XIAOMI PRO2 Battery - Repair 1 [Teardown & Cell Swap]

Рет қаралды 23,125

2 жыл бұрын

Unfortunately, the fix was heavily misguided towards the actual cells - which - as far as my curent understanding of the situation goes - are not to blame.
In a future installment I'll be taking a look at the decoupling caps used by the TI overvoltage protection chip, which, I now am looking very suspiciously towards.

Пікірлер: 45

@benhonna 2 жыл бұрын

I commend you for seeing it through, this looked like a pain… also the rotating scooter interludes were a nice touch. 😂

@Darieee 2 жыл бұрын

aye - I'm glad someone enjoyed my transitions ❤️ hope you're well man 🤘🤘

@ghitsbatou 2 жыл бұрын

man this is struggle. You are a hero doing it

@Darieee Жыл бұрын

2nd intervention: kzfaq.info/get/bejne/mdSJi7xorpuWhmg.html 3rd intervention: kzfaq.info/get/bejne/os2Gq9SStM2ogZc.html

@spazmochad Жыл бұрын

Don't suppose you have a link to the spot welder and lipo battery charger/discharger/tester I see you using in your videos?

@Darieee Жыл бұрын

I even made a video on it 🤘 kzfaq.info/get/bejne/lcp8a8t0sqnSnI0.html

@yahnsolo 2 жыл бұрын

Very nice video, as usual! Thank you for sharing

@Darieee 2 жыл бұрын

glad people are enjoying them 🤘 thanks for the kind words

@daand12 2 жыл бұрын

Next time charge the low bank back to 4.15v to match the rest. Mine also have cfw with external battery to keep the battery low on the internal battery. Bank 1 on mine is always behind after a full charge way up to 41.95v using a AliExpress charger using a XT60 bypass plug. All cells at 4.20-4.22v when bank 1 is at 4.17v

@RMFUNTIK Ай бұрын

It's a pain in the ass to change them.. today did this job, but I didn't have any spot welder, had to manual solder everything...

@steebbo9460 2 жыл бұрын

How can I add a different bms I have a 30 amp bms I want to put on it

@LessThanCapable Жыл бұрын

Thanks for this video, now I know I just have to buy a new scooter!

@eutavi 2 жыл бұрын

Thank you for you video! It made me NOT open my battery for a peak inside :)) what software are you using to read cells voltages?

@Darieee 2 жыл бұрын

check the g30max LD battery too - you'll love it 🔥 m365 tools is the name of the app - unfortunately it's android only

@ivannpatras363 3 ай бұрын

HY! What kind of transparent silicone sealant did you use in the syringe, can you please give me a link to where you bought it? Thank

@wettuga2762 22 күн бұрын

Awesome detailed tutorial, even though I wouldn't dare messing around with batteries, it's still nice to see someone solving these kind of problems. My Pro 2 tail light stopped working, and I noticed the cable comes directly from the battery and is only outputting 0.85v. Could it be the controller inside the battery, or other component outside of it telling the battery to output the wrong voltage?

@Darieee 22 күн бұрын

the battery just passes that wire right through maybe you have some corrosion on the BMS connector (the one that plugs into the ESC)

@MLS.22 5 ай бұрын

I have the same battery the BSM shows completely different voltage compared to the multimeter says, multimeter show all the value but BSM show cell one 3.2V and cell two 3.8V and the rest 3.6V

@kenarf3332 2 жыл бұрын

Dashboard?

@coolspotdrakensangonline6765 Жыл бұрын

i have a question what are the elements inside the original pro 2 battery?What manufacturer and model and are they same in all pro 2 batteries or they put different ones?I know about m365 LG , EVE and BAK but what about pro 2 what its inside the original baterries?

@Darieee Жыл бұрын

all the ones I've seen are packed with LG MH1 cells

@coolspotdrakensangonline6765 Жыл бұрын

@@Darieee thanks alot, do you think if i add a second original battery via Y cable will work out (the bmses wont do conflicts each other because both will be original) ? Just for more distance.Now i have custom 2nd battery 36v 12800mah added but i want to to change it with original pro 2 battery because i find em cheap.

@eliasgus4035 Жыл бұрын

thank you...my pro 2 died recently too ;(

@Darieee Жыл бұрын

how ??

@eliasgus4035 Жыл бұрын

@@Darieee 1 of 10 cells is dead. I need to replace it like you

@Darieee Жыл бұрын

pro2 ?? check my latest video on this (pro2 battery repair 2) and try charging that bank up first there might be a BMS fault killing these banks ...

@vcdroneGR 4 ай бұрын

What kind of little screws are down the scooter cover? Is that an allen or a torx (star style) screws and what size?

@Darieee 4 ай бұрын

I think those are torx T8

@vcdroneGR 4 ай бұрын

@@Darieee thank you🙏

@vcdroneGR 4 ай бұрын

@@Darieee these are torx T10 eventually as I moved the undercover of the scooter 😉 before taking apart the battery inside for balancing the cells do you believe I might try to charge the battery just bypassing the BMS cable to the controller? Since I have an unbalanced cell pack (about 3,750v when fully charged) is it going to charge any further bypassing the BMS I wonder? Or other cell packs will charge upwards as well and that will press the battery in total?

@Darieee 4 ай бұрын

@@vcdroneGR all the BMS work is done inside the battery - and no ballancing will occur without the BMS inside the battery ... unfortunately you'll have to open'er up and work on a per-bank basis to asses the situation do keep us updated with what you find in there though 😀, sounds interesting !

@vcdroneGR 4 ай бұрын

@@Darieee OK I understand what you say. Since the BMS is inside the battery and connected with cells (the blue light is blinking even I disconnect the bms cable from controller) maybe if I disconnect the BMS ribbon cable from the banks inside the battery and then give a try to charge without BMS 🤔 but I don't know if the battery is charging then if it is designed to work only with BMS on it. Otherwise I will charge single cells separately with my imax hobby charger at 1s 4.2v max to align them with current voltage 😎

@Sellutin Жыл бұрын

My battery case end part was fucking glued and everything to its place bonus the screws.

@jameelahmed840 Жыл бұрын

If i take the metal casing off can i put the battery in a standard xioami 365

@Darieee Жыл бұрын

you can, but you'd have to find a way to hold it in snugly ✌️

@Darieee Жыл бұрын

I'm not sure it fits even with that metal casing off though ..

@SchwaboT5 7 ай бұрын

Holy shit. I hope nobody try the same after watching 🤦‍♂️🤦‍♂️. Please just do those Things with enough know how

@zmafia666564 Жыл бұрын

Круто

@klaasj7808 Жыл бұрын

hmm were can i buy original battery, everywhere those aliexpress crap is for sale, i dont like those. as i dont like fake lithium ion batteries and i dont like my house to burn down. just my 2 cents

@Darieee Жыл бұрын

veeeery tough .. I managed to score an original 0 cycle one off my local ebay type website .. I still can't imagine how that battery came to exist .. but it's in my scooter and is working fine .. basically a newer used one would be your best bet - or contact your local xiaomi service to see if they'll sell you one

@klaasj7808 Жыл бұрын

@@Darieee they dont i called the headquarters in my country. it comes down to just throw it away. i hate that spirit

@Darieee Жыл бұрын

@@klaasj7808 yeah .. that really sucks .. what country is it btw ? maybe you can coax the service people into selling you one ..

@DenisBilurka Жыл бұрын

Bro where can i order battery for my scooter? Im moving to canada and thing is i cant ship it with battery, so I thought about taking one out and buying new one there, but i cant find shit