair trade for such a cheap two dollar boards I hope you liked this video if so don't forget to Like share and subscribe feel free to write suggestions on what I should test next in the comment section and as always stay creative and I will see you next time

Channel: GreatScott!

Views: 501,861

Keywords: wemos, d1, battery, shield, lipo, LiPo, charge, charger, boost, converter, 5V, output, step, up, TP5410, test, review, features, efficiency, adafruit, power, cheap, budget, friendly, 2$, over discharge, short, circuit, CC, CV, constant, current, voltage, overvoltage, electronics, greatscott!, china, chinese, board

Id: aND0j2Y2IkM

Length: 7min 28sec (448 seconds)

Published: Sun Jul 23 2017