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....

[@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.

[@AlbertEspinRodriguez]

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

[@hoping67]

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

[@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.

[@captainmcquirkstube8592]

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

[@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!

[@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.

[@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.

[@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...

[@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

[@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

[@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.

[@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.

[@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.

[@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.

[@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,

[@saadomar1101]

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

[@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

[@markedtky]

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

[@JerryBatista1]

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

[@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

[@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!

[@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

[@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.

[@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👑

[@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 :)

[@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

[@jwrhynejr.6689]

Thanks for the education! Good info for us electronically challenged!

[@GamingAmbienceLive]

*STOP SHAKING*

[@ceeweedsl]

stop watching

[@Muhammadismail-ud6jv]

Hahaha he has same habit like me

[@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

[@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.

[@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

[@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...

[@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

[@bobbywarrior1434]

Hola Jehu excelente video como siempre, me di cuenta que el cargador que enseñas en el video tiene solo un display y el link que pusiste para Amazon muestra un cargador con 2 displays, me podrias aclarar cual comprar, tal vez lo actualizaste a uno mas moderno o algo, gracias y excelente video lleno de informacion util muy bien explicado, buen dia

[@donny5523]

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

[@rent2ownnz]

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

[@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?

[@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

[@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.

[@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

[@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.

[@allexandruprroca6713]

Damn , I love your tips . I am building a E chopper made from scrap from pipes . now I am building pack for it .

[@VampirusX]

Very educational video as usual! Can I only connect 4 holder at once? I have a similar charger. Could I discharge the pack as well (as the final process)? My charger provide that feature. I don't want to buy a new charger if it works that way.

[@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

[@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.

[@chrisretz8748]

Hi Jehu, just get my new imax 6 and have a question. How can you charge a cell at 4,2 v when the imax is limited at 3,7v. May be there is a way to change the setting but can't find how to do. Can you help? Congratulation for your videos inspiring me a lot!

[@jonyjoe8464]

3.7 is the average voltage of a 18650 battery. Fully charge they read 4.2 , as long as you choose the 3.7 setting it will properly charge it.

[@gensyed]

Much appreciated. TQ. Your link line number six is missing. And also line number 5- It only goes to ebay home site.

[@guily6669]

I don't think you mention that the Imax B6 charger you can also buy the thermal sensor accessory for it to also keep a measure of the battery temp, then it really is a All-in-One charger with full data...

[@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.

[@toobglued]

Hey Mr G thanks for the vids.. lott a time to devote to on basically a voluntary basis. nice content . smart dude. anyhow, do you remember the old packs we used to make to run our RC cars in the 80's and 90's? Team Losi, Team Associated, RC10L.. The JRxPro! ... they all used to run on 7.2V Sanyo NiCad and If I recall it was a stretch to have a pack be more than 1400. The hump packs were like 1700Mah. Remember they were SCR and SCE? I still to this day have a Victor Engeneering VicPro Sr. battery charger. It had the key pad, took an external power supply and was used to basically do what the IMAX does today. I rememerber Reedy, Tekin and Novak were big names back then. I was in 7th/8th grade when I was building an racing those things. To this day I still have the Original Tamiya Frog!

[@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?

[@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

[@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

[@miketaylor803]

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

[@gerardjachymiak5822]

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

[@tejnamburu7409]

Hello @jehugarcia, Nice videos abt batteries and etc... good job, actually am building battery pack with lefepo4 batteries and i bought around 150 32650 new batteries from a batch, do i have to balance i mean charge and discharge process them as well , Thanks in advance

[@jftechdrones]

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

[@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.

[@luisdiaz00]

Did you notice that you're bouncing in this video?

[@makesaveinccomm]

HAHAHAHAH YEAH if you not said it. I wouldn't notice he bouncing LOL

[@komerwest9520]

Lol look at the eyes

[@khormunhuai5901]

probably he is shaking his legs or ankle due to some kind of mind concentration such as video making. i shake my ankle without noticing when i think too deeply...lol...

[@GroovyVideo2]

juiced

[@jaewok5G]

needs more image stabilization

[@glytch5]

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

[@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.

[@prolifictroll9387]

Next time you male a video where you're showing a particular product and holding it by the camera either provide a link in the description to the exact product or hold it still please it's hard to read when you're wiggling it! So good video thanks for the info broski

[@flipnunes84]

Thanks for the advice. Im using that 'imax b6' to test some liitokala batteries. (suposed to be 3000mAh) Trying to make a bat for my ebike. Need 48v for the motor, and the best amp for the autonomy

[@MYNICEEV]

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

[@ramesh6221]

Hi Jehu. Can you do a video how to power up your power wall from a solar panel..Thanks.

[@johnmay5957]

my genuine imax b6 v2 seems to give varying results with the resistance test. one battery i tested several days ago showed 93m Ohm.. today it shows 163m Ohm.. state of charge? also the imax seems to trickle drain the cells once they get down to 3.2 or 3v whichever you set it to.. and always shows a higher mAH rating then the other discharge testers i bought which actually drain lower down to 3v

[@vascom3]

It looks like the Imax balance changer that is shown in this video is one of those Chinese clones. But the link he shares where to get one is directing us to a Skyrc Imax original one though.

[@dennisyoung4631]

Was careful to try to get an original example when shopping for a charger.

[@Traderhood]

Jehu, I have put 8x 18650 cells in parallel. Set Lipo setting to 2.5A (3.7V 1S )and let it charge. It stopped at 4.08V automatically. What does it mean? You are staying in your video they should charge to 4.2V.

[@lesliestandifer]

What about measuring internal resistance?

[@FretsNirvana]

Excellent tutorial. One question, you don't need a BMS when you are charging and testing these batteries in a pack of 16?

[@jehugarcia]

I don’t use a bms on my battery packs, but that doesn’t mean everyone can do what I do, I have lots of bms videos planned for the near future

[@ToekneeToe]

So I would recommend a 2nd Imax B6 for Discharging. How about getting a generic Imax B6 for that purpose?

[@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?

[@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

[@e.wasteed3341]

Great videos mate legendary. At about 1.00 you mention, point and recommend another video about taking laptop batteries apart etc .. I try clicking it and nothing happens & I've looked up and down 3 times and can't see it - is it still available somewhere? I know your a busy guy - is there a link to that vid? Thanks & cheers for now., really appreciate what you do..

[@eraldylli]

That sounds very methodical, and that is a very good thing. But damn, also very time consuming.

[@deanraddick9041]

Jehu can’t thank you enough! man your awsome!

[@ltlpaa2973]

What does BMS mean? Also, what do you use these cells for, or what can they commonly be used for?

[@ecospider5]

Battery Management System Used batteries are good for anything you run at 1C (1C = discharging the battery at its capacity so 2200mah battery being discharged at 2200ma. 2C would be discharging that battery at 4400ma or 4.4 amps) So calculate your max discharge requirement and make your battery pack bigger than that. If you make a backup battery that only draws 15 amps then a 15000mah pack would do fine. If if build a car that will pull 500amps when accelerating uphill you will need a 500amp/hr battery when using used cells. That is why new cells that can handle 10C or even 20C are some times worth the money.

[@R.B_B]

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

[@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🙂🙂

[@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

[@oneproductivemusk1pm565]

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

[@Renton83]

This was so helpful thanks for the great information. I get restless legs too and sometimes bounce my leg so I can relate and all the negative comments I see about it make me mad.

[@kornshadow097]

only thing id of added is..when you said you would maybe use 1,500mAh cells for less critical applications and 2,000 for something demanding... what capacity is the cell rated for that you are talking about? or does its initial capacity when new not matter and those capacities are just what u want to go off of regardless of their initial caps?

[@teejay411]

How has this video aged? I believe you’ve discovered more efficient ways to perform this process. For example, Do you still recommend this charger?

[@SyberPrepper]

Thanks for the procedure and the details Jehu.

[@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.

[@Cavalier_Steve]

There is a lot of very useful and excellent information that you have shared with us! Thank you very much! Regards. Steve.

[@gudrn]

Great tip. Cheers from Brazil

[@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

[@silemode]

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

[@FredoCorleone]

One of the best videos on the subject

[@ponkuna]

Hi, I follow all of your videos I am getting ready to make my first 7s 20 powerwall(?) when I arrang the cells I got a question. Please answer to me as I am waiting to complete my setup. Thanks 1. 2900 mAh cell had 4.2v at the full charge and after 3 months came down to 3.7v 2. 2300 mAh cell had 4.2v at the full charge and after 3 months still having 4.1v-4.2v Which battery is good to select for powerwall? Thanks again.

[@omega1gun212]

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

[@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!

[@artineogda]

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