hey great job! any newb out there now has a clear, concise, down to earth guide to "Repair" their own battery pack. Seriously guys do you really need it spelled out for you. its simply the knowledge of the entire build or breakdown of a lipo battery with which you can then repair anything on yours. why not say thank you and not show your ignorance and lack of appreciation.
Ppl want everything instantly no effort do you really want ppl asking those questions taking apart a lipo battery it may be easier to buy new pack safer if your not mechanical or intellectual if i didnt pay 90 for pack still looks great next one i bought same time idk worth time at least now but appreciate picking up some knowledge wo opening pack myself thanks brotherman very professional job better than ones we buying from china for sure these smart asses dont appreciate good work
Alot that stuff if your mechanic going do just knowing but very detailed im older still amazed by youtube feel like knowledge out there be a rocket scientict all about if your able to grasp and apply how dedicated you are or can be any kid willing learn yhis very informative👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍i want send you battery for free just dont go waste not that i have money i got back into hobby almost burny house down messing arounfmdbeing cheapo
Thanks for the kind words man. I was just going to say, this was 7 years ago! If people don’t know how to wire cells in series & parallel, how to connect them to the BMS or main pack leads, they definitely shouldn’t be tearing down batteries in the first place. lol. 😂 Thanks for the kind words!
You are the best. Chopped off my balance leads yesterday and I was looking for how to arrange the wires. Your video answered my questions. Thanks a lot.
Great Video. I purchased a 6s and cell 5 is not showing a reading on my Lipo battery checker. I now know how to repair the balance plug solder joint’s.
I didn't need this info but for some reason I had to stick around for the whole thing. 👍 good video. Hopefully ppl take this seriously, especially the safety pointers, and not have to replace fixable packs.
Tip: if you want to get of the old solder, rather than shaking the bat pack when the solder is hot and liquid, just hold it upside down and let the solder run to the solder iron, you’ll get 99% of tje old solder out. Them shake the solder iron. Much efective and easy
I use those same amass xt60 and xt90 connectors. The plastic grip piece your talking about that snaps into place is to eliminate the use of shrink / heat tape. Their called shrink tubeless connectors or something like that.
Awesome and safe video! My 8th scale truggy did cartwheels running 6s at 50+ mph today and slung a brand new(2 days old) 60c 3s about 20 feet in the air...pretty good ding and a crease on the top cell but was still balanced perfectly down to a thousandth of a volt so I slammed her back in there and ran it down. No temp issues or anything stupid but I am still keeping a eye on it...will attempt a safe charge outside in my metal trash can hopefully no magic smoke is needed.
092722/0247h PST 🇺🇸 Thank you for the video. I’m still puzzled, as to why you detached all the cables….May be you know what you are doing, but, the viewers don’t. May be this is an instructional video on “How to desolder and resolder cables.” Using a knife on Lithium Polymer Cell (Battery) polymer Packet…. But it was nice to see that. Thanks again. Regards.
Liked your program on repairing a lypo. Ive tryed fixing or frankensteining so batteries they usualy end up in the recycle because the conectors are but a strip of foil and thats hard to solder. They usualy die in a big puff of smoke or there nothing to solder to. Anyway here an idea for a show I had a blade Chroma and loved it. My buddy chalenged me to follow his DJI 4 pro Well at 1700 metters my Chroma went in to shock and died probebly battery died or something. It fell and my buddy had his camera pointing down as hes trying to follow it and laughing at my dying drone. I got my drone, one arm torn off and the rest a pile of pastic bits. The only thing that survived are the motors. I want to build a drone with a carbon fiber or molded fiberglass body . I want to put the motors that survived on and i have a beebop 2 that still flyes take the mainboard and join it with the motors.i think that would be a killer heavy drone . Now im hoping that the beebop board will be able to supply enough power for the motors and i have a spare 5040 mA battery that volunteared to be power the part i need help at is the wiring of batery to board the main battery has a positif and negatif , the board has a multy plugg with 10 connector how do i take a battery with 2 wires and connect 10 points.i will tear a beebop battery appart to see how the cell are connected to the pluggand how do i know wich wires coming from the board to connect to the motorboth have 3 wires but diferent colours. Hope you can help. I frankenstein drones all the time but there beebop size or smaller .i was going to send some pics of my drone collection but theres no attach a file link on your coments. Keeping an eye out for your episodes HandyDan
Kudos for stressing the importance of the flux. Most youtube experts seem to think that the flux inside the solder is all you need - which says a lot about youtube experts.
Thanks a lot for this video! Really gives me more confident on a project I have in mind for replacing a dead cell on one of my 4S batteries... Where can I find more information about what things should I consider when selecting the replacement cell?? Ant suggestions overall?
shortening balance leads are actually not recommended, because of different resistance. so you'll get wrong (yeah, it maybe like 5mV only, but anyway) voltage reading when balancing. this mostly applies for thin conductors and less important for thicker wires. also, it depends on balancing current which (on passive type of BMS/chargers) are enabled in parallel to get some current away from cell when charging or discharging (but always for higher v/cell)... and the flux residues (don't know which type you use, but anyway) should be washed away with smth like isopropyl alcohol (IPA) or acetone, otherwise it will ease the corrosion over time.
winex You’re correct and thanks for the comment, however on all LiPo batteries I’ve ever seen and handled the past 10 years in this hobby, I’ve never ever seen a balance tap wire that small of a gauge to make it matter, but with extremely small gauge, yes that is theoretically possible. However, that being said, no charger has lab-grade precision for IR readings to do that fine level of balancing (even my PowerLa. 8 Revolectrix charger which is considered the most accurate charger on the market with the highest precision available to the consumer); b) the JR connectors used have too low of a clamping force to even keep resistance readings perfectly accurate anyway. Basically in this application it’s irrelevant is the point, unless the balance leads are wildly differing lengths. If you want an accurate IR reading of cells, the ONLY accurate way to get that on the consumer level is Wayne Giles IR meter which is borderline lab grade precision for this application.
thanks for the info. though, i didn't talk about IR measuring, but the process of balance charging. you know, someone could get really thin chinese wires like 26-28AWG - imho, it will matter. yes, consumer chargers aren't that precise, sometimes up to 50mV or even higher - that's sad. for ex, IMAX B6 Mini's voltage readings are different depending on the range - it looks like divider switching. and yes, those balance connectors are crap :(. i think they're called JST-XH
Cool video. If I crash my car and it starts to tear the battery protector off, is there a way to keep this from happening? Also, at what point do I not use the battery any more? Last night I noticed some foil from one of the cells tearing. Is it a compleat loss of the battery? Or can I wrap it back up and continue running it?
@@popwall4297 I removed the one damaged cell and discharged it to 0 volts. I carefully calculated the cost of one battery to a burning house and decided it would be cheaper to just buy a new battery.
You dont repair a damaged lipo you throw it away! Theres guys on utube that say use a nimh charger but dont do it! Its not worth a fire for a 30.00 Battery! Lipo’s are pretty safe if you charge them properly but when its dead throw it out if it has a low cell throw it out if it swells throw it out dont try to fix any damaged lipo!!
NO. YOU are wrong, the title is RIGHT! he repaired a LiPo BATTERY by replacing the dead/bad CELL or resolder a detached wire!, understand the difference between a CELL and a BATTERY.
@@EliteGeeks NO. YOU are wrong, the title is RIGHT! he repaired a LiPo BATTERY by replacing the dead/bad CELL or resolder a detached wire!, understand the difference between a CELL and a BATTERY.
I need a little advice for my situation, noticed one of the leads on my pack, I could see the exposed wire on the negative side at the base of the wire, it doesnt really look like the insulation broke, just got pulled away somehow, theyre hobby store brand batteries, so probably not the greatest, I was wondering if jamming some brush on tape down the hole would be good enough to protect them, or if I should dissasemble them and put some shrink tubes like you did. Never pulled one apart before so your video was informative to give me an idea of what to expect. Thanks!
Hows that liquid flux workn for you. I use the Oatey brand no.95 and the Oatey h20 based flux which is amazing and safe for pcb plus washes off easier...warm water & soap if applicable
MickyMouseLimited Hi Alex. I absolutely would for you however I don’t have any 4000-5000mah sized lipo cells not in use right now. :( Check out the Hobbyking Graphene packs as they’re currently my favourite cells and relatively inexpensive!
Very good job my man. I have a question my packs were damaged in a crash the cell count is still fine but my packs have a dent in them is this a issue of concern nothing eles looks disrupted. I will inspect with the knoledge i just obtained thanks friend
Nathan Thomas you should be okay, however it’s worth keeping a very close eye on that Lipo, especially when charging it. Also make sure you store it in a fireproof container/area just to be sure. It should be fine from my own experiences of crashed race drone lipos, but occasionally when the cell is damaged badly enough or the cell’s pouch itself if spit open that cell won’t hold voltage or a proper charge long. I usually just pull the pack apart and remove the bad cell and use it for another application at that point. Thanks for the kind words!
Eganwp nice clip, what shoukd i do with a 3s one cells has 5 volts whike other two ran down i dont get how can happen when i bought with another one that is puffy still works great its so out balance wont charge o tried all tricks scared going go on fire been there done that like gasoline i payed too much from tower 90 wondering take it back its few months old thanks any help
Bro, that's 45 minutes of you taking a battery apart and then putting it back together. You could have just spliced new wires on and called it good. It probably would have been safer too. I was hoping to see how to take the cells apart and gain a better understanding of that.
Gamers-Room don't repair find a way to get rid of it safely call the manufacturer maybe they'll replace it in warranty one of my drone batteries did this they didn't even want it back they said it was too dangerous to ship so they just sent me a new one
Hey man nice vid i wont to make my 4s to 3s cell number one is Damage how can i do this with the Balacer Leds ??? Im not sure about this. Please Help its my last LIPO and i will go out Fly XD
@@ian-ts really! You obviously know nothing about lipo batteries. They are dangerous when they are damaged or puffed and will catch fire. A fire is not worth the price of a new one thats why!!!
This is the worst video title i have ever seen...you didn't indicate the battery configuration, you didn't show how the cells are positioned. The only thing you showed is how you got trained in soldering !! lol ...
lol, this video is 7 years old. If you don’t understand how to wire a battery in series vs parallel and how to connect the wiring between the cells, BMS and pack leads, you shouldn’t be rebuilding or taking batteries apart in the first place. 🤡😂
Perfect !!! Whole rebuild was done very meticulously and with extreme safety and precision. Excellent job 👍
Hahahah did you say “Extreme safety”? Truly, was it? May be using a box cutter on polymer packet was extreme safe, yeah… sure. Thanks …
Thank you! 🥰
hey great job! any newb out there now has a clear, concise, down to earth guide to "Repair" their own battery pack.
Seriously guys do you really need it spelled out for you. its simply the knowledge of the entire build or breakdown of a lipo battery with which you can then repair anything on yours. why not say thank you and not show your ignorance and lack of appreciation.
Mikz Bikz ikr
Ppl want everything instantly no effort do you really want ppl asking those questions taking apart a lipo battery it may be easier to buy new pack safer if your not mechanical or intellectual if i didnt pay 90 for pack still looks great next one i bought same time idk worth time at least now but appreciate picking up some knowledge wo opening pack myself thanks brotherman very professional job better than ones we buying from china for sure these smart asses dont appreciate good work
Alot that stuff if your mechanic going do just knowing but very detailed im older still amazed by youtube feel like knowledge out there be a rocket scientict all about if your able to grasp and apply how dedicated you are or can be any kid willing learn yhis very informative👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍i want send you battery for free just dont go waste not that i have money i got back into hobby almost burny house down messing arounfmdbeing cheapo
Mikz Bikz well said buddy
Thanks for the kind words man. I was just going to say, this was 7 years ago! If people don’t know how to wire cells in series & parallel, how to connect them to the BMS or main pack leads, they definitely shouldn’t be tearing down batteries in the first place. lol. 😂 Thanks for the kind words!
You are the best. Chopped off my balance leads yesterday and I was looking for how to arrange the wires. Your video answered my questions. Thanks a lot.
Great Video. I purchased a 6s and cell 5 is not showing a reading on my Lipo battery checker. I now know how to repair the balance plug solder joint’s.
I didn't need this info but for some reason I had to stick around for the whole thing. 👍 good video. Hopefully ppl take this seriously, especially the safety pointers, and not have to replace fixable packs.
Great vid man excellent how to I feel like I have learned the right way to solder a pack start to finish now I know what I’m doing wrong 🙏 thank you!!
Tip: if you want to get of the old solder, rather than shaking the bat pack when the solder is hot and liquid, just hold it upside down and let the solder run to the solder iron, you’ll get 99% of tje old solder out. Them shake the solder iron. Much efective and easy
I use those same amass xt60 and xt90 connectors. The plastic grip piece your talking about that snaps into place is to eliminate the use of shrink / heat tape. Their called shrink tubeless connectors or something like that.
Awesome and safe video!
My 8th scale truggy did cartwheels running 6s at 50+ mph today and slung a brand new(2 days old) 60c 3s about 20 feet in the air...pretty good ding and a crease on the top cell but was still balanced perfectly down to a thousandth of a volt so I slammed her back in there and ran it down. No temp issues or anything stupid but I am still keeping a eye on it...will attempt a safe charge outside in my metal trash can hopefully no magic smoke is needed.
Oof, better use hardcase for bashing
092722/0247h PST 🇺🇸 Thank you for the video. I’m still puzzled, as to why you detached all the cables….May be you know what you are doing, but, the viewers don’t. May be this is an instructional video on “How to desolder and resolder cables.”
Using a knife on Lithium Polymer Cell (Battery) polymer Packet…. But it was nice to see that. Thanks again. Regards.
Liked your program on repairing a lypo. Ive tryed fixing or frankensteining so batteries they usualy end up in the recycle because the conectors are but a strip of foil and thats hard to solder. They usualy die in a big puff of smoke or there nothing to solder to.
Anyway here an idea for a show
I had a blade Chroma and loved it. My buddy chalenged me to follow his DJI 4 pro
Well at 1700 metters my Chroma went in to shock and died probebly battery died or something.
It fell and my buddy had his camera pointing down as hes trying to follow it and laughing at my dying drone. I got my drone, one arm torn off and the rest a pile of pastic bits. The only thing that survived are the motors. I want to build a drone with a carbon fiber or molded fiberglass body . I want to put the motors that survived on and i have a beebop 2 that still flyes take the mainboard and join it with the motors.i think that would be a killer heavy drone . Now im hoping that the beebop board will be able to supply enough power for the motors and i have a spare 5040 mA battery that volunteared to be power the part i need help at is the wiring of batery to board the main battery has a positif and negatif , the board has a multy plugg with 10 connector how do i take a battery with 2 wires and connect 10 points.i will tear a beebop battery appart to see how the cell are connected to the pluggand how do i know wich wires coming from the board to connect to the motorboth have 3 wires but diferent colours. Hope you can help. I frankenstein drones all the time but there beebop size or smaller .i was going to send some pics of my drone collection but theres no attach a file link on your coments. Keeping an eye out for your episodes
HandyDan
Thanks i didnt know how to fix my balance leads until you showed me
I recommend using a solder wick or solder vacuum, much quicker much more thorough than “heat and shake”
Kudos for stressing the importance of the flux. Most youtube experts seem to think that the flux inside the solder is all you need - which says a lot about youtube experts.
Nice work very informative video on safe Lipo battery repair. I have a few myself to repair this video has helped heaps thanks.
Thanks a lot for this video! Really gives me more confident on a project I have in mind for replacing a dead cell on one of my 4S batteries... Where can I find more information about what things should I consider when selecting the replacement cell?? Ant suggestions overall?
Thank you very much for this, really helped me to feel significantly more confident approaching this project! Cheers mate
did your house burn down yet?
What size heat shrink
shortening balance leads are actually not recommended, because of different resistance. so you'll get wrong (yeah, it maybe like 5mV only, but anyway) voltage reading when balancing.
this mostly applies for thin conductors and less important for thicker wires. also, it depends on balancing current which (on passive type of BMS/chargers) are enabled in parallel to get some current away from cell when charging or discharging (but always for higher v/cell)...
and the flux residues (don't know which type you use, but anyway) should be washed away with smth like isopropyl alcohol (IPA) or acetone, otherwise it will ease the corrosion over time.
winex You’re correct and thanks for the comment, however on all LiPo batteries I’ve ever seen and handled the past 10 years in this hobby, I’ve never ever seen a balance tap wire that small of a gauge to make it matter, but with extremely small gauge, yes that is theoretically possible. However, that being said, no charger has lab-grade precision for IR readings to do that fine level of balancing (even my PowerLa. 8 Revolectrix charger which is considered the most accurate charger on the market with the highest precision available to the consumer); b) the JR connectors used have too low of a clamping force to even keep resistance readings perfectly accurate anyway. Basically in this application it’s irrelevant is the point, unless the balance leads are wildly differing lengths. If you want an accurate IR reading of cells, the ONLY accurate way to get that on the consumer level is Wayne Giles IR meter which is borderline lab grade precision for this application.
thanks for the info. though, i didn't talk about IR measuring, but the process of balance charging. you know, someone could get really thin chinese wires like 26-28AWG - imho, it will matter.
yes, consumer chargers aren't that precise, sometimes up to 50mV or even higher - that's sad.
for ex, IMAX B6 Mini's voltage readings are different depending on the range - it looks like divider switching.
and yes, those balance connectors are crap :(. i think they're called JST-XH
No - its the main lead that is recc'd not to change length. Balance leads don't care.
WHERE u get the 700 soldering tool mine does not go over 500 and i could not desalter it ?
Really nice video, subscribed! Feel more confidant repairing a good pack with damaged balance leads.
Enjoyed watching someone take pride in what they do. Subbed A++
What size is the large shrink tube
is it possible to separate the cells one by one ? are they glued ?
Flinging hot solder through the air. Genius.
Cool video. If I crash my car and it starts to tear the battery protector off, is there a way to keep this from happening? Also, at what point do I not use the battery any more? Last night I noticed some foil from one of the cells tearing. Is it a compleat loss of the battery? Or can I wrap it back up and continue running it?
@@popwall4297 I removed the one damaged cell and discharged it to 0 volts. I carefully calculated the cost of one battery to a burning house and decided it would be cheaper to just buy a new battery.
Can this work with the phantom 2 battery plz butly a infated battery plz so i can do it to mine thx
so did you manage to repair the battery?
my lipo battery is not functioning due to installation on the upside down esc ... is there a break in the cable,,,,thank you.
How do you no pos side and neg if you have a loose cell with no wires
That is a pretty job! Thanks for showing me. I won't throw out another pack again!
Beautiful work. Thanks for the detailed vid.
I was expecting you to repair a Damaged Lipo Battery - Like it says in the title. !
this title is wrong... should be, how to Reterminal a Lipo
You dont repair a damaged lipo you throw it away! Theres guys on utube that say use a nimh charger but dont do it! Its not worth a fire for a 30.00
Battery! Lipo’s are pretty safe if you charge them properly but when its dead throw it out if it has a low cell throw it out if it swells throw it out dont try to fix any damaged lipo!!
NO. YOU are wrong, the title is RIGHT! he repaired a LiPo BATTERY by replacing the dead/bad CELL or resolder a detached wire!, understand the difference between a CELL and a BATTERY.
@@EliteGeeks NO. YOU are wrong, the title is RIGHT! he repaired a LiPo BATTERY by replacing the dead/bad CELL or resolder a detached wire!, understand the difference between a CELL and a BATTERY.
I need a little advice for my situation, noticed one of the leads on my pack, I could see the exposed wire on the negative side at the base of the wire, it doesnt really look like the insulation broke, just got pulled away somehow, theyre hobby store brand batteries, so probably not the greatest, I was wondering if jamming some brush on tape down the hole would be good enough to protect them, or if I should dissasemble them and put some shrink tubes like you did. Never pulled one apart before so your video was informative to give me an idea of what to expect. Thanks!
That was a great video. Even though it was long. The info was priceless! Great job!
Hows that liquid flux workn for you. I use the Oatey brand no.95 and the Oatey h20 based flux which is amazing and safe for pcb plus washes off easier...warm water & soap if applicable
over 3 years old this video, doubt he will answer
I like jelly/wax style.
Thanks man. Cheers from Ontario.
By the way the shiny solder has lead in it the dull solder doesn't have lead in it. It doesn't mean anything about a cold joint.
Wrong.
watching this before i attempt to resolder one of my balance leads which has snapped inside the lipo
what kinda flux? we use bear fat. Don't know if it works on aluminum tabs.
Awesome thanks
Nice job m8 looks like you just got it 👍👍👍👍👍
Hi, what is the correct type of solder should i use?
electronic solder, the ideal alloy is 63/37
Thanks very good info
I have a new never used gen ace 4 cell 2200 MHz lipo it’s only reading cells 1 & 2 and the connections are hooked up what can I do to fix
You throw it out! Dont mess with lipo batteries its not worth a fire!
If you have a damaged lipo just discharge and get rid of it, don't die in a house fire
Nice work dude Subscribed 👍👍👍
Do you make batteries for sale? If you make a 2 cell from recycled cells i could buy one or 2 as long as they are 4000 or 5000 mah 25c. Thanks
Alex
MickyMouseLimited Hi Alex. I absolutely would for you however I don’t have any 4000-5000mah sized lipo cells not in use right now. :( Check out the Hobbyking Graphene packs as they’re currently my favourite cells and relatively inexpensive!
This is about changing damaged cables safely (all) ...
Very good job my man. I have a question my packs were damaged in a crash the cell count is still fine but my packs have a dent in them is this a issue of concern nothing eles looks disrupted. I will inspect with the knoledge i just obtained thanks friend
Nathan Thomas you should be okay, however it’s worth keeping a very close eye on that Lipo, especially when charging it. Also make sure you store it in a fireproof container/area just to be sure. It should be fine from my own experiences of crashed race drone lipos, but occasionally when the cell is damaged badly enough or the cell’s pouch itself if spit open that cell won’t hold voltage or a proper charge long. I usually just pull the pack apart and remove the bad cell and use it for another application at that point. Thanks for the kind words!
Eganwp nice clip, what shoukd i do with a 3s one cells has 5 volts whike other two ran down i dont get how can happen when i bought with another one that is puffy still works great its so out balance wont charge o tried all tricks scared going go on fire been there done that like gasoline i payed too much from tower 90 wondering take it back its few months old thanks any help
Nice professional job
I feel like cause i paid 100 buxb3s i have salvage two that good if thats the issue what normal amont cycles or warentee if paying top dollar
What's SODDER?
Nice video, but the angle of the camera didn't help at all.
I may be wrong but the purpose of Flux is to Chemically clean the surface your are soldering
Great vid man
Bro, that's 45 minutes of you taking a battery apart and then putting it back together. You could have just spliced new wires on and called it good. It probably would have been safer too. I was hoping to see how to take the cells apart and gain a better understanding of that.
What was wrong with it that you needed to take it apart
Nice job, i have one that puff can you Made a vídeo un how to rapair too? , thanks and goodluck
Gamers-Room don't repair find a way to get rid of it safely call the manufacturer maybe they'll replace it in warranty one of my drone batteries did this they didn't even want it back they said it was too dangerous to ship so they just sent me a new one
Sodder or Solder...that is the question
First surely is to take a marker pen and mark + ... - so you don't make mistake ?
Hey man nice vid i wont to make my 4s to 3s cell number one is Damage how can i do this with the Balacer Leds ??? Im not sure about this. Please Help its my last LIPO and i will go out Fly XD
yeah don't short it out that's when you get an explosion . please don't do this
Well for removing excessive tin/solder use a tin sucker/ tin vacuüm pomp/tool or litze copper wire. Throwing hot solder is risky.
Maybe...
👌🏼👌🏼👍🏾👍🏾👍🏾👍🏾👏🏼👏🏼👏🏼
I don't do flying rc but I do truck cars boats
Nice, but I was expecting you to replace a cell...
WTF you repaired ? You changet some wires !
TH-cam blacked out your video
Solo viendo por que no entiendo inglés.
NEVER EVER try to repair a lipo battery if its damaged throw it in a bucket of salt water over night and throw it out PERIOD
@@ian-ts really! You obviously know nothing about lipo batteries. They are dangerous when they are damaged or puffed and will catch fire. A fire is not worth the price of a new one thats why!!!
Where is the damaged lipo?
just replace leads ,nothing was done in the battery cells ,big woof
kya mujhe aapka mob.no. mil sakta he
I sub
its a stetson
waited to see how you were going to do the connector at the end and thats the only thing you didnt do Noooooooooooo
Maybe not...
Battery wasn't damaged
NO Sound
If you know how it's correctly pronounced then pronounce it correctly !!
Why cant Americans say SOLDER !!
Why can't Brits say Worcestershire?
To much talk for a little job....unnecessary video.
This is the worst video title i have ever seen...you didn't indicate the battery configuration, you didn't show how the cells are positioned. The only thing you showed is how you got trained in soldering !! lol ...
lol, this video is 7 years old. If you don’t understand how to wire a battery in series vs parallel and how to connect the wiring between the cells, BMS and pack leads, you shouldn’t be rebuilding or taking batteries apart in the first place. 🤡😂
NICE JOB MAN.
GREAT VIDEO NICE VIDEO FLOW., NOT ANY UMS AND USSSSS