Make Matched 18650 DIY Powerwall Modules using Builder tool rePackr.com

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  • เผยแพร่เมื่อ 2 ต.ค. 2024

ความคิดเห็น • 218

  • @karlbartelt3939
    @karlbartelt3939 6 ปีที่แล้ว +2

    Thanks again for keeping us all inspired to keep recycling. It was great to see you having a good time on holiday also :)

  • @pulesjet
    @pulesjet 6 ปีที่แล้ว +2

    Damn ! I was thinking it was going to be pain in the Rump to Calculating what batteries would give me equal Cell Capacity. That Program took away the Pain. Thank You !

  • @FPVREVIEWS
    @FPVREVIEWS 6 ปีที่แล้ว

    that program does a similar task to the programs used by the airlines to calculate weight and balance for aircraft, to know how to load the baggage, and balance the aircraft, while making sure that the weight estimate is accurate. interesting. your channel is valuable as always! thanks, Jehu!

  • @Shmade0304
    @Shmade0304 2 ปีที่แล้ว

    I legit just made this pack lol watching this video on super slowmo didn’t know how to connect the balance leads so this was a great video on that ….your the goat 🐐 🙌🏽🙌🏽🙌🏽🙌🏽🙌🏽🔋🔋🔋🔋🔋🔋👑👑👑👑👑👑👑

  • @quentinrufin4025
    @quentinrufin4025 6 ปีที่แล้ว +4

    Thank you for mentionning this great tool.

  • @pltspemula
    @pltspemula 2 ปีที่แล้ว

    18650 battery that always intrigued me😁🇮🇩

  • @milvolts1
    @milvolts1 6 ปีที่แล้ว +2

    And man I wish you had a step by step video. Looks pretty good.

  • @ProfBab
    @ProfBab 3 ปีที่แล้ว +2

    6:47 programming tip: if you want to find the cells faster, just sort them first

  • @imho7250
    @imho7250 6 ปีที่แล้ว +3

    That tool should add a way to enter both capacity and resistance so you can build a pack that not only stays balanced during slow discharge, but also won’t let one brick sag excessively during high discharge. Sort of like one of your old videos shows how to do by manually grouping the cells and getting the high drain and low drain cells equally distributed while getting the total capacity of each brick as close as possible.

  • @P8FPV
    @P8FPV 2 ปีที่แล้ว +1

    I found if you line up your cells lowest to highest mah it's easy to find each cell you need

  • @milvolts1
    @milvolts1 6 ปีที่แล้ว +3

    Can you put link for one of your videos, a slowed down dummy step by step version that shows me how to build a 36x 18650 batteries 12v pack. Or something similar. Or if you have a step by step video on how you built your Puerto Rico Emergency power case. I would appreciate it. Love your videos man! Keep up staying up.

  • @ibraheemrodrigues861
    @ibraheemrodrigues861 6 ปีที่แล้ว +5

    Me and some friends are building an electric go kart using 18650s, this is going to be very useful! Thanks for all the great work and videos you're doing on the topic.

  • @MarkSeve
    @MarkSeve 6 ปีที่แล้ว +1

    Love your work Jehu. Keep it up brother.

  • @emceh
    @emceh 6 ปีที่แล้ว +12

    If you give this repack tool more cells than you need in the pack the capacity will be way closer as it's going to discard cells that aren't good for the pack

    • @fourzerofour7860
      @fourzerofour7860 6 ปีที่แล้ว +1

      Sweet, I didn't know it did that! I'll definitely try that next time I'm building a pack!

    • @pulesjet
      @pulesjet 6 ปีที่แล้ว

      I was surprised at how well the program could balance the cells.

    • @ipissed
      @ipissed 6 ปีที่แล้ว

      Well that changes everything considering he has an official shit ton of batteries. I would also try to pick out ones that were closer to begin with.

    • @pulesjet
      @pulesjet 6 ปีที่แล้ว +1

      The Algorithm chooses the Highest Capacity Cells to start with. It would be cool if they included a Bubble Sort program you could use as well.

  • @antoniogoncalvesb.pereirag8922
    @antoniogoncalvesb.pereirag8922 ปีที่แล้ว +1

    Nice video , best that I’ve seen on the net ..
    Excellent explanation 👍

  • @constantinschipor130
    @constantinschipor130 7 หลายเดือนก่อน

    hii, what about resistance? As far as i know it has to be very precise, otherwise it affects the equalization of the cells.

  • @gugaboyz
    @gugaboyz 4 ปีที่แล้ว

    I've been following your vlogs for some time and a month ago I wish I had seen this one.. But to be honest, I've done a better job than this site! 6s7p separated by 3mAh, yes, three!! 17735mAh /35/36/34/37/33 and 36.. Done the mats myself and I couldn't be prouder and happier :)
    Keep up teaching! Appreciate all your work.

  • @AKAL-ESH
    @AKAL-ESH 3 ปีที่แล้ว +1

    Great information but felt like you fast forwarded past the more difficult parts at the end. Maybe I missed a previous video where you showed the end of the build.

  • @chipichopo12
    @chipichopo12 4 ปีที่แล้ว

    Algún día nos tendrás que explicar todo tu montaje y tu powerwall , un saludo desde España

  • @craigminca7446
    @craigminca7446 6 ปีที่แล้ว +6

    I just did 1120 cells with cell pack man that was tedious., painful and took me all day. Lol

  • @phizicks
    @phizicks 6 ปีที่แล้ว +33

    You SHOULD charge the cells first and leave them alone for a number of weeks and see which ones self discharge to weed out the bad ones. Capacity checking isn't enough otherwise you end up with a pack that keeps discharging itself.

    • @geraldgrogan
      @geraldgrogan 6 ปีที่แล้ว +5

      I think he assumed you did that already. There are other videos that walk you through testing and sorting of the cells

    • @tomamerman7699
      @tomamerman7699 6 ปีที่แล้ว +2

      Phizicks the cells that self discharge would not be holding 80% capacity. Especially since the cell analyzers calculate discharge capacity. I guess if these cells were originally 2600mah and reading 1400mah then there could be a self discharge cell but if these are 1600mah cells new and reading 1400mah now there's no self discharge. That means the anode is shorted with the cathode.

    • @DIYTechRepairs
      @DIYTechRepairs 6 ปีที่แล้ว +3

      Tom Amerman i have seen many cells holding close to new capacity and still self discharging. Roughly up to 0.5% off all my tested cells have had that phenomen. Of course depends on source of the cells.

    • @njfulwider5
      @njfulwider5 6 ปีที่แล้ว +1

      What about Restances??I have also seen the same but was able to catch this with Resistance testing. I like to resistance tested every cell, looking for the higher ones. those I typically find will self-discharge pretty fast compared to the other cells. Some people instead of resistance testing will just charge a cell and if it falls below 4V, they consider it bad. I have seen cell at almost full capacity, self-discharge with high resistances. Also if you have a cell with high resistance, and you try a measure the capacity by charging, instead of discharging, and you use something like 0.5amps. You will get a much higher Capacity than the other cells. Typically easy to find, based on them measuring 2800mah and the cell is actually 2600mah. The cell is discharging at the end of the charge faster than the charger cycles.(but I am a newbie, and these are just my experience with salvaged cells.)
      Still a great Video, but my only worry is using Brass strips, instead of copper? I thought this was a no-no? I had always thought he used copper?? I can find brass strips all day long at my local hardware store, just not copper. I have to make those myself.

    • @DJDavo013
      @DJDavo013 2 ปีที่แล้ว

      Did you put a load it? Like a watt meter? If you put a load on it and the current drops big time, 90% or more that the battery is dead though

  • @kelvynbettridge
    @kelvynbettridge 6 ปีที่แล้ว +3

    Great vid, suggest picking up any random battery then place it in the row it was assigned by the repacker

  • @ericspano4350
    @ericspano4350 2 ปีที่แล้ว +1

    Very nice I think I will like that repackr site

  • @gwilkins712
    @gwilkins712 6 ปีที่แล้ว +4

    I have built several packs and never use a BMS. They always fail and are a pain in the butt! I charge my packs every time with a nice hobby balance charger. The 52v packs I build are split into two 7S packs. I then charge each 7S with my dual 8S balance hobby charger. I believe investing in a good hobby charger will out way all the bad BMS issues I will have to deal with in the future. Plus the hobby charger allows me to monitor cell voltage and resistance which helps determine the over all health of the battery.

    • @MrSummitville
      @MrSummitville 4 ปีที่แล้ว

      Well, you are using the BMS ( balancer ) that is built-in to the Charger. You have no BMS when discharging ...

  • @wallstreetdragon
    @wallstreetdragon 6 ปีที่แล้ว

    That went over my head...... Whoosssh

  • @barkster
    @barkster 4 ปีที่แล้ว +2

    is it me or did he just cut video short. I wanted to see how he charged and test the pack

  • @ottoestrada6702
    @ottoestrada6702 3 ปีที่แล้ว +1

    GO SLOW ON THE BMS SETUP!!!!!!!!

  • @paulkennett
    @paulkennett 6 ปีที่แล้ว

    Repackr.com was created by Chris Bird and friends: th-cam.com/play/PLYPpafzkpmJNf4sC8ogTxN7zJwkPGwqSG.html
    Also the back end software is open source.

  • @paulkennett
    @paulkennett 6 ปีที่แล้ว +1

    You can tell Repackr.com to rerun it's algorithm on your list of cells and it will produce a slightly different sort result each time. So if the divergence is more than you like in the first result - you can just rerun the sort and (maybe) get a very slightly better result. The backend code uses a cool software technique called simulated annealing: en.wikipedia.org/wiki/Simulated_annealing

  • @Pirahnaxxx
    @Pirahnaxxx 6 ปีที่แล้ว +2

    Nice reference to the rePackr utility. That helps a lot. I enjoy your battery videos on TH-cam most. The LIVE streams can be fun, but not normally as informative for me.

  • @KingofStreet3
    @KingofStreet3 6 ปีที่แล้ว +4

    Should I check the battery even if I buy brandspanking new 18650s??

    • @mauritsschoonderwaldt676
      @mauritsschoonderwaldt676 5 ปีที่แล้ว

      this only really applies for recycled 18650's. new ones from a TRUSTWORTHY source should be good, but if you buying chinese stuff you should test anyway.

    • @MrSummitville
      @MrSummitville 4 ปีที่แล้ว +1

      @Victor Guillen
      - It is much better to find out that you have bad cell BEFORE you build the entire pack, because then you need to dis-assemble and re-assemble the entire pack ...

  • @p_mouse8676
    @p_mouse8676 6 ปีที่แล้ว +7

    Btw, instead of the little resistors you can also just use wire on a spool. Copper, silver or other types of wire would work just fine.

    • @dejayrezme8617
      @dejayrezme8617 6 ปีที่แล้ว

      Yeah curious. Or just buy fuse wire. It really is an aspect that "smells" a little about this channel. It would be nice to have a video on how to precisely calculate the needed wire length and gauge for a certain battery pack instead of guesswork.
      I mean it can be done.

    • @p_mouse8676
      @p_mouse8676 6 ปีที่แล้ว

      What do you mean by calculate? It's a matter of a few simple physics laws about wire length, resistance and dissipated power -> heat?
      Or the simple version, look what companies use and use that as well. A little to big never hurts.

    • @dejayrezme8617
      @dejayrezme8617 6 ปีที่แล้ว

      Well yeah, that's what I mean. It should be simple calculation if you know how (I don't know how).

    • @tofush0e
      @tofush0e 6 ปีที่แล้ว

      www.powerstream.com/Wire_Size.htm
      I guess you could use the chassis wiring current load limit, which would make 23 or 24 AWG seem appropriate for use as fuse wire in a bus bar. This is assuming soft annealed, nickel-free, solid core wire.

    • @rndfixr4145
      @rndfixr4145 5 ปีที่แล้ว

      I think the idea is the resistors are easier to handle when you have to do the job a lot.

  • @Oneupthesleevecustoms
    @Oneupthesleevecustoms 6 ปีที่แล้ว +2

    Exactly what im up to on my channel your an inspiration

  • @Dangit-Dave
    @Dangit-Dave 6 ปีที่แล้ว

    Which video of yours go over making this type of battery pack from start. Also do you have a video to understand bms boards vs no bms board? Thanks for what you do too. I've watched several of your videos!

  • @FroztiProductions
    @FroztiProductions 3 ปีที่แล้ว

    So the rated drain of a battery doesn't affect capacity if the amperage isn't pushed? Like I can use a 20c 2500mah battery with a 10c 2500mah battery if I'm not exceeding 10c per cell? They'll discharge at the same rate?

  • @mreguest1000
    @mreguest1000 5 ปีที่แล้ว

    Hello. Thank you for creating this video. But I'm a little confused. You say 24v with 7s. But in other videos you say 3s is 12v, so 6s would be 24v.? So 7s would be ~28v? What am I missing? Cheers

    • @mauritsschoonderwaldt676
      @mauritsschoonderwaldt676 5 ปีที่แล้ว

      every liion cell is 3.7v. so 3s is actually 11.1. 7s is 3.7 x 7 = 25.9. if you would use 6s you get 3.7 x 6 = 22.2. neither of these is perfect, so you can pick the one most suited for your application.

  • @milvolts1
    @milvolts1 5 ปีที่แล้ว

    What part of the pack do the leads go? does the minus go on the lower capacity side of the pack and positive go on the more capacity side or vice versa. do the leads need to be on same side of pack or opposite or is that a matter of preference? please let us know

  • @RossYoungblood
    @RossYoungblood 6 ปีที่แล้ว +2

    Love your production values. Music/Editing. Nice work :)

  • @alsemi-back-up579
    @alsemi-back-up579 ปีที่แล้ว

    REPACKER NOW!!!!!!!!
    NFG
    TYPED IN OVER !))) CELLS AND STILL TOLD ME NOT ENOUGH CELLS!!!!!!
    NO PART TO SAY HOW MANY MORE I NEEDED LIKE THE OLD STYLE!!!!!!
    NEW STYLE!!!!!!! NFG!!!!!!!!
    TELL OTHERS!!!!!!!!

  • @gregorymccloskey9412
    @gregorymccloskey9412 6 ปีที่แล้ว +1

    Great video

  • @theredredstonesolar4996
    @theredredstonesolar4996 6 ปีที่แล้ว

    great video :D keep up the great work

  • @invictusfarmer7188
    @invictusfarmer7188 2 ปีที่แล้ว

    if i have 1000 cells in each 3.6volt pack will i need to do this if all of my cells are between 2400mah and 2700mah? total battery size is 7s1000p. how forgiving is the capacity on large power walls. or should i very carefully balance each pack by tested mah?

  • @ismailgul9066
    @ismailgul9066 2 ปีที่แล้ว

    I have cells between 1700 to 2200mah capacity. can i use this tool to make battery pack out of them ? is this range safe or i should compact the range further please guide anyone

  • @noobz5056
    @noobz5056 4 ปีที่แล้ว

    Can you use electrical conductive paste adhesive (silver content) to connect the batteries instead of wiring? Have you tried this? And what was the result for you? Thanks

  • @ola9371
    @ola9371 6 ปีที่แล้ว +3

    What is K & S brass strip model? Is it #8245?

    • @ShelbyGT5OO
      @ShelbyGT5OO 6 ปีที่แล้ว +2

      8230
      .41mm x 6.35mm = .016" x .25"

  • @karnashanmugam9789
    @karnashanmugam9789 4 ปีที่แล้ว

    Can i use 2000×15=30000mah for one parallel, 2500×12=30000mah for other parallel 3000×10=30000mah for one more parallel in 13s battery pack

  • @DiyintheGhetto
    @DiyintheGhetto 6 ปีที่แล้ว +2

    Hey Juhu onme thing how in the heck did you get the Bus bar on the the side without falling off?

    • @okan3644
      @okan3644 6 ปีที่แล้ว

      :'))))

  • @instinct022
    @instinct022 6 ปีที่แล้ว +13

    I wish u have more detail info..while building pack..

    • @246jonhy
      @246jonhy 5 ปีที่แล้ว +1

      Cual es tu duda amigo? (What is your doubt friend?)

    • @jaywenden1939
      @jaywenden1939 4 ปีที่แล้ว

      Watch his other videos idiot 😂

  • @beratllapashtica3185
    @beratllapashtica3185 3 ปีที่แล้ว

    Hello can you answer for me please
    I have cells 3.7v end 3.6v from samsung
    Can i use together to build One battery

  • @custer175
    @custer175 5 ปีที่แล้ว

    Dude what do you do with all of those batteries in your house?? Just charge and discharge them all day? Please tell me you are using them to help power your home or something.

  • @TheEder28
    @TheEder28 5 ปีที่แล้ว +1

    Friend good night, what brand of BMS would you indicate to make a bank of batteries ??
    Thank you, I'm from Brazil and I'm following your channel. Although here in Brazil electric car are very rare!

  • @pulesjet
    @pulesjet 6 ปีที่แล้ว

    Don't just run with the first numbers RePacker comes up with. You can do a lot better if you do one run and then substitute the Flyers with better batteries and run the numbers a few more times like that. With a few runs you can get the Deviation number down quite good.

  • @abhinavr212
    @abhinavr212 6 ปีที่แล้ว +1

    Where would i get 18650 for cheap in INDIA

  • @quadcopterhobbyshansie_fpv5895
    @quadcopterhobbyshansie_fpv5895 6 ปีที่แล้ว +1

    You could have pulled the balancing wire out of the bms instead of soldering en 2nd one to it! Tip for your next balancecharge with thw rc charger. Have a good one m8 love your work.

  • @irwinhisola5390
    @irwinhisola5390 3 ปีที่แล้ว

    I cannot understand what you are doing you should do it step by step para marami lang viewers.

  • @robr3978
    @robr3978 6 ปีที่แล้ว

    Thanks for this!

  • @joshuabest100
    @joshuabest100 6 ปีที่แล้ว +1

    Hi jehu i want to know when I charge my batteries they drop in voltage a little say 4.14v or around there is that normal they stay at that voltage and dont self discharge im just wanting to know if that's normal

  • @jimperri6405
    @jimperri6405 3 ปีที่แล้ว

    good day i have Lishen (LS) LR1865SF Cell which bms can i use

  • @dadoguillermo4613
    @dadoguillermo4613 ปีที่แล้ว

    Sir, where can i buy a 7s bms you used in your battery pack? 🙏🙏✌️✌️

  • @nelchan2421
    @nelchan2421 ปีที่แล้ว

    i'm planing to mix my 4 2200mah with 1 2150mah to make 21v is the Okay?

  • @JanSeewald
    @JanSeewald 6 ปีที่แล้ว +3

    rePackr is awesome!!

  • @doittoday1
    @doittoday1 6 ปีที่แล้ว +1

    Jehu, I have a weego Whip electric car with 630 miles on it. The battery is dead. Do you have an alternative to the old batteries that I could swap out ? Thank You. Mike

    • @jehugarcia
      @jehugarcia  6 ปีที่แล้ว

      pretty sure you can build it

  • @thebackyardjunkerscientist7732
    @thebackyardjunkerscientist7732 6 ปีที่แล้ว +1

    Wow man nice job on lettings us know about that site it well be very useful in the furture when i plan on making packs thanks alot

  • @elk3909
    @elk3909 4 ปีที่แล้ว

    i see use have the green ming he solar charge controller. do you know its hidden setting to auto start after power disconnects?

  • @iam_ambrose
    @iam_ambrose 3 ปีที่แล้ว

    Is it still ok to use the Nickel 18650 strip instead of the brass strip?

  • @anthonysanico1045
    @anthonysanico1045 3 ปีที่แล้ว

    Hellow sir may i ask
    Can i join 2100mah and 1500mah in same pack?

  • @alitonoliveira1700
    @alitonoliveira1700 5 ปีที่แล้ว +2

    Awesome!

  • @valeraswistun4
    @valeraswistun4 6 ปีที่แล้ว +4

    Hi is Russia, Привет из России

    • @madpet83
      @madpet83 5 ปีที่แล้ว +1

      But you must say- HI from Russia!

  • @rodri_belo
    @rodri_belo 6 ปีที่แล้ว

    BMS used in the video?!

  • @MrJob91
    @MrJob91 6 ปีที่แล้ว +2

    10/10 so much info!!!!!

  • @milvolts1
    @milvolts1 6 ปีที่แล้ว +1

    How would I get those 4 digit numbers to enter in website. Thanks. And do they all have to be similar or close to similar voltage.

    • @qcraft43
      @qcraft43 6 ปีที่แล้ว

      those number come from the Battery tester, you can get a Zanflare, or OPUS BT-c3100 and it will give you the internal resistance and the capacity ...there are many more bu that is what I have... I like the Zanflare the best...

  • @Bob_Lob_Law
    @Bob_Lob_Law 6 ปีที่แล้ว +2

    I've been waiting for a tool like this. This will save a lot of time.

  • @bobs12andahalf2
    @bobs12andahalf2 6 ปีที่แล้ว +1

    Really useful, thanks! Going to try making a small pack for kids' electric car, this is exactly what I was trying to figure out :)

  • @fourzerofour7860
    @fourzerofour7860 6 ปีที่แล้ว +1

    Great video! I'll be interested to know how that little BMS does.

  • @barrytaylor7365
    @barrytaylor7365 6 ปีที่แล้ว +2

    Bro, thanks for telling us what's up with BMS/balance devices from on line sellers. I finished my 7 kwh powerwall-clone 6 months ago, without BMS's. I buit it from the 1S 20P packs that you used in one of your other powerwalls. They are all closely matched in capacity. I have since been trying to find BMS's to make it more balanced. I have bought 5 or 6 BMS's from different manufacturers, and have not found ONE that works 100% correctly. mierda pura

    • @ahaveland
      @ahaveland 6 ปีที่แล้ว +1

      Barry Taylor One word: Batrium.

    • @mareck6946
      @mareck6946 6 ปีที่แล้ว

      or check out the diyBMS if you dont mind getting your hands dirty soldering it.

    • @jamest.5001
      @jamest.5001 5 ปีที่แล้ว

      Mar Eck do you have a link or info to diy bms?

  • @doittoday1
    @doittoday1 6 ปีที่แล้ว +1

    Would like to do Lithium Ion, the range on the old batteries was only 40 miles. I would like to talk to you about buying a set of batteries from you if you are interested?

    • @jehugarcia
      @jehugarcia  6 ปีที่แล้ว

      I dont sell batteries, but my friends do
      j35.us/May-3daySALE
      j35.us/May-7Day-SALE
      j35.us/LargeEV-battery-Modules

  • @davidallen4603
    @davidallen4603 4 ปีที่แล้ว

    Jehu,
    Love watching your videos 👍
    I want to make my packs modular like you have for my powerwall. My question relates to the BMS for each pack. I was planning on 7s10p packs/modules, with 7 of these modules in parallel to dictate overall capacity. The plan is to set up in a way that I will never draw more than 0.5a from each cell. In your opinion what amp rated BMS do you think would work best for each module?

  • @njfulwider5
    @njfulwider5 6 ปีที่แล้ว

    Another Great Video! I like to add a balance cables along with the BMS, just incase I have to balance charge later. You have to be careful when using a BMS and Balancing if you have a charger that does more than .5amps per cell. If your charger does more than .5 amps, sometimes it will trip the protection circuit and cause the BMS to fail, unless you reset it with no charge. Some will allow you to just add a charge and it reset. But if you don't know after balancing and thinking all is good. Your BMS wont balance or protect the batteries. (not sure if this is normal Behavior) just my experience.

  • @onkarshikhare31
    @onkarshikhare31 4 ปีที่แล้ว

    My batteries need to put out max 4.3 amps which resistor leg I use to .which would melt around 6 to7 amps

  • @leighamos489
    @leighamos489 6 ปีที่แล้ว +4

    Back to the basics, I have to do a 7S-12P , I have a 7S windows-android BMS to test on it and I am going to try a Buck-booster to give me 12-14.5V for my 5th wheel LED Lighting Circuit :)

  • @gapreston
    @gapreston 6 ปีที่แล้ว +1

    Great intro to making cell packs! Also, repackr[dot]com is a fantastic source. I hope this video means you're back on You Tube(?). My lack of experience with BMS boards won't allow me to do a video on the subject, but it would be a great service to the community if someone did a review of the various boards out there, especially for small packs. For power walls, Batrium seems to have the market sewn up.

    • @jehugarcia
      @jehugarcia  6 ปีที่แล้ว +1

      I never stop making TH-cam videos

    • @DJDavo013
      @DJDavo013 2 ปีที่แล้ว

      making vids with loads of views makes you more money lol

  • @drdronist
    @drdronist 3 ปีที่แล้ว

    Hi , How did you manage Dead cells?

  • @FIGUEIRINHA
    @FIGUEIRINHA 4 ปีที่แล้ว

    someone tryed the other option of repackr?
    "Arrange cells in to packs so each have similar capacity but vary the number of cells in parallel and keep cells in a pack roughly the same capacity"

    • @MrSummitville
      @MrSummitville 4 ปีที่แล้ว

      The "VARIABLE" option did not work for me ...

    • @FIGUEIRINHA
      @FIGUEIRINHA 4 ปีที่แล้ว

      @@MrSummitville thanks for the feedback! repacker have a problem and goes crazy in the variable option

  • @pakistaninoob7424
    @pakistaninoob7424 4 ปีที่แล้ว

    Please tell me can I use fully charged 4.2 v cells in the pack or have to discharge them to 3.7v .. as I don't have discharger

  • @KillerkoUK
    @KillerkoUK 3 ปีที่แล้ว

    Can you use any capacity cells with this? Or you need to stay close even with this repackr way?

  • @michaelc2644
    @michaelc2644 5 ปีที่แล้ว

    Is it me or is this not really 7 in series?

  • @1ken.cheniergmail
    @1ken.cheniergmail 6 ปีที่แล้ว

    I love your video's bro but I would like to know if you have any that you don't fast forward thru the process ?I know that you only have so much time when making video's but I think that anyone that really wants to learn from you needs too see the whole process in real time without fast forwarding thru the process at all ...Thanks again for the great video's

  • @josidasilva5515
    @josidasilva5515 6 ปีที่แล้ว

    Can you charge each cell individually to a fixed capacity first? what happens, if it is possible to do so? what do you think about cryonic energy storage: en.wikipedia.org/wiki/Cryogenic_energy_storage

  • @gianvanderbie2378
    @gianvanderbie2378 6 ปีที่แล้ว +1

    Hey jehu
    You can buy spotwelders really cheap on aliexpress (150$). Please try one out. I think it would be worth it because you make so many battery pacs. You can also buy the wire wich is used on the resistor legs.

    • @geraldgrogan
      @geraldgrogan 6 ปีที่แล้ว +1

      Jehu has other videos on using the spot welder. I think he owns one or two of them

    • @gianvanderbie2378
      @gianvanderbie2378 6 ปีที่แล้ว +1

      Gerald Grogan but why is he then soldering?

    • @jehugarcia
      @jehugarcia  6 ปีที่แล้ว +1

      th-cam.com/video/O9c8VrCuCwo/w-d-xo.html

  • @erginerdogdu7432
    @erginerdogdu7432 5 ปีที่แล้ว

    hello ! you are doing good but. not enough buddy ! as well as same capacity and mills and then, you need to find same charging and discharging behavers then, more ...!!! but you know you have a gift !!and you are welcome ...from Flashpoint

  • @CharliePalmBlond
    @CharliePalmBlond 6 ปีที่แล้ว +16

    After 7:40 you just lost me.

    • @djotter
      @djotter 6 ปีที่แล้ว +5

      Yeah, it would be cool to get an overview of how to wire the BMS.

    • @MrSummitville
      @MrSummitville 4 ปีที่แล้ว

      @@djotter Watch the video about connecting a BMS. This was about Repackr ...

  • @pyronmasters
    @pyronmasters 3 ปีที่แล้ว

    The builder tool is easy to use, spot welding was harder than expected, I built a 7s 15p pack (I wanted to charge 1 amp per cell) ended with a 932wh pack, still have to test to build another one. This video helped.

  • @brandedpc
    @brandedpc 4 ปีที่แล้ว

    hi you didnt check the internal resistence of each cell while making pack. Isn't it Important ??

  • @gw3436
    @gw3436 4 ปีที่แล้ว

    Just used repakr for my first 3s 10p pack , take a look in TH-cam for it with fuses and in a coke bottle lol so I can see when fuses blow if they ever do lol

  • @dunukic
    @dunukic 4 ปีที่แล้ว

    Hello, do you have to be careful about the internal resistance of recycled li ion cells? Only use the ones which values are close to one another or it doesn't matter? Because some bms are designed to ballance new cells and those cells have pretty much same internal resistance?
    Greetings.

  • @TomTheDutchy
    @TomTheDutchy 6 ปีที่แล้ว

    Hi Jehu, thanks for another awesome vid. I wondering how relevant the accuracy is. Lets say you want to increase battery life and only charge to 4V and discharge to 3.2, looking at the discharge curve of an average cell that will give you about 10% less capacity but will increase cell life dramatically. When you test the cells you are dependent on the cutoffs from the charger, which will probably be on a larger range then what you would ideally want. I get it that you dont want to put cells 500 mah apart together but given that there is an error on the capacitytester(is there, have you ever tested one cell 10 times to see what the sd and variance are?) It feels like an overkill because there is an inherent uncertainty with these cells. What do you think? Thanks for the awesome channel!

  • @e3castillo
    @e3castillo 6 ปีที่แล้ว

    Hi, What is the best 18650 battery out there right now? I want to tinker and learn to build my own system.

  • @MrJob91
    @MrJob91 6 ปีที่แล้ว +1

    So you use the resistor wire, not the resistor?

    • @MrJob91
      @MrJob91 6 ปีที่แล้ว

      John Coloe ty thats a very nice answer!

  • @franc520
    @franc520 6 ปีที่แล้ว +1

    what is the best solder for that application?

    • @darthtater
      @darthtater 6 ปีที่แล้ว +1

      Quality brand, ie Kester/MG Chemicals/Alpha, 63-37, RA type solder.

  • @jylimports
    @jylimports 6 ปีที่แล้ว +1

    hello Jehu , I need to make a pack 19s 40ah for my scooter I need to know how many cells do I need thanks

    • @GuthrieDennis
      @GuthrieDennis 5 ปีที่แล้ว

      I think the 19 in 19s spells it out for ya there fella. As for the Ah depends on the capacity and rating of the batteries your using.

    • @MrSummitville
      @MrSummitville 4 ปีที่แล้ว

      @jose r
      - Do you have any cells in parallel ?