TP4056 with more power! - 12v Solar Shed
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- เผยแพร่เมื่อ 7 ม.ค. 2017
- TP4056's are all over the place. It's no surprise as the modules are as cheap as chips. They do a good job of charging lithium ion cells too, respecting the constant current and constant voltage profiles. They also do a sensible pre-charge and have a good termination current. The only issue is that they are limited to one amp of charge current.
In this video I look at a TP4056 module that allows for more than a 1 amp output.
Items used in this video:
❗️These links are affiliated and I may earn a small commission if you purchase❗️
TP4056 High Current Lithium Ion Charger: goo.gl/RGubXE
Ferrule Bootlace Crimping Set: goo.gl/YIq1yc
Portapow Premium DC/USB Meter: amzn.to/2eWIOrK
I have also uploaded an update video which highlights a few issues with this module after further testing: • High Current TP4056 Mo... - วิทยาศาสตร์และเทคโนโลยี
As a general rule of thumb you should always thermal couple parallel circuits of semi conductors to avoid a thermal runaway of one of those.
Great timing. I just bought 5 of these a week ago and haven't even taken them out of the packaging yet (the first board you showed). I also bought a 2A charger based on the LI4001 which seems to work very well.
The original TP4056 modules are super cheap and do a pretty good job at charging lithium ion - the version with undervolt protection is great to put in projects. This high powered version does have a design issue I'm looking at - hope to do a short update video soon.
Awesome voice accent!!! like cricket commentary! very ear pleasing, indeed, along with the beautiful presentation of project.
The 'woon' point five resister gives a 'courent' of...
Thanks, this might be a solution to my problem. Bought one
Thanks m8! :) Very helpful!
Not sure if this video is in direct response to my comment on your previous video, but either way, I enjoyed the video and I will be patiently waiting for more like this.
Cheers
+lonnie776 Glad you enjoyed it. :-)
Thanks for you video.I will try it.Now how do we trick it to only charge to 4.1 volts?
Nice info, thanks for sharing, like it :)
Those diodes are there to take some power dissipation from the IC's, which are linear devices. Smaller the voltage differential between input/output, less power the chip has to dissipate at exactly the same output current. I like to use a resistor for that purpose because the drop on it is proportional to the current which allows me to drop 0.5V on it while the TP4056 is in CC mode and drop much less than that when the chip switches to CV mode. On top of that, power resistors are pretty good at pissing away power as heat LOL
It's funny I've never noticed the standard TP4056 modules getting warm - I'll have to check one now. Some heatsinking may be necessary if I use this again. Cheers for the explanation.
Interesting. So at 1Amp charge and 5V input and a cell voltage of 3V they would dissipate 2 Watts ... wow.
Yes, by dropping, let's say, 0.5V on a resistor you would shave off one quarter of a watt from the power dissipation on the chip.
Great video..… but I am looking for a "Lithium Cell Charger Module with Battery Protection board" that would output a 18V system..... any thoughts????
I wonder if you could help, I have a solar security light but in the winter it's barely charging. It uses a single 18650 2200mah battery pack. I was hoping to extend the charging by adding another 5.5v large solar panel, wire this to a tp4056, then also connect this to the battery. I am not sure if this will cause a problem though, since the internal circuit of the security light also has a charging function. I'm really just looking for a way to get more juice to the battery in the winter. Thanks!
Hey I've been thinking about building a UPS/pass-through style charging module with tp4056 simply by allowing the load and the charge supply to be connected continuously. My application can then be powered from the battery and the cells (3-4 in parallel) can then be charged when power is connected to the charger. I thought that since my external supply current is limited then by the charger, this 4x tp4056 seems like a good solution.
I can potentially get up to 2A safely through the charger continuously and 2A out of the pack provided I have 2 or more 18650s in parallel. So switch-mode losses aside, I should be able to build a 5v USB power pack with pass-thgouth that serves as a UPS for say a small pi or similar USB-powered micro-computer. 2A 10W in and 2A 10W out.
What do you think?
What problems can you foresee with this idea?
I'm most concerned with this-
Under a load that draws less current than the charger (~2A) I'm expecting the charger to power the application and the battery cells to not deplete. However I know that the voltage drop will likely send the charger into the CC charge mode. Now this is kinda required because in CV mode the charger won't let enough current flow across the cells into my application circuit. but I'm also a little worried that perhaps the charger will never leave the CC charge mode because the voltage across the cells will always remain below ~4.2v (1) when there is no external power (battery backup mode) and (2) when there is a external supply (normal/charge operation). Is this a real problem or will I be fine?
The heat sinks getting warm is quite normal, it's their job to get warm. As long as you can tooch them, no prooblem.
Adam. Are you going to find some of those small stick on heatsinks to easc mosfet? I ordered 50. Very cheap. Work well
The goal was to achieve greater than 1A output from the TP4056 board. Did I miss the part where you told us how many of the 2.3 amps from the single board (4 x TP4056 ) were destined to charge each of the three batteries in parallel? not wanting to exceed the capacity amps to one battery, insert 3 batteries to make sure to get the most out of the TP4056 (why not insert 2 batteries?). I don't know what the following means "pin 4 is VCC and pin 8 is chip enable so both are pulled high" and is it correct for pins 4 & 8 connect to pos (on far left) while the LED connects to pins 6 & 7 ? why don't 6 & 7 get input on the 2nd, 3rd and 4th parallel connected TP4056?
this board is only for charging batteries, how can i add 3amp discharging protection? i have 3 amp led strip load on 18650
Can you put a link to the item you introduce at 1:00 in the description. Thanks for the info.
Can't I use regular TP4056 in parallal with multiple batteries, like this set up but just four wired together? I saw someone with a curcuit with 8 wired together with 8 batteries.
Nice! I wonder what the singular modules output are? I mean if you can parallel them up as I five of those to make a charger i think welldone tips uploaded...
Yeah it's 1amp! Though total max volt input is 8V.
I would like to use this charger but with LiFePO4 batteries that have charge voltage 3.6 instead of 4.2V. I know that using diodes I could lower the voltage but is that enough? How would you do it?
As I found with the diodes on the input - they'd get very warm. They'll be dropping voltage at a reasonably high current.
I'd find something more suitable... goo.gl/WkO0HX for a 1 amp version. goo.gl/TVM0Bt for a 2 amp version.
My tp 4056charging modules red led never sunt off after I charged 3hours, 🙏plz tal me why it's countnusely charge and never stop with 2000mah lithium battery??
I’ve obtained several battery packs that are made of 32 cells. 8s4p. They are 26650 cells
And are LiFe PO4. There are no Bms boards. Only. Red and black leads. They are are
Reading about 26.3 volts. Label says 12.8 Ah. Question: How can I best use these?
Test them? Charge them? There are many... A pallet full. Each pack about the
Size and weight of a brick... they are shrink wrapped.
hi did you want to check the tp5000 up to 2A switching li ion/po and lifepo4 charger
+playdav485 I will. Thanks.
Yes approx US$2.10 each on ebay
Short the unpopulated SMD resistor pads to switch from 3.6V LiFePO4 to 4.2V Li Ion
Thank you - I ordered one last night to have a play with.
the schotsky diode is for reverse polarity protection ???
Nice one! But I would love to see a TP4056 to charge packs of cells. :)
I've had this charging 8 18650s in parallel, but obviously its not setup for series packs. In fact if you wanted to use multiple TP4056 modules to charge series packs you need isolated power supplies as the negative is common across the module. Plug two modules connected to two packs into the same power supply and you'll create a short!
Adam Welch Wait, what you mean? Didn't got the short thing. Because you can make, for example, a charger for multiple cells, connecting the imput power in parallel (and one TP4056 to each cell, of course). I'm going to make one like this myself (for 6 cells at once), just need to find a suitable plastic box. :)
Adam Welch About creating a pack, one idea I had is, for example... Using 3 cells and 3 TP4056, each TP4056 connected to one cell (isolated, of course), connecting the input in parallel (so you can plug one TP4056 and charge all of them at once) and, then, connect the TP4056's output in series. That would absolutely work, but it's a bit of a overkill...
How many times can you stack them?
How much is that 4 tp4056 in 1 module?Compare to a single tp4056
If 4 of them get quite hot... imagine just one LOL
I suggest hooking it up to the scope as I'd expect the outputs to be all over the place. As far as I understand to measure the cell it has to pulse the output off and read cell voltage momentarily. As the chargers have no form of sync would expect this to be happening out of sync so no one charger can ever read true cell voltage so cut off CC/CV swap etc will be all over place.
+James Tutton Thanks. It may be worth an investigation.
So .... did it blow ? How long did you run it for ?
Nothing has blown. I'm looking again at this after a couple of people commented asking about it's voltage regulation. I think a short explanation video might be in order when I have the footage.
how do i charge a 12 LiFe AGM battery ?
Makes one wonder if you can parallel the regular TP4056 modules to get a higher charge rate...
Yes, although I've not done it it should be fine.
Yes, I've put 10x TP4056 in parallel and works just fine (10A charging)
CheapVlog In that case, wouldn't you be able to parallel tp4056s on a lower wall and achieve auto balancing plus over discharge protection? Would seem like it might be a fairly inexpensive protection solution.
I have the exact same single TP4056 module you showed but it never appears to finish the charge, it just keeps hovering at 4.07V :(
I can imagine that the TP4056's might get confused. As there are a few in parrallel they may read the voltage a bit high and terminate so soon. They're not really designed for this I don't think. I'll run some cells on mine for a bit longer and see if I have the same issue. Thanks for your comment.
It may be just this single module that's off - waiting for a few more to come in so I can do more testing.
Can I link a solar panel to this to have constant charge of a battery?
Andreas Spiess has looked at this this week. Check his video.
Thats roughly 750mah per cel??
Damm liner type regulator
I got this same board off of eBay and all it did was get very hot so hot I unhooked it and labeled it junk it now sits in my junk drawer ( I don't want to start a fire and burn down my house )
Just got the sake of it, why not stick a heatsink across the top of all the TP4056s and put a fan next to the board?
Adams finger test (unless he has asbestos fingers) suggest a temperature of less than 60DegC....mini heat sink, maybe. Fan? A bit OTT in my view!
Did they voltage limit properly at 4.2V?
This is probably a glaring omission in the video isn't it? Your the second person to ask! I will have to double check this. Originally I couldn't think why it wouldn't but then last night I was thinking about the four independent chips and how each of them is probably going to have to stop charging to detect the cell voltage periodically. I might try and put it to the test tonight.
I was thinking: when they're current limiting, putting them in parallel seems ok, because they're current sources. But when they switch to constant voltage - it's like putting voltage regulators in parallel
I'll have a play and see what I can find. Cheers
Yes, in fact it does work perfectly. im charging 2x 18650 (Sony VTC6) without any issues, the charge terminates at 4.18 at minimum, mostly 4.20. Although this requires a lot of cooling and is really inefficent when it comes to charging large capacity bank. Check out the TP5000 modules on ebay, another good video idea / review :)
The idea is pretty good but I'm not sure if the tolerance on these TP4056 and all the other components, current limiting resistor particular, doesn't kill the efficiency. Why are there actually diodes .... need to take a look at the spec sheet of that thing to see if they are really needed.
Mr Johhhnnnyyy suggests it's to drop a bit of voltage as the TP4056's are linear devices. I think that's a good shout as they were getting warm as it was!
I wouldn't leave this board alone or at least put it in a fire-proof container (I use a stone soup-cup :D)
A Schottky diode will operate fine up to well above 100DegC Whats going to catch fire?
Simon Jowett if the hot chip on the board accidentally lies against some piece of paper it could catch fire I'm thinking
I think some caution is sensible. They always say you shouldn't leave lithium cells charging unattended anyway. I may do some further testing. The schottky's are dissipating a little less than half a watt at the boards full power, but the TP4056's are also dropping some voltage too - in fact more voltage when the current is highest. I'm going to have to look at a standard board and see how much heat is generated on those - I've never noticed anything excessive.
***** The only thing I leave charging overnight or when away containing Lithium cells are Phones and Tablets cause its otherwise virtually imposible to have a charged device when required
Papers self ignition temperature is is 451F (remember the old 1960's film Fahrenheit 451?!) This is 233DegC - the diode would be dead well before this.
These modules are awesome! You can combine those to charge a pack of any S. Check out my review of TP4056 balance charger after 1 year of exploitation th-cam.com/video/XrSCNwitxjk/w-d-xo.html
wow, this is really NOT how this ic is supposed to be used... Ofc it is a linear regulator so it is bound to get hot cause it is dumping the input voltage difference from the bat voltage as heat so they SHOULD have included a nice long heatsink with it just to show some effort...