Solar Battery Charger (LiPo/Li-Ion) || DIY or Buy
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Solar Panel Basics video: • Electronic Basics #29:...
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In this episode of DIY or Buy I will have a look at a commercial solar battery charger. That means I will conduct a few tests with it and afterwards create my own DIY version that improves the functionality of such a solar battery charger. And after finishing testing the DIY boad, I will conclude whether DIY or Buy is the winner. Let's get started!
Thanks to JLCPCB for sponsoring this video
Visit jlcpcb.com to get professional PCBs for low prices
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com)
@SurvivalLilly 5 років тому
I have waited for this video for years. Thanks for finally making it
@greatscottlab 5 років тому
No problem :-) You're welcome
@UselessDuckCompany 5 років тому
Let's face it, you are almost at a million subscribers!
@immortallusofficial9465 5 років тому
udc power bank personal heater
@sinus4784 5 років тому
Hellooooo
@anycatdessai 5 років тому
Deserving
@zelrex4657 5 років тому
I think I subbed at 200k or something
@rolandberendonck3900 5 років тому
Let's face it, Scott is the best :)
@noudlindeman1931 5 років тому
Almost one million!!!🎉🍰 Your channel is growing so fast! I’ve been here for 4,5 years now and you content is still the same good quality!
@WarrenGarabrandt 5 років тому
That DIY option turned out much better than it usually does. I'm happy to see that.
@pauljackson2126 5 років тому
I was troubleshooting the problem of my solar project at my university and you did help me with this video, right at the moment I was about to quit...Thankyou GreatScott!
@greatscottlab 5 років тому
No problem :-)
@lkahfi 5 років тому
This kind of episode I've been waiting for... good job!
@epicgames44 5 років тому
Absolutely amazing timing, been trying to figure out how to do this for weeks with no luck.
@AmnesiaPhotography 4 роки тому
Would love to see a higher power version of this. I really like The idea of having a charge controller, mppt, and inverter as one unit. Saving space, and extra cabling.
@brandonbrand2338 5 років тому
Agreed, the DIY version is definitely a winner, especially considering the added features. Nice video Scott. Always great!
@MCsCreations 5 років тому
Fantastic work, dude! I had no idea such board existed! 😃
@keshavawasthi268 5 років тому
Everytime great scott comes with a great idea his ideas and projects are pretty useful and his build up projects are also good
@greatscottlab 5 років тому
Thank you :-)
@jhh-jiynks6568 5 років тому
OMG thank you for being so expressI've and thourough in this presentation of your efforts. I'm excited to watch more of your videos. Best wishes !!!
@TheBigBadButler 5 років тому
Actually, I just soldered 4 5V Z-Diodes on 2 Solar Cells, and was able to load a power bank with that. The Z-Diodes kept the Voltage under 5.25V, and the power bank just took whatever it could, which resulted in changing current (50 mA to 1 Amp), but actually, that wasn't a problem. (The solar cells were rated max. 7 Volts, with an optimal voltage of 5 Volts)
@fbach2100 5 років тому
Awesome job ! For soldering, I prefer to pre-tin the pads slightly with the iron and then add a bit of flux and sit the small components in place using twizers and hot air. I find it to be much faster.
@xavierdemers-bouchard2747 Рік тому
Such a perfectionist..... Goes to test a solar panel outside. Gets frustrated by inconsistent solar radiation hahaha I'm with you sir.
@dennisyoung4631 2 роки тому
Another way of soldering Surface mount parts: 1)tin the pads with a minimum amount of solder. You want little more than a thin even film. 2) apply a past or gel type flux. 3) maneuver the part into position. Tweezers work well. 4) hold the part down with a bamboo skewer, then touch the soldering iron tip to each pad in turn. 5) when finished, clean with alcohol, e.g. 99% isopropyl or denatured alcohol. I recall doing this with sot-23 transistors, surface mount leds, 1206 resistors, and perhaps a few others. It gave neat results.
@szoszaty 5 років тому
Nice project! Maybe you can add an update at summer, how it performs on good lighting.
@NIKFLICK707 5 років тому
Bro what about that DIY oscilloscope that you told that " might be your future project"
@Cheese_1337 5 років тому
Didn't he make video already about it?
@pjsivley 5 років тому
I think it was one made from an old tv, more for proof of concept.
@NIKFLICK707 5 років тому
No that review of Chinese jyetech 20$ oscilloscope video he told that he can make one so I thought he will
@greatscottlab 5 років тому
No DIY oscilloscope in the making. Sorry.
@NIKFLICK707 5 років тому
@@greatscottlab No problem bro, thankful I ordered my USB oscilloscope and that will be coming in this week, what do you think about that bro will it worth, and USB oscilloscope coz I'm just a school boy and can't afford a 200+$ oscilloscope
@kellylowrance3144 Рік тому
I have been looking for a video about small solar powered projects. This is exactly what I needed! I subscribed as soon as i saw your Channel name. Great Scott! I say that all the time! 😁
@peterraeth4963 7 місяців тому
Excellent Video!! Convinced me I really do need a commercial solution and informed me as to necessary features. Thank you for your clarity.
@Brutaltronics 5 років тому
i love it when DIY wins
@kilakila5431 5 років тому
This is what I was looking for ....just loved it ...
@americanengineering2063 5 років тому
you were looking for 35% effeciency? at a cost of 10$ per board and 2 hours of labor? there are simpler. better. circuits suited for this type of project.
@kilakila5431 5 років тому
@@americanengineering2063 u r correct, its costly ...but i was attracted for MPPT and over discharge protection functionality .Any way its outdoor efficiency was 62%..
@epicgames44 5 років тому
Could this power a raspberry pi zero w?
@kilakila5431 5 років тому
@@epicgames44 I can't say because i dont know much about pi zero w...we need to check its data sheet and verify if it is suitable to use with pi zero w
@americanengineering2063 5 років тому
Yes it will run a pi zero w. if im not mistaken the pi zero w runs on 5v. but if you plan to use a solar panel, get a decent size. the tiny ones he showed at the beginning are only 1w and aren't strong enough to even charge a AAA battery. why did he even show those tiny things. his board does not work with small panels as such. so make sure u get atleast a 10w panel
@ilenastarbreeze4978 3 роки тому
Honestly this is the first time i have seen that board creation and it looked really cool
@josech5743 5 років тому
This was a great project. I found it very interesting and useful. Just 30K more 😁 I hope you are already preparing the 1 million special 🙌
@anandhakrishnant6788 5 років тому
Great video scott!
@georggross1232 5 років тому
Yuuuuuuuuuuush! DIY wins! And money and time for materials and soldering is not much of an issue for me, because I'm patient. VERY patient :P
@anjulkumar9183 4 роки тому
Your videos are amazing. I get to learn a lot from your videos. A very big thank you for the good you are doing for benefitting others...
@Joshua-ju5uc Рік тому
Thank you for all the information on how the solar charger works and how we might be able to make our own
@parameshpavin2708 5 років тому
That's nice diy circuit but little bit lag in efficiency overall its good
@m4gmu5hell 5 років тому
Maybe it would have been better, if you used SMD pots for the R9 to adjust the MPPT voltage for use of other solar pannels. But all in all a pretty nice circuit!
@greatscottlab 5 років тому
I like the idea. Thanks for the feedback.
@m4gmu5hell 5 років тому
@@urugulu1656 Whats wrong with a pot? If you use a 10k one, range souldn't be a problem. And it looks way more elegant than having a resistor flapping around in the breeze ^^.
@necronomicon1472 5 років тому
@@m4gmu5hell Bro, have you ever used SMD pots? You turn them literally 3 times and they're broken! (Or at least the ones I've seen before)
@m4gmu5hell 5 років тому
@@necronomicon1472 I rarely use SMD Pots indeed, but I had no problems at all with the ones I utilised before. Maybe you have heated them up to hot and they have become bad that way. I use ones from BI Technologies. They are quiet decent.
@necronomicon1472 5 років тому
@@m4gmu5hell I guess there are good SMD pots as well, but the extremly small ones kinda suck. It might be because the ones I used were cheap (on a chinese stepper motor driver) or because they are only good to be set once.
@sobertillnoon 5 років тому
I love how the best solution for putting the larger panel next to the light was boxes you had to black out stuff on.
@nobody2254 4 роки тому
That moment when I start a random video; and hear this voice and accent then yell: it’s GreatScott! And think : This guy is great; and video definitely is worth watching. Mit freundlichen Grüßen Von Portugal
@micky6045 4 роки тому
I know right
@R2053 5 років тому
last time i just hooked up my 5.5v solar panel with a diode to my tp4056 board, to charge and power my weatherstation at the same time, worked very well :P
@vaguedirector_7342 5 років тому
I did the same, I got a 1.5W 12v (Voc) solar panel and cut the traces on the back to convert it to 6v. Then I got a protected tp-4056 module for charging and a ht7-333 linear regulator for 3.3v output to an esp8266. imgur.com/a/CYQwCev
@SirJohnBorlaseWarren 5 років тому
@@vaguedirector_7342 Thanks for sharing, I've just started playing with esp8266's and have been looking for easy solar options for projects, can you share a little bit more detail of the circuit with me, please? Pete
@Ziplock9000 4 роки тому
@@vaguedirector_7342 Linear regular with a solar panel project /sigh
@vaioskaliakoudas6388 5 років тому
Well, for an high-skilled electronics guy like you, for some of them, the DIY solution is the best choice, because as you did it, you can make your own pcb circuit and customize it during the mock up, but a common buyer/maker, will choose a commercial one, without caring about its lacks because he may not have all the skills he needs to fully understand the product's spec sheet, and find out if it's the perfect one for him
@james130362 2 роки тому
I REALY LIKE YOUR PROJECTS AND EXPLINATIONS. Magic man
@purduephotog 5 років тому
Love it! What about the addition of super capacitors? Charging them right off the panel to take advantage of changing lights levels. Although it's obvious you aren't charge rate limited.
@Inquire98 5 років тому
"Thank You", thank you very much. I believe, feel, KNOW, think and trust, this is the BEST instructional video I have seen from you 😎😀 😎
@TheFinalRevelation1 5 років тому
Make a followup with a high-efficiency DC DC converter before the charger
@Doeff8 3 роки тому
Yup, I'd like to add a variabel DC output next to the 5V one.
@RomanoPRODUCTION 5 років тому
GreatScott, the builder of Winter Home Sun
@andynguyen1505 Рік тому
The diy solution is very impressive. Im currentlu working on the exact dame circuit for my research project and i was trying to change the resister devider to retro fit an 18v input. But like you said it had no protection on the battery side. Im going to be using this video for my research thank you
@akai454 5 років тому
Great job Great Scott :) . Yes , I've been frustrated by the lack of a perfect solar to Lithium charger/ 5V boost circuit for a long time too . So I used a small buck converter to step down the solar panel voltage to 5.2V to power our favorite 1S Lithum charger board . It doesn't use MPPT and I'm sure it's efficiency is Horrible . Great Circuit , Thanks for doing the thing that We've all been wanting in a solar 1S lithum power circuit :)
@greatscottlab 5 років тому
Glad you like it :-)
@Lambrosz 5 років тому
Nice video ! It would be beter to use an smd trimmer for mppt . I have done something similar but i used much cheaper method . Using a board with MP1584EN and a li-ion charging module based on TP4056 ic with battery protection and then a boost converter 3.7 to 5v connected to a switch for open close, my sollar battery bank still works like a charm for 4 years now with the same batteries . The only problem with this method is that you have to find solar panels 9v not 6v .The maximum panel voltage is 28v . My battery bank was fitted on my backpack and it was charging constantly every day , now im about to upgrade it .
@klin4200 2 роки тому
I'm an EE and i like so much your vids bro!!
@eduqg7 5 років тому
I have learned so much from you, thanks for sharing your knowledge!
@Towsti1 5 років тому
Can you do a video comparing different energy harvesting methods (e.g. RF, solar, piezo or thermal)?
@greatscottlab 5 років тому
I can put it on my to do list
@serhii710 5 років тому
@@greatscottlab and hook up some cool MCU like nRF52 to create a real autonomous sensor node. It would be perfect. And for everybody looking into EH topic - take a look into DOI 10.1109/mssc.2010.936667. It's the best science article on EH I found so far. Alongside with DOI 10.1109/SURV.2011.060710.00094
@Jadinandrews 5 років тому
@@greatscottlab also,mini inline generators to power smart water meters
@thepvporg 5 років тому
I think you need an extra wide tipped highlighter.... :) Nice project.
@DaNiKzz 5 років тому
Always good to watch your videos!
@gboyspeed 4 роки тому
Oh the quality of shooting paper and writing is top notch
@ClokworkGremlin 4 роки тому
I was thinking about doing something like this last night. PWM solar charge controllers run $10-20 on Amazon for the cheap Chinese runs, and MPPT controllers run in the $100+ range, and honestly neither tracks a lot of the data I'd like to be able to see. A $30 MPPT solar charge controller with I/O charge tracking would kill it on Amazon.
@daoneTM 5 років тому
Could you build an esp8266 weather station with that circuit for independent power delivery?
@electron-1979 5 років тому
Great work! Soldering is improving!
@sirpatrickrattschlegel2828 5 років тому
good project, also your soldering skills getting better quality
@LucasJaluL 5 років тому
Como sempre, excelente vídeo! Parabéns
@vgamesx1 5 років тому
For the buy option, not sure why you looked for a special board to do it when a TP4056 provides similar results and on the slightly more expensive boards it actually has battery protection for as little as 30 cents, I'd say that's the better route to go unless you need more power/bigger battery.
@vgamesx1 2 роки тому
@@embededfabrication4482 It's similar to a liner regulator, it feeds the battery as much as it can provide and as the voltage increases past 4.2v it'll burn that excess power as heat, so yes about the same as plugging in usb, the only downside is it has an absolute maximum of 8V input so that somewhat limits your panel options especially if you want to be able to charge in lower amounts of light.
@vgamesx1 2 роки тому
@@embededfabrication4482 Yes but very unnecessary, it depends on your module of course but as far as I'm aware it'll work perfectly fine all the way down to 2.7v (so completely drained) with 3.3v being typical.
@matuspospisil 5 років тому
ANOTHER VIDEO!!!!! I'm so Happy!!!
@TheAnirudha1990 5 років тому
Great job scott.. i was waiting for this video.
@nosafetyswitch9378 3 роки тому
Nice project. I also spent a couple weeks building my own MPPT charge controller using this chip and it works pretty well. I get 80% efficiency at around 10W input power and a bit less, 75% ish at higher power like 15W+. I am using a 20W panel. If you have lower then expected efficiency, it is important to note that the input capacitor ESR and the inductor DCR are very important as I discovered (!) so keep these as low as possible!
@samsoo2785 Рік тому
Can u please mention Al components and circuit diagram asap?
@nosafetyswitch9378 Рік тому
@Sam Soo I have a feeling that if I do, I will see my design for sale on Aliexpress in a couple of weeks😂 Let me know if we can discuss this via email.
@zaneenaz4962 Рік тому
@@nosafetyswitch9378 ...so you have my curiosity. your channel doesn't seem to have any content so i'm puzzled by your offer to share designs. my personal feeling is that these types of units should be designed to accumulate charges and then pulse charge, or better discharge into the battery in cascading manner. The 60%+ efficiency of this video shows there is room for more creativity. cheers
@nosafetyswitch9378 Рік тому
@Zane Enaz hi, I haven't uploaded any videos yet unfortunately, who knows maybe one day. I just thought I d share my thoughts. I now want to charge my 10cell ebuke battery and i am actually considering whether it is worth adding those modules in series or start a new design with a chip that can charge 10 cells but those are not very easy to come by...
@zaneenaz4962 Рік тому
@@nosafetyswitch9378 ..could you share your design with me ?
@-indeed8285 5 років тому
DIY OR BUY next video request. make a keyboard with arduino.
@ahsanmasood846 5 років тому
Please keep throwing videos like this on batteries, charging circuits and solars every once in a while. Question, what's the max current that I can expect from a single cell li-ion/lipo with a 5V boost from some good circuit?
@KirillStolyarov 3 роки тому
Hi, great project, you saved me the time, thank you. Does it replace mppt with fixed PV voltage instead of real tracking?
@jasonmhite 5 років тому
As a followup, you should do a solar charging board for supercapacitors. I've been interested in making a low power sensor using a pair of the cheap 2.7V supercaps you can get as a reservoir, but I'm struggling to find a good IC for charging supercaps from solar.
@greatscottlab 5 років тому
I will see what I can do
@jasonmhite 5 років тому
@@greatscottlab Thanks for at least considering it!
@polarijet 5 років тому
Lipo charger works just fine for the supercaps. I replaced a lipo battery in my dashcam with a pair of 2.7V supercaps and the charging circuit in the camera handles them just fine. Maybe you'll want to add zeners in parallel to each cap to keep the voltage below 2.7V in case they become unbalanced.
@jasonmhite 5 років тому
@@polarijet Yeah, TI has a really nice chip for doing this (the BQ24650) that integrates a boost converter and MPPT controller etc. I've just been stuck on 1) having a chance to lay out a PCB for it and adjusting all the values for supercaps and 2) figuring out protection and stuff for the supercaps. Having a hard time finding a coherent explanation of what is required to charge them properly, especially in series.
@joopterwijn 5 років тому
Just noticed... 31K to go,.... (~8 vids or so) 😮 found your channel around the 60K ...keep up the great work!
@r0_ 5 років тому
30,010
@greatscottlab 5 років тому
Thanks for watching :-)
@badraa7838 5 років тому
The diy version looks so professional
@zinodan 5 років тому
great vid, would be nice to see a video about wind energy too! the charge controller for it should be a little bit more challenging for you
@clbgrmn 5 років тому
For these DIY vs Buy videos, can you consider/discuss why the manufacturers would exclude some of the feature you deem necessary?
@raik1766 Рік тому
Money
@mobzi2644 5 років тому
JLCPCB.... only 2 dollar... + 20 dollars delivery to Europe.. why you never mention it?..
@Twometer 5 років тому
With regular mail instead of DHL Express you have a lot less shipping costs
@jaro6985 5 років тому
@mobzi264, yeah its a bit disingenuous to say "boards shipped for $2" when the shipping cost is about 10 times that amount. @Twometer I don't think he would get them in a few days if regular mail was used? Also to many countries they don't offer regular mail any more, DHL only.
@Twometer 5 років тому
@@jaro6985 no provably not in a few days.. also I really did not know some countries don't support regular mail
@RichardVowles 5 років тому
He lives in Germany, presumably he is using standard post. In other videos he says 7-10 days, which is pretty standard.
@mobzi2644 5 років тому
Yeah regular post would have been cheaper if available... Here, to France, for a 1.76€ board (2$) its a minimum of 16€ shipping in 7-20 days, and 19€ for DHL express. There is no "cheap and i'll wait" option like in other chinese website (Bangood, whish, aliexpress, ...)
@duanejohnston8982 3 роки тому
I Agree DIY sounds like the better option here. Going to use this example to build my own solar charger for a 3 cell Li-Ion!
@RickTizzy 5 років тому
Thanks for another awesome project and result! Even though 62% is not fantastic, the whole is still better than anything out there at the moment for single cell use. Will definitely have a look at the instructable to see if my rather limited skills will be able to cope building some of them ;-) I defintely agree with the potentiometer option, that would be even more awesome!
@blackturbine 5 років тому
How is your comment a day old and video is few hour's old Edit minutes old
@nickstanley5064 5 років тому
@@blackturbine ,Great Scott's Patreon supporters get early access to his videos
@blackturbine 5 років тому
@@nickstanley5064 oh I didn't know that Thanks for clarifying
@KACPER050599 5 років тому
There are off-the-shelf cn3791 solar chargers on aliexpress for around 3.5$
@greatscottlab 5 років тому
What? Dammit!
@jorgetucson8196 5 років тому
Link?
@DANGERTIM112 5 років тому
seems this video needs a part 2 where those are tested in comparison with your DIY one
@KACPER050599 5 років тому
www.aliexpress .com/wholesale?minPrice=&maxPrice=&isBigSale=n&isFreeShip=y&isNew=n&isFavorite=n&shipFromCountry=&shipCompanies=&SearchText=mppt+lithium&CatId=0&g=y&SortType=price_asc&initiative_id=AS_20181209075824&needQuery=n&groupsort=1 here
@jorgetucson8196 5 років тому
@@KACPER050599 thxs
@srinivasraor770 5 років тому
for small projects DIY is very useful thanks for the video again
@houseofelectronics5869 5 років тому
Hey Scott nice video! What are your thoughts on a 3D pen? Can it be a cheap alternative for a 3d printer for making small enclosures for electronics?
@SripalTAD 5 років тому
I use tp4056 for solar charging my lithium cells. I am surprised how good is tp4056 with 6v panels
@Luke-san 5 років тому
Andreas also tested this. I also believe that with very small panels it is better to use something very very simple. You waste too much energy in the circuit itself.
@SripalTAD 5 років тому
@@Luke-san they make great solar led light for garden. I made one with tp4056 protected module and a Ldr circuit (light detection) between cell and led.
@SindicatoLinux 5 років тому
"PROFESSIONALLY INSTALLED" LoL
@cecilcooper6210 4 роки тому
Always enjoy your videos. So Informative.
@VikMKW 5 років тому
Incredible job Scott!
@achintsingh210 5 років тому
Could you please share the schematic of the circuit ?
@duncyy7471 5 років тому
did you look in the description? there is an easyeda link with the schematic and pcb layout.
@MyTubeSVp 5 років тому
He made plenty of pcb’s. Just buy one off him.
@achintsingh210 5 років тому
@@duncyy7471 ok Thanks
@varunr9231 5 років тому
Bro video a about e-paper display please.
@greatscottlab 5 років тому
It is on my to do list
@varunr9231 5 років тому
You are a osam youtuber and great video in your channel
@BlazeOGlory 5 років тому
You are like the German Tony Stark! Top notch project.
@grgetcil 3 роки тому
Great Scot! what a fantastic video. I wish all DIY projects measure up to your standards. I do not know if i could get all these components in India. But perhaps I must scout around. 1,4 Million subcribers is truly a great way to Go!
@TheChemicalWorkshop 5 років тому
"JLC-PCB" i ordered from them too, yes 2$ but 6$ for 1 month shipping and 30$ for 3-4 days shipping...
@SupremeRuleroftheWorld 5 років тому
or buy board for 35 bucks and free shipping...
@TheChemicalWorkshop 5 років тому
@@SupremeRuleroftheWorld yepp, the Ad is kinda BS to me, i mean cheap but not that cheap... also i hope the quality is okay... i might do a mini "review" not beacuse i care but beacuse i hear "JLC-PCB" 100x a day...
@tad2021 5 років тому
I batch my PCB orders as well as combine with parts, makes the shipping cost easier. Plus and domestic fabs cost at least 2-300 times more with longer lead times. I can walk a block for my office and get a 10x10cm panel made for $200 each with a 2+ week lead time... or I can import 10 or more from China within a week for under $30. It's stupid that the later is the better option.
@cedmanotro 5 років тому
Adafruit.com they have nice boards for that and tons of other stuff too
@piefadaseyt7893 5 років тому
They 're great but not budget friendly i think
@manutwo_9387 5 років тому
Sehr informatives Video, Danke
@deangreenhough3479 5 років тому
Another cool project. Great video thanks 🏴👍
@sayantanmaiti2513 5 років тому
But why did you get that poor efficiency at 10:20? Anyways great video as always!
@colhany 5 років тому
There are a lot of variables here, it might be the light or the efficiency of the panel itself I'm pretty sure this is not how efficiency is really measured correctly.. He just does what he can, but he doesn't have like solar panel testing equipment you know.
@tuomaskinnunen8981 5 років тому
It seems that the "MPPT" that he used was not actually tracking the maximum power point, but rather fixed to a voltage that should be close to the real MPP. "Real MPPT" would find the right voltage automatically without setting any hard coded value, and it would adjust it appropriately when there are changes to the light.
@Jadinandrews 5 років тому
@@tuomaskinnunen8981 Good point, I think you are right. I'm guessing that this dumb MPPT controller is at least better than a PWM based unit, but you would have to adjust it carefully for a specific solar panel.
@RobertShaverOfAustin 5 років тому
@Tuomas Kinnunen: I think the two resistors, R8 & R9, are selected by the engineer to match the specified voltage specified for the solar panel in ideal conditions. The regulator then changes the output voltage of the buck converter to optimize the current being fed into the battery so that it is receiving the maximum current the solar panel is capable of supplying based on it's the current operating conditions; solar radiance and temperature. There's more to it than that. Here are a couple of useful links. All About Maximum Power Point Tracking (MPPT) Solar Charge Controllers: ( www.solar-electric.com/learning-center/batteries-and-charging/mppt-solar-charge-controllers.html ) Data sheet for 4A, Standalone Li-ion Battery Charger IC With Photovoltaic Cell MPPT Function CN3791: ( www.consonance-elec.com/pdf/datasheet/DSE-CN3791.pdf )
@Jadinandrews 5 років тому
@@RobertShaverOfAustin the point is that it's not 'tracking' the maximum power point, it's chosen with those resistors and doesn't change once set. The problem with this is that the maximum power point is dependant on so many factors, it changes throughout the day.
@luongmaihunggia 5 років тому
What are the odd, I've trying to find a solar charger for li-ion battery recently. Are you spying on me?
@greatscottlab 5 років тому
Yes.....
@luongmaihunggia 5 років тому
@@greatscottlab *insert surprised pikachu here*
@duncyy7471 5 років тому
He is also spying on me. i have had this multiple times. I look at a solar tracker, 1 week later Scott has a vid of it. I look at diy esc, 1 week later Scott has a vid of it...... same with the battery pack, mistmaker, arc lighter, and a few more. mmmmm, suspicious.
@omkardedge3776 5 років тому
Hoping to see a million and more subscribers, videos are best..just loved it..
@mrjn6940 5 років тому
congrats mr great scott for 970,044 subscribers hope someday make a high power amplifier.
@holetoanotheruniverse4690 5 років тому
You can sell those as Kit
@lazardjukovic1691 5 років тому
*INCLUDES PAID PROMOTION* Of course it does.
@mesharial6676 5 років тому
I don't see how that would influence the results.
@lazardjukovic1691 5 років тому
@@mesharial6676 neither do i its just a joke mate
@anthonykaruri 5 років тому
Interesting I was looking for a way to power esp 8266 and a soil moisture sensor in some grow bag project I am planning on soon. Was contemplating connecting tp4056 directly to the solar panel. But this is definitely a neater way!
@mrnick7938 5 років тому
Love your videos sir! Keep them up!!
@rootvalley2 5 років тому
I like to use lipos that have over/under volt protection built in, a lot of batts have this, cell phone batts for instance usually do.
@eduardorodela9307 5 років тому
Ah great video and project. I feel inspired.
@xfcisco 5 років тому
and thanks for the best electronic videos ever !
@stanleykubrick8786 20 днів тому
What I think is that I'm amazed that you can order this kind of circuit, typically for outdoor gardening applications from any big box store and there you have it, battery, solar panel and circuit, complete. You make a great instructable video but for some applications striping apart a ready-made commercial sollution might just do the job.
@mickgatz214 3 роки тому
I am experimenting with a Solar Charge Booster. :) Great Video, Great Scott.....
@acestudioscouk-Ace-G0ACE 3 роки тому
This is very informative and useful. Thank-you.
@cecilwhitcomb8627 2 роки тому
Hi "Great Scott" . I love your attention to detail and the way you've worked through the options. I have use for this last iteration: CN3791. Is there any way to purchase it already assembled? (Apart from JLCPCB)
@viktor1772 3 роки тому
Hi Scott, I've been watching your video and schematics and i thing that it is such a great work, thanks for sharing and congratulations for a very well explained videos! Having a look of the schematic for this Li-Po solar charger and driver, i have the following question: Would not be better to include the resistor R4 (shunt) just before P3 terminal block? This allow you to measure the current straight to the battery, due to as I have interpreted now shunt resistor is measuring both current to the battery and to the load, so charger cannot know wether the battery has been fully charged or the load is consuming current. On the other hand, there is a option to isolate charger and load with an Or-ing made of transistors or diodes, Have you considered this as an option when you designed this circuit?, why did you not include them into schematics?, is it better to not include this kind of circuitry?. Thanks for your videos, I look forward hearing from you!
@devrim-oguz 5 років тому
Wow, the microscope video is so good and crisp :O
GreatScott!
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