Fancy 1-8 cell lithium battery level indicator

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Information Fancy 1-8 cell lithium battery level indicator

Title	:	Fancy 1-8 cell lithium battery level indicator
Lasting	:	7.03
Date of publication	:
Views	:	66 rb

There is one problem here with the indicator : The LED s are continuously on whether you are charging or discharging the batteryWhich means,even after unplugging the charger, LED s will be on draining the battery Do correct me if I am wrong Thank you
Comment from : Manu Sudha

Thanks for the video I saw this battery level indicator, or something very much like it, on Think Robotics' website with SKU ELC2003 Did you get that indicator from Think Robotics?
Comment from : Kyrollos0

I have one that can measure up to 8s lipo, showing voltage display scrolling via 3 7 segment displays and can warn (very loud beeper) if battery voltage is below a set voltage, I would love to see it back engineered by you Clive Great Video as always thanks
Comment from : And Chips

A universal version would have two potentiometers to set high and low thresholds
Comment from : cmyanmar13

Surprised that they didn't just use 3 jumpers binary for 0-7 (Number of cells - 1) Would have had the same encoding with fewer parts and no likeliness for bad jumper combinations
Comment from : Glenn Brockett

BC: You mention a missed trick in displaying an overcharge condition by blinking the 4 bars How would the schematic change to allow for this or would it be done with software in the MCU?
Comment from : Howard Roark

Took me 3 minutes to realise my phone was displaying the video upside down
Comment from : G Quizzle

Now I can add this feature to the lower grade Ryobi One packs
Comment from : Keith Jurena

I do like the option to change
Comment from : Andrew Lofthouse

Cool 😎little module 👍🇮🇪💚🙏🏼🔋
Comment from : keith king

I can't help noticing that there is one apparently unused pin on that chip, which makes me wonder if the IC itself might actually have some extra functionality which just wasn't actually implemented by this particular board It would be interesting to monitor that pin and see if it does anything interesting as voltages change
Comment from : Foogod

Would it of been possible to make one with a 2 digit lcd display to display it in a percentage?
Comment from : Andrew UK

Could have made it binary too Just imagine, 32 levels of charge! Useless, but annoying to non-techies Remember, there's only 10 kinds of people in the world!
Comment from : Jim Muehlberg

Very similar to what I did with an Atmel TINY85 microcontroller Used Green/Yellow/Orange/Red LEDs is sequence to indicate the state of charge of a 3 cell battery pack running a Raspberry Pi, and with a critical low charge output to initiate a graceful shutdown of the Pi
Comment from : neilshep50

Its a shame that this battery level display unit doesn't go up to monitoring 9 cells at 36v dc which would be quite a common battery pack voltage, unless you can modify the unit to do so
Comment from : Tyrone Nelson

IVE BEEN LOOKING FOR SOMETHING LIKE THIS FOREVER I build custom guitars and my signature thing is putting a rechargeable battery in the guitar chargeable via type c directly into the instrument Would LOVE to have a indicator built into to the back of it!!!!
Comment from : RapidShadow

Super bro 👍br#TheProjectLab
Comment from : The Project Lab

Any idea what micro controller these companies use? I am working on a project and am using an ATTiny85 and wonder if what they use could be better or cheaper
Comment from : David Ro

I think that the voltage divider could be slightly easier and cheaper to manufacture if the top row of the resistors would be in series instead of in parallel This way it could be made with a 10k resistor and a bunch of 20k resistors or even with just 10k resistors instead of a bunch of different resistor values
Comment from : phyotyla

Idea for future video To tear down "analog" LCD tablet with clear button It has a little PCB inside with voltage booster that clear the LCD I couldn't find any video of any of them disassembled brI opened mine because the button stopped clearing the screen, even though the battery voltage is ok Turns out it exceeded battery current capability (15mA) when spiking voltage brTo open the device the screen has to be simply pulled off
Comment from : dzid_

It seems simple enough Happy New Year! Good luck👍
Comment from : d t

Just checking the voltage of battery without load cannot indicate battery capacity Share any true battery capacity indicator if you know
Comment from : My Music4U

Brilliant Clive you could sell your ring bound notepad of investigations for many hundreds of pounds
Comment from : Mike5

'potentially being overcharged' love it
Comment from : dopiaza2006

Brilliant bit of kit I have a use for one of them thanks Clive
Comment from : Cucumber Man

How about for 13s?
Comment from : Mr Techie

Some linear voltage regulators aren't so Linear Some of them are just a poor man's switchmode power supplies within the tiny packages Obviously a true SMPS voltage regulator now exist in the same transistor package as this voltage regulator on the battery life indicator, with all the whizbangs on a single die - some CPUs have the same stuff on-die nowadays due to the differing logic voltage islands such as CPU Vcore rails (Intel is one of the companies that makes the processors with built-in switchmode voltage regulators)
Comment from : Donovan Lavinder

The Clive, I have a question, when you have a discharge resistor across a capacitor, does it not almost entirely negate the effect of the capacitor, so much as to be useless, or, could not a lower value be used in its place, or, if one is used early in a circuit, should not an inductor be placed somewhere after it to maintain any dropout which might be caused by said resistor 👀 or am I being stupid
Comment from : Phonotical

And of course, one can be clever and use parallel combinations of the resistors to work with other types of cell like NiMH
Comment from : Mike H

Do you have a link where can these be purchased?
Comment from : Gadgets Lab

"Hey, Who turned out the lights?"
Comment from : JaMaMaa1

I've always hated the way the actual indicator looks I put bluetooth stereos in weird things That sci-fi battery rarely matches aesthetically I could probably use this and port out my own LEDs duh
Comment from : invaderkendall

I always like a good schemematic
Comment from : Bo Dan

Now if only it had its own pressure switch for momentary-on Just push the indicator down to read the voltage
Comment from : agvulpine

Any chance of an affiliate link Clive so you can make a few pennies on my next purchase?
Comment from : Derry ONeill

With the single shared 560R for the four bars, does the brightness change noticeably with the number of lit bars? Or is the micro-controller actually only lighting one at a time so that they each see 25 duty cycle, regardless of how many neighbours are lit?
Comment from : Chris L

@bigclivedotcom the xw015nfr4 might be worth having a look at as well, seems to auto sense 1s to 4s
Comment from : Xfixiateher

I think I might buy one or two of these little devices Thanks
Comment from : Terry C

How to hack it to use as car battery voltage indicator?
Comment from : Vein1986

Cool
Comment from : weerobot

I bought some of these exact ones off of Ebay, there was only the 2 wires for connecting only one battery and they were all being sold as a 37v 18650 battery meter
Comment from : Darryl Kinslow

Nice update compared to the other onebrBut which has the lower consumption?
Comment from : Damien Drouart

Anyone have a link of where to buy?
Comment from : Russell Delaney

I bought one of those and a 3s bms for use in a 12V lithium pack, does that mean I have to "short" the 3rd resistor to tune it for my pack? All I need now is a good DIY spot welder, got any idea/video showing how to and not to build one, I really would like your advise on that one ClivebrPs how much power do that indicator use and should I put it on a momentary switch to avoid the discharging?
Comment from : A

In the "features that would have been nice" category, I'd put a DW01 or something like that to kill the circuit if the voltage drops too low Those red LEDs could easily pull the voltage below 2v
Comment from : Ted McFadden

Happy gregorian calendar incremental ascension daytad late'
Comment from : Patrick Lyons

I can only guess that if you connect eight cells to this and falsely programming it, it'll fry the microcontroller?
Comment from : Roy Sigurd Karlsbakk

Happy new year, Clive! I've just backed you on Patreon
Comment from : Gunnar Roxen

I wonder if you could wire it to an 8 way switch so that you could adjust it depending on how many batteries you wanted to charge in a multi bank charging rack
Comment from : User User

Happy new year dood…………………
Comment from : Ten Minute Tokyo 2

Hehe coilwhine is a biatch 😀brOther than that, this reminds me of the battery indicators built in to power tool batteries like drill or impact screwdrivers
Comment from : Marcel Lipovsky

Could you check out the "HW-586 Capacity Tester Meter Li-ion Lithium Battery" it is just a couple bucks more but seems to have so many more features like capacity testing and such ;)
Comment from : nico nico

Is the nice lady there? brI-I-I Ice cream, ice cream brHey, who turned out the lights?
Comment from : ImmortalAbsol

If it was me I think I would have had a transistor on the last o/p that actually switched the red outline on when the battery was flat!
Comment from : wino99999

I love your videos ClivebrLooks like they are keeping 15 low to 21 volts max charge on the ADC pin Hope people read the instructions before using more than one cell
Comment from : Tims Projects

I think the led is OK I could be wrong but I think I had a batt charger that hat a LCD bargraph maybe you can get one of those to show off Might of been over 5 years ago on the energizer aa charger I don't think I have one at the moment But I did make a big version for arduino on someone programmed code on the display
Comment from : CraftyMulligar

5:47 Did you try? The micro can't see which programming resistor is connected I bet the chip is just a 21V bar graph with a big offset
Comment from : A bit of a bit of a bit

It would be interesting to see you try to recreate something youve reverse engineered, something that doesnt need specific programming you dont have access to or some such of course
Comment from : DigitalIP

nice thank you
Comment from : j s

Reminds me of one of those LED 7 Segment displays
Comment from : Daemi Ax

4 off E96 series resistors That's a bit unusual
Comment from : Gordon Lawrence

Is this how the baby indicators work in baby monitors?
Comment from : Curtis Hoffmann

Are you certain this will work on Lithium batteries? I was lead to believe they give a linear voltage output until they switch off, unlike agm/lead acid?
Comment from : Pugwash

How long does it take to charge a 12v battery at that rate?
Comment from : Dirty Plumbus

"Hey Who turned out the lights?"
Comment from : D S

just used my first recycled vape lipo thanks to you Stuck it on an esp32 with a neopixel ring and flashed with wledlasts a good few hours on 50 brightness :) Next vape i find Im going to make my newly acquired novelty desktop henry, rechargable usb-c lol
Comment from : letmelooktv

Do they make an LCD panel voltmeter this small?
Comment from : PicoNano

Just like the one I use on my photon cannon 😂
Comment from : Eric Willis

I was frightened by circuit, but when you explain it, felt so easy brThanks
Comment from : ചിം ചും ഇയായി

And that's fine, if your resistors are in specification, I had one similar and not one of the resistors put in the board werewhat was marked on the board itself, as a result it was 30 off, I changed every single one and now its within 5
Comment from : Phonotical

Happy New year Clive, will you be getting the ones that display a percentage instead of 4 leds next ???????? :-)
Comment from : Fred Flintstone

Is this the up-date to those batteries that had a button on the side that when pushed perported to show how much charge was left? Did you ever "Do", one of these?
Comment from : Frank Tuckwell

Hm, no cap(s) close to the regulator? That might give it a nice swingbrbrBTW, datasheet says 1microF in input and output
Comment from : From Germany

I wish those things had more than four bars Probably silly of me
Comment from : markiangooley

Aha, the cink palculator…
Comment from : Rubbishcop

Needs to be pink
Comment from : j5

Wonder if it is multiplexing the green led bars, given 1 resistor for all 4brThe intensity seems unaffected by how many are on, suggesting they are doing it
Comment from : Uncle Duncans Shack

Thank you so much, i was trying to find something like this
Comment from : User

I don’t understand half this stuff, but still love the videos 😂
Comment from : Q D

how do I make one for a 10s battery?
Comment from : Max Kielbasa

I know more than I need to, todaybrThats what makes tomorrow funbrHappy News Year BigC xox
Comment from : x

I usually just lick the end to see how full they are - tend to be a bit floppy if fully discharged
Comment from : CyberWomble

Happy New Year Clive
Comment from : goingjag

Thanks, Clive 😁
Comment from : Bob Mosavo

And A happy new year to you sir 🥃👍
Comment from : Philip Haigh

Früh morgens wünschte ich du würdest etwas "sprechen" ;) greetz
Comment from : Christian Meyer

One thing that the mfg could've considered was making the battery outline have a 1Hz flash rate when the final battery bar was cut out for being below threshold and serve as a indication to recharge the battery
Comment from : Falkreath Guard Gaming

Thanks Clive, always great to see and hear your investigations of the electronics out there
Comment from : Tom Metcalfe

So frequently now I pull the lever on my easy chair and let you teach and entertain---that's relaxation!brHappy New Year, many thanks for your easily digestible material senior from Canada
Comment from : Bill Ide