Separating GOOD 18650 cells from BAD ones - Battery talk #2

[@Jason.of.the.forest]

Note: do not chuck dead batteries into the trash. Recycle them please.

[@noahpalladino]

Yes! I second this. Batteries + Bulbs has locations all over the U.S. that will accept any *rechargeable* battery to recycle. They also take non rechargeable and alkaline batteries for under $2/lb. Please don't pollute!

[@joblessalex]

@@noahpalladino your local recyclers take them AND pay you in most cases. No one should charge to dispose of things. This behavior only makes people want to trash them because not only do they have to drive somewhere to get rid of em, they have to pay too!

[@dontblameme6328]

Go away wet diaper snowflake.

[@raddestkidever]

Jay Vee you are the problem

[@VanVentureNZ]

What if your nearest battery centre is 300 miles away? I am not driving 600 miles to dispose of a few batteries.

[@stevebhu8]

Your videos rapidly becoming my go to guy when it comes to anything about electric vehicles, I'm only trying to sort out a battery for electric bike but I've learnt a lot from your videos so thanks.

[@dekuramen3283]

Thank you for the awesome battery talk broh! BTW he's not bouncing, he's just vibrating at a higher frequency.

[@ranl9687]

He's going thru charging himself..Haha

[@charlschuck6]

I think he’s the flash ( Barry or what’s the name of the series the flash ) hehehe his whole body is vibrating in 120hz X10 not 60Hz hahah

[@kohjb]

Oh that's why I was getting motion sickness! Lol....

[@AlbertEspinRodriguez]

Bouncing video !!! Shake it baby, shake it !!

[@hoping67]

He reminds me of old black and white cartoons.....🤣🤣

[@Nybravest911]

Damn.. I hate to be one who seems to not be paying attention to the message but, I think your dogs had a "moment" behind your back. Anyway, you're still the man.

[@KillerkoUK]

This is actually pretty dangerous advice to put 16 cells parallel in a charger without testing them with multimeter for voltage first... if they are not at the same voltage they can get very hot very quickly without even connecting a charger to it as the highest cell will try to charge the lowest.. You should always measure the voltage if you have random unknown cells.

[@jehugarcia]

Prove it, otherwise this just opinion.

[@Ben.N]

@@jehugarcia hmm

[@al5ayyal911]

Once in parallel, cells voltage will equalize.

[@mahdixn]

the whole video is a joke, lithium ion batteries should not be charged to 100% and left for weeks, that's a recipe for destroying them, even if they're good. and his reaction to your comment is very bad, if you want proof (and if you have the courage) just put a 4.2v battery with one at 3.0v in parallel without connecting the charger and see how hot they will get. don't forget to have the necessary protection if you want to try that out.

[@johnle231]

Once the cells are in parallel and voltage charge applied, would it still try equalize I wonder

[@captainmcquirkstube8592]

DUDE! Love the dogs hiding behind you humping. LOL!!!

[@stewartbruce2409]

Dear Jehu, You teaching skills are brilliant and easy to understand, You are a great mentor to us in you tube land!! Thank you for all your tutorials. Bruce the swimmer NEW ROCHELLE N.Y.

[@silversrayleigh8980]

He's constantly wrong because of ineptitude.

[@joblessalex]

3:25 fan magically comes on.

[@JPFRIGIERI]

Well spotted... Adds to the vibrating effect everyone's decided to prioritise in the chat...

[@tomekstanek]

fairly quick way to eliminate bad cells is testing internal resistance. IMAX B6AC V2 can do it. one cell test will take 5 sec. If the resistance is ok, then next you can check capacity. Thx for video.

[@AveRage_Joe]

Ive been using the foxnovo charger, it will capacity test 4 at a time at .5 or 1 amp. I also precharge 20 at a time with 20 of the tp4056's with a computer power supply because if you parallel them like you are doing (imo), a higher voltage battery/batteries will send its available amperage to a lower cell and the c rating could be maxed out. Love your videos

[@randyaguilar7813]

No

[@ladjkaoz]

where can I buy that charger...

[@sethlavinder]

Wish I had known this battery knowledge a few years ago, as I was an IT guy and used to collect piles of dead laptop battery packs for recycling. I was familiar with idea that the entire pack wasn’t bad that it was probably just one or two cells. What got me I was still afraid of blowing up a lithium battery trying to charge it now. Never realized how much useful power I was loosing. Price was right! What beats free!

[@ecospider5]

The 300 mili amp was the number I needed. Charge with 300ma and if they are warm chuck them. That is definitely step 1 in my routine.

[@shawnmurray7232]

Some pretty good info there, & love the Samba & Powerwall projects!!! Here's some generalized "safe handling practices" for pulling used cells from packs: 1. after pulling from battery pack, measure cell voltage. if it's less than 2.5v, toss or recycle 2. charge the cell. if it gets hot during charging, toss or recycle 3. measure cell voltage 5 minutes off the charger. Less than 4.1V toss or recycle 4. wait 30 minutes - 1 hour & measure again if it's fallen below 4V toss or recycle, otherwise record voltage 5. store cell for 1 - 2 weeks, check & record voltage, if cell voltage has fallen more than .1v from previous recorded voltage, toss or recycle. 6. store cell for 2 months, check & record voltage, if cell voltage has fallen more than .1v from previous recorded voltage, toss or recycle. Any batteries passing the above can be basically considered "good cells", but I would go one step further & run a complete 1A discharge / charge cycle on them to see if they can handle a decent drain & rapid charge, if they handled the low charge without getting warm but heat up quickly on fast charge, or get really hot at 1A discharge, I would not trust them. Also, for charging / discharging / testing I prefer the Opus BT-C3100 V2.2 for a few reasons. Yes it's more expensive, but the Imax B6 is widely counterfeited & the counterfeit ones can cause serious problems including fire. C3100 has 4 completely independent channels. User selectable options include Charge, Discharge, Refresh, Cycle Test, Quick Test. Quick Test IMO should be done on all cells that pass #1 above before proceeding to #2. This shows you the internal resistance of the cell being tested. Any Cells >500 internal resistance = toss or recycle. My cells with half original capacity are between 200-300. The cells I had that went over 500 did get hot during charging. Any "good" cells that had been siting for several years can be run through the "refresh" cycle to potentially recover lost capacity & reduce self discharge. True, you can manually "refresh" with any charger, but the Opus does it without stopping restarting each cycle. True, you can only charge 4 cells at a time within the charger, but you can also discharge 4 cells at the same time. Also, you could probably rig up those 4-cell holders to run one in each slot & still charge 16 cells at 250mA per cell (1000mA charge / 4 cells) at the same time.... Charge rates for the C3100 = 200mA, 300mA, 500mA, 700mA, 1000mA, 1500mA, 2000mA Discharge rates for the C3100 = 200mA, 300mA, 500mA, 700mA, 1000mA Unfortunately, the Opus does not handle LiFePO4's :(

[@alekar2034]

Shawn Murray Hey can you explain why you charge them to 4.2V when they're rated with 3.7V ?

[@shawnmurray7232]

3.7V is "nominal voltage" but cell capacity is calculated from 4.2V. At 3.7V cell (without a load) capacity is only about 40% of maximum. Products that use these cells should be regulated to use 3.7V (per cell) which will give a fairly consistent output until the cell voltage drops below 3.7V. For long term storage (over 2 - 3 months without use) cells should not be charged over 3.7V to maintain maximum cell capacity. batteryuniversity.com has tons of great info, but lots of long boring reading, but worth the time if you're going to do something like the Samba or a Lithium-Ion power wall.

[@alekar2034]

Shawn Murray thx :)

[@saadomar1101]

@@shawnmurray7232 hi there,, really interesting finding and readings measures up there for harvesting and separating goods and bads, I have a question, are we able to use these harvested cells in large packs for an off grid system using only 60% of whatever total capacity left of them, ? I am thinking if we are able to do this for many years,

[@Techburn997]

Another thing you can do is measure the voltage straight out of the casing. Depending on the source of your cells and whether they have protection circuits on the cells themselves you can 'bin' cells below about 2.3v as a low priority for testing as they have a higher chance for self-discharge and low capacity whether through age or internal shorts.

[@JohnDoe-pv2iu]

Back in the day before automatic chargers that cycle, analyze and charge them for you. It is still work but not as much. Take Care, John

[@Cooldipo]

Can you pls share a link of automatic charger that can revive or recycle 18650 cells. Thanks

[@NonnofYobiznes]

I love how clearly you explain things in detail. I do like Rinoa, the problem with him (her?) is that quite often they's not much explaining... And I haven't seen much replying to questions in his vids. Thanks man, subbed.

[@jftechdrones]

She's female

[@reelinnovationsllc723]

Hey, I've got a time- saving idea for you. (It's pretty simple and maybe someone else has mentioned it, but I didn't see it in the comments.) Get a FLIR (infrared camera) and look at the batteries when you're first charging them. You'll be able to see which ones are heating up early- on and know to eliminate them quickly. Good video, BTW...

[@ramade9040]

Time saving = more cost

[@ponkuna]

Reel Innovations, LLC good how much it will cost and give me the name of that FLIR for me to search. Thx.

[@donny5523]

Can u combine different cels like 2000mah and 3000mah different Brands With charging ?

[@saadomar1101]

I am here to watch and learn and I thank you for making all these series of videos,

[@williamjordan811]

Great Video!!! Thank you for your continued support of all things electric! Check out hydrogen stored in a metal hydride matrix, you can make hydrogen from water, and then store as a gas in a metal hydride matrix (metal molecule) at low pressures without the danger of high psi storage. Good luck and God bless

[@douglundy5755]

yes, a guy had a corvette built to run on hydrogen in fuel cells YEARS ago in total safety with this tech. He just gave time to make hydrogen from water with house current like charging a tesla but without batteries, instead the hydrogen was made and after a few days he had enough to go 400 miles or more..It could be done lots faster with a powerful method and cheap off peak power when the grid is making lots of electricity but demand is down and its just going to waste anyway.

[@Sularus76]

Thank you so much. I bought a whole bunch and I was doing one at a time charging and discharging. I never thought about putting 16 together and just charging them.

[@notjacknicholson2225]

I bought my mom an old wireless speaker that had 2x18650 in it. Looking at the speaker's manual, I found the battery life to be pretty weak. I couldn't find 18650s at a reasonable price around so I ordered a brand new 6 cells (Dr. power, Mr. batt or something...) laptop battery from amazon for 25$. I disassembled it and rewired them in a 2s3p configuration. I don't know much about batteries and all of that but I heard you had to have matching cells to make a battery pack. The 6 cells came from the same battery pack so I guess no problem there. As there was room in the device for 4 additional batteries they all went in and there you go, almost tripled battery life.

[@gibbons7047]

What happens when I make a 4 battery power pack with one cell the has much lower mAh than the other three? say 2500, 2500, 2500, 1300 mAh (used Samsung26f). Is the pack better off with just the 3 higher preforming cells? The internal resistance was measured about 20-25 for the good three and 51 for the lower mAh cell (by the lii-500, I know, just an estimation). Voltage seems fine in all of them, no excess heat during charge/discharge. Thanks in advance for any input!

[@robertmotion]

Great video. Question - can you recommend a lithium battery C-rate tester to purchase. I build ebike batteries and need a solid c-rate tester. thanks. /Bklyn👑

[@MrBrettStar]

Hi +jehugarcia I have been watching your videos for a while now and find them interesting and well presented. I have just started harvesting batteries and thank you for your tips! It started really good but then I got a few older battery packs and have found a few that have got quite hot (charging at only 500ma, scary to think what would have happened at 1amp) I have also found that if one cell gets hot then all the other cells from the pack will do the same, I now just get rid of the entire pack without testing, just easier to dispose of them all rather then risking a fire.

[@SirWolfCZ]

Guys please DON'T TAKE ADVICE from this man. Connecting totally random, charged, discharged and damaged cells together in parallel is EXTREMELY DANGEROUS. You could burn your house down. Firstly, current will flow from the most charged to the discharged or shorted cells without any restriction and regulation. Secondly, the current form the charger won't be divided equally, because the cells are in a different condition. Some cells migh be hugely overcharged. Please upvote this comment to make it more visible.

[@jehugarcia]

Lol

[@jasonbrown467]

@@jehugarcia isnt most of what he is saying true? i have been told since the 1980's that you alway match our batteries for charging and loads, even the dumb little AA batteries in our rc toys. sincerely i want to know. also i would test each battery individually for full charge and full discharge and rate the true mah. i have a pretty high end charger for lipo that can do every battery tech i have heard of and report mah, but i dont know much about the lithion settings yet, thanks for the video

[@oneproductivemusk1pm565]

Forgot to mention the name of the device. How is it called and where to get it?

[@vivdlyvague6627]

Hey Jehu, Little bit of confusion at 7:00 am I writing the capacity or the discharge capacity. Thanks for all the help Mr Trail Blazer.

[@jehugarcia]

Yes, Discharge is what you cara about

[@JerryBatista1]

Your the man. I'm learning a lot from these videos!

[@grahamwoodwrad8743]

I bought the charger but when I connect up an 18650 it says connection break... after some research I've concluded it's because there's no balance leads ??? But I didn't see you having any what's the solution?

[@WDaland]

Thanks for making this video. How long does it take to discharge a cell, how often do you have to swap the cell out to test the next one?

[@jehugarcia]

1-2 hours

[@miketaylor803]

Jehu's bounce rate is synced with the rotating fan light..... nevertheless a very good and informative video , many thanks!

[@RobertSavello]

Thanks man. Been a subscriber since just before 30k. Awesome to see you almost hitting 100k! This video helped me with my e bike build.

[@markedtky]

This is pretty cool. I'm just a little worried about putting batteries with different voltages in parallel.

[@R.B_B]

Using this battery holder and the rc charger can br able to balance charger the batteries?

[@barevids]

bloody hell this is a long process. weeks and weeks. I just want a way to instantly tell if a battery is likely good or bad.

[@bobsaturday4273]

hey J , ya need a lab coat and a big workbench with test tubes and beakers and erlenmeyer flasks with some old racks of equipment outa submarines like the seaview and scopes with waveforms , maybe a jacobs ladder to the side just for good measure ....prop man , prop man

[@brettleach6565]

Build a dummy load out of cheap incandescent lamps. A 6 Volt lamp of suitable wattage would be an ideal long life resistive load for a single cell. (I'll be using 3 banks of 3 12V 22W festoons for a braking load of 200W on my e-bike.) Get fancy: Use a dual filament brake/tail lamp plus a toggle switch for a high and low discharge mode. Bank several of the above modules together, each connected to a common busbar on one side, and via a pair of toggle switches to two separate busbars, one for the batteries the other the loads. A link between the unconnected poles of the switches allows the sub-assembly to discharge a single cell in isolation. Now you can assemble a module of 5, 10, (as many as you care to build for) cells and test their individual and/or collective behaviour before you commit to soldering a single cell. I think you should be able to see how pretty much any load you desire can be set with the right choice of toggle settings. One final trick to bring it all together. 200 mm of 9AWG has a voltage drop of exactly 1 mV per Ampere. Voila, instant 100 Ampere shunt from the scrap bin. 300mm of 17 AWG (1 mm2) has a voltage drop of 10 mV per Ampere. A workable length for for a high precision shunt to measure the in situ behaviour of each individual cell while the whole bank is under load. Interface the whole shebang to an Arduino and a PC and you can effortlessly create and keep a detailed record of the charge and discharge profiles of a large number of cells under a wide variety of charge and load conditions. Actually a little 8 pin PIC chip would sit nicely across each cell, constantly measuring its voltage and current, and pass the data onto a more capable chip to be then passed onto a PC. Remember. because we have lots of floating rails, opto isolators are ABSOLUTELY ESSENTIAL to interface the individual cell monitors to the master processor. Since we've got the reference design already. Why not put a current and voltage sensing module built around a PIC micro-controller or similar, into every bank of cells from now on?

[@DaniilAKein]

Did you run any tests? I would be glad to hear

[@annespacedroid]

Are you sitting on a spring by chance?

[@paulhack893]

I've been watching your videos primarily on cells in general. Because of you I'm alot more knowledgeable in the world that is batteries. Watched this video more than I've watched all the Harry Potter movies.

[@PupettaZoccola]

Dear Friend, what mean when put probe on 18650 in continuity mode and sounds with "OL" on display written. The voltage is nominal 4.2 about Thank you very much

[@avid0g]

Saverio, the continuity mode is for measuring wires from both ends - not for batteries. 'OL' means Over Load and the reading is off scale due to an external voltage.

[@claytonpozzer]

excelent procedure.. another way is assemble a battery suport with a resistors for made 1 amp discharge and a one cell BMS and conect a analogic clock on the outlet of bms and check the time until time stops.. the time is relative to amp discharge. You can made many ot theese devices and dircharge test will be quickly.. Sorry for my bad english

[@jasonbrown467]

so no balancing? all the different types, different quality and mah rating all connected in parallel?

[@matt889]

this is a terrible idea FYI lol. These cells need to be balanced, I wonder how many fires this guy has caused in peoples houses from these videos

[@groodscom]

Did you say toss the bad battery as in throw away? I always thought lithium ion batteries had a pretty good recycling process. After all, all the chemicals you need to make a good battery from a bad one are there, they just need to be re-processed. Thank you for the videos though. I'm learning a lot.

[@themonkeydrunken]

Definitely recycle! Home Depot, Best Buy, etc all take them. Or when you've got a lot call around to recycling centers; they'll give you $X per pound for lithium cells :)

[@silemode]

Will the discharged value be the actual/ real new capacity of the cells?

[@SpeedDeamon95]

Do these batteries need to he dischsrged before storing?

[@lesliestandifer]

What about measuring internal resistance?

[@adus123]

where is the video you talk about taking opening laptop batteries

[@shahidzaman4955]

Sir I have purchased 18650 battery capacity tester module but when I tested the same 18650 cell Everytime after charging it full then it showed wrong reading of the same cell. 1st time reading was :168mah 2nd time 95 mAh 3rd time 125 mAh 4th time 76 mAh Why it showed wrong reading for the same cell as I charged it Everytime full for capacity testing. Regards

[@aerowindwalker]

where is that video u mentioned around 0:50?

[@azertaieb442]

Can a 16 power bank ..5v output 20000mah runing ebike perfectly?..note power bank shood be in series connexion ..it's mean 60v 20000mah . thanks

[@jftechdrones]

What's th maximum voltage difference between cells in the holders? Also what is the maximum capacity difference in series?

[@rcastorena]

Did anyone else notice the doggy quickie behind him at about the 1:08 mark through 1:15? 😁😁😁

[@rcastorena]

I just noticed Kevin's comment. LOL!

[@andriand711]

Jehu...can i mix different mAh to config 400 pcs 18650 for solar battery banks due ex laptop batteries? (Limited quantity)

[@kris754a]

Search for repackr

[@gudrn]

Great tip. Cheers from Brazil

[@glytch5]

I wonder how accurate those 4 button chargers capacity measurements really are... it can't be that precise considering the price.

[@darkwood47]

Hi jehugarcia, I have a question.? Can we use the balance discharge mode to discharge more than one battery at the time? Thanks for your answer🙂🙂

[@carlylestanleyschannel7672]

you are the best on youtube for answers...i have problems with some 16850 discharging errors the amphours are so low want discharge...how do you fix them so you can use them.. they charge ok ...thanks carl

[@rent2ownnz]

wow... do you have a temperature activated ceiling fan? just turned on all of a sudden during you video! nice!

[@danieldixon5944]

Do laptops have certain kinds of chargers for the type of battery in the laptop?

[@danielboix7973]

Sometime I charge a cell from 0V and gets heat at first but once the charge rise for a few minutes, perhaps 20-40min, then the temperature decrease and charge fine and cold. I use to charge the cells that holders and tp4056 for each slot

[@TimBaker-ld7ir]

Question, I have a power bank in my truck that was designed for my stereo system. The balancer was accidentally unplugged for 2 days with in those 2 days i never used the radio. But when I was driving on the second day I heard a noise come through the speakers that sounded like static so I pulled over and I heard a noises that sounded like a burst of air and a nasty smell followed it probably did the 30 times in a 6 hr period the battery was very hot so I unhooked everything after the first time. How an I test the bank with it all together to see if everything is ok? And what would that puff of air be? And is that normal for a lithium battery to don’t is is overheated. I’m assuming that is what happened because like I said the balancer was unhooked for a couple days and the battery was being charged by my alternator still at that time and I wasn’t loading the battery at this time

[@mamun2a]

Hi there, i dont have imax charger. I have only a tp4056 and 3s2p bms for charging, can i check Battery conditions with it??

[@Nettle314]

When you test discharge them, do you need to do that one cell at a time? Or did I get that wrong?

[@Nettle314]

and can you charge LiFePo4 with this?

[@MaxGoddur]

I am using the SKYRC iMAX B6 but for some reason, it shuts down stating something to do with time as in charge time was exceeded. Something like that, right. Is there a setting where you can turn off the time for charging feature on these chargers?

[@Eddbassist]

Using the B6 I charge the cells to 4.2V and then use the discharge setting @ 1amp. the charger shuts off when it gets down to 3V but I check the cell with a multimeter and it reads more like 3.5V. I've read that this is because the voltage will read lower under load and then bounce back up (not sure if this is the case). Do I want to keep discharging it down to 3V and take that reading or do i take the reading from the first run ?

[@jehugarcia]

First run

[@chungnguyen5399]

jehugarcia p

[@BluemanBas]

+jehugarcia how much heat is acceptable while charging the cells? i got one that was about 29ºC on a 22ºC room, is that considered hot?

[@jonyjoe8464]

This video gave me an idea how to charge alot of cells at one time, before I been using the opus btc3100 and foxnovo 4s, to charge and test the cells. Both will measure the capacity. The opus can charge and discharge at 1 amp, the foxnovo can charge at 1 amp and discharge at 500 ma . Now I can just use those 2 chargers to test the capacitys. Either way it take hours to test them, but having a seperate way to charge them speeds up the process. I built a 3s battery pack with 168 batteries (94 amp hour). As long as you carefully choose your cells when you build it to be as close to perfect balance, the entire battery will stay in balance on its on. I use cells as low as 1100 mah and as high as 2500 mah to build the pack, so far so good. Like they said on the video, any cell that loses capacity after sitting for 3 hours, dont use them. If you use those cells, the battery pack will not stay in balance and will not fully charge. I recommend stay away from the power tool 18650, I bought 50 of those high drain ryobi cells, All measure 0 volts, about 6 of them had venting damage, the 20 cells I revived were average 700 mah capacity. It was a waste of money.

[@MaxGoddur]

I picked up one of those units and was saddened when I tried discharging 4s4p total of 16 cells it took four separate restarts over three day period due to the time reset built into the charger. Not sure if this happens in the charge mode will be testing that when the discharge completes, hopefully, today.

[@mubashirshah93]

Same issue, my charge charge for only 120mints

[@anthony1113]

What about the internal resistance. I have the Zanflare C4 charger and I just completed the normal test. How does the mR number play into it. The first 4 cells i tested were 74mr, 138mr, 70mr and 54mr.

[@dylanc9275]

so for discharging at 1amp whats a safe temperature they can discharge at?

[@craftymulligar]

Nice tips put this on save and watch from time to time.

[@theunssnyman6310]

Hi Jehu, what about the flow of current between cells? They are not all the same voltage when you insert them?

[@shaneweightman]

When you say 16 cells paralell , do you connect balance lead , please ? Shane uk

[@jehugarcia]

+shaneweightman no

[@zeffur7]

No need for a balance wire since the max V is 4.2 (most li-ion (with a carbon anode) can be safely charged to 4.25V Once the charge is done all the cells should be balanced if they can hold the charge @ 4.2V.

[@jamest.5001]

shaneweightman when you parallel cells. they basically have to be at the same voltage. because unless there is a very bad cell. the higher charged cells will charge the lower ones. only in series would you need balancing. also while in parallel .1 bad cell will kill the whole lot. possibly.

[@SergeiRomanoffelevenCubed]

Jehu. I'd like to hear your take on how these cells go bad. Why they go bad. How to prevent them from going bad. My theory is that if these cells were in a vacuum at a consistent passive connetic temperature...

[@ShaneMorgan73]

wouldn't it be a good idea to check each cell for continuity first? That should let you know if there is a short correct?

[@isoobaalex942]

i have 60V 19S BATTERY but the 13s cell group reads 0.0v , so the total voltage of the battery is less by around 3.n Volts which is failing the battery from charging but when i use a wire to skip/jump the 13s cell group and link the 12s to 14s groups the battery charges though the wire heats up. does that mean the 13s cells are dead? their connections are intact. can i disconnect the 13s and link the remaining 14s to 19s to the other series with the same BMS?

[@inototen]

Instead of using this holders for four batteries, can I use eight individual holders and connect them to a protoboard in parallel and then connect the charger?

[@jehugarcia]

Yes

[@inototen]

jehugarcia thanks!

[@markaroundbarbados]

Hey do you have a full video of the process and settings to charge and then discharge to determine what cells are good or bad?

[@EngineeringNS]

What's your cutoff voltage?

[@gerardjachymiak5822]

You are an inspiration jehugarcia ,to me and to lot's of other people

[@GamingAmbienceLive]

*STOP SHAKING*

[@ceeweedsl]

stop watching

[@Muhammadismail-ud6jv]

Hahaha he has same habit like me

[@davidvaeyens2188]

Hi..can i mix 18650 cells in a powerwall with ebike en laptop cells ? Thanks

[@sylviomuller9240]

Would it be save if i just charge them and then test the voltage? Just for a small e-bike projekt.

[@telmobrandao5062]

Wen i discharge a cell at 1ah using Opus BT-C3100 every single cell heats up bit, but wen using a Imax B6, the same cells dont heat up... whats going on? Another thing that's been happening, the first time i test a cell after living it alone for about a month i get for ex 2000mha i then charge the cell and test it again and the value will alwais drop quit a bit. Do you now why?

[@awilensky]

Do you ever use the programmable discharger in that programmable charger blue box? Did I miss that? Oh I see it now, never mind, any other advice?>?

[@omega1gun212]

I just got a power lab 6 like yours is there anyway you show a quick video on how to use it?

[@MaxGoddur]

Starting my trailblazing with batteries. The first reason for even entering this arena is ebike pack failure. Once I have that project repaired will move on to set up some battery packs for 110v home use. That is a long way off as I am just starting.

[@ManOfHonor27]

The link you posted at the top to buy holders on amazon didn't show any wires. Again, another step missed I don't understand. How do you wire these holders into the chargers?

[@jehugarcia]

+Lightyear Wireless You can use any wire, you can use a connector or not, you have to connect it so that positive from charger connects to positive in all cells, and negative to all negative on cells

[@ManOfHonor27]

o.k. just never soldered before and couldn't find a video showing how to do it right to the holders and imax charger or for the 18650's in the powerwall.

[@artineogda]

You may be surprised if you put a discharged and charged cell in parallel to the charger (connected in parallel as you show)

[@TheGrimshaw]

Hey you have a bunch of cells from the laptop and each cell has diffrent amps, do you put all the same amp carring cell togather to make one battery or any cell can work once its the same volts?

[@patisangana9735]

Thanks for the info, really helps, Are there any lead acid and Gel battery charger dischargers that do the same? I live in West Africa, and there are loads of used Front terminal batteries, but no way of knowing if they re good or not

[@ecospider5]

Hobby chargers like the imax b6 can be set to Pb to charge lead acid batteries. But I just use a lightbulb and a timer to test lead batteries discharge capacity. Do it once on a known Good battery then do it on the unknown batteries. If the known battery takes 1hr to discharge and the unknown takes 30 min you know it is half the capacity. You can also do a similar thing using a power inverter. Battery-inverter-bulb. The inverter will give you a nice low voltage cutoff.

[@jasonyannuccelli2499]

G’day from Australia 🇦🇺. Sorry if this question has been answered.... I have the charger, what setting do you use do charge these 16 cells ? Thanks 🙏

[@kmuralikrishna1582]

@jason any update here... Have you changed....? If yes what is the voltage and amps for 16cells can you reply if you got any help from any sources. As per vedio we can set 5amps for 16cells then it equal to 3 AMPs per cell but in that case what is the voltage need to know is that 5v or I don't know. But 5v best I think

[@ThanosSustainable]

Hello Jehu, I have a bunch of cells that although they don't self discharge at all (they stay over 4V after weeks), they output around 1500mAh only under a load of 0.1A; anything more and they don't even output more than 20mAh or so. What do you think is wrong with them? Too high internal resistance? They were in some handheld vacuum cleaners from 5 years ago which even had BMSs inside. Any ideas if they can be refreshed?

[@bezmi]

Just to point out, the charger would be charging at 300mA, not 300mA/hr. Current is already the measure of the flow of charge, so it doesnt need to be 'per hour'.

[@TheDanielsmor]

can you discharge 16 cells at the same time too not for capacity but for the heating test all mine are charged but did not check for heating while charging them

[@cameratests]

I noticed your imax B6 charger is the 50W version. With the 80W model could I safely charge 24 or even 28 batteries at a time?

[@MYNICEEV]

Awesome information my good friend. Looking forward to the next tutorial. Have an amazing day.

[@craigr306]

Do you have a video on the charger setup