Bosch Powerpack BMS repair

[@LePermutant]

After loosing time and money with two battery repair companies who said they can't do anything for my BOSCH battery, I sent it to Wim and he brought it back to life ! So Happy ! Great thank you Wim for your help. You are Top !

[@martman1000]

I cannot thank Wim enough! Having watched this video and then contacting him for advice, he was just so helpful from the start. I ended up sending my BMS (plus one I got from eBay) to him and the turnaround was really quick, the price was great and I now have 2 working BMS. My local bosch service centre were no help at all, but 'kindly' offered to take my powerpack off my hands for recycling.... Thanks Wim, absolutely top service

[@pubecdela1526]

Hi there, can you tell me how you contacted him to ship your item? I can't find contact details? I want to have my BMS repaired thank you for your answer

[@DarrellEaton]

Sent a faulty Bosch powerpack 500 BMS board to Wim, he diagnosed and fixed the issue, put the BMS back in the powerpack, now working a treat. No help from Bosch at all, complete waste of time. Wim did a fantastic job, thank you Wim 👍

[@wim4245]

Thanks, Darrell! Glad I could help.

[@ChrisK-rz1sy]

I have a dead powertube 500. What to do?

[@richardpowell1923]

@@wim4245 Hi Wim. I Think I have the same problem with my Powerpack 500. Can I send it to you for a repair from the uk ?

[@WillemRVerweij]

A real joy watching hing this very instructive video. Very nice materials/tools (tin’suction’ device, board’clamp’ etc.) and taking proper care of your health (‘fume hood’/air suction). Keep up the good work and great posts.

[@WillemRVerweij]

A real joy watching this very instructive video. Very nice materials/tools (tin’suction’ device, board’clamp’ etc.) and taking proper care of your health (‘fume hood’/air suction). Keep up the good work and great posts

[@Quasam]

Good video. Some closeups of the board would be great.

[@MantasLT]

Wim, you are good at this, clearly. You should make more videos and share your talent with the world:D

[@jondoe8o]

Yes please!!!

[@nathvanvolsom5213]

This diode was in short on my BMS too! Thank’s a lot!!!

[@michelbrantjes7036]

hey Wim bedankt man!!! dank zij jou mijn accu zelf gerepareerd ,was gelukkig alleen de diode

[@Ditsii]

Have you already had the case that for example three of the LEDs are on after pressing the button but charging still doesn‘t work? I measured the 5V and they are okay. Also the charger is working with another battery and the cells are balanced as well. Would be nice to get any help!

[@herve_suntrip]

TK for this good vidéo Where can i buy the Schottky Diode ? What is the references of this diode

[@wim4245]

Best to use an SS16

[@jacek7092]

What is the three pin plug?

[@wim4245]

CANbus + charge signal

[@jacek7092]

@@wim4245 Do you know some way to start driver without CANbus?

[@wim4245]

@@jacek7092 You have to send the right CAN signal to activate the battery, it won't work without.

[@suzannewerkman5528]

Hi Wim, What a great video. Could you send me a list of the tools you use for the repair?

[@wim4245]

Any rework station will work

[@wouterkeuleers9872]

Ik ga direct mijn powerpack eens openhalen! zalige video!

[@Fhilipk]

Nice work! What is that solder sucktion gun calld? Is it possible to have a closer camera picture so its easy to actually se whats done? Did you just refloo?

[@davidf.8497]

Shame we don't get close enough, can't really see what you're doing. Thanks anyway!

[@juleol99]

Some closeups of the defective diode and its spec eould be awsome!

[@wim4245]

Use a SS16

[@megszalott]

Can you please give me an advice? I'm familiar with motherboard repair. So I have a few BMSs like this. I found traces of liquid damage, but the diode and the power chips are fine. No short circuit on the board, and the 36v rail is ok. The balancer stuff is ok. But when I plug it in, it flickers the 2 and 4 leds which is an error. What could be the problem with the board? Edit: The cells which I connect to test, are good cells, and i have working boards also, so I measured everything and they are the same. I mean I measured it when not connected to power. I'm new these boards, and don't know what volts should be where, like for example on a laptop motherboard, or BMS.

[@wim4245]

Could have multiple causes. Probably caused due to the current measuring circuit. Needs to be cleared with diagnostics software after repair.

[@megszalott]

@@wim4245 I will solder the BMS to some good Bosch cell pack and take it to a guy who has the software. I know, I have to be in contract with Bosch to have the software, and that is why the EU manufacturers will go down the drain. I can program any Bafang I want if I buy the tools.

[@TheDjforlife]

Hallo Wim, Ik ben op zoek naar een vervang BMS voor een powerpack 400, aangezien het 10 pinnig IC tje naast de diode op het 1ste zicht opgerookt is alsook de diod

[@wim4245]

Stuur even een mailtje (zie "About" in dit kanaal). Dat is de spanningsregelaar en is meestal perfect te herstellen.

[@erwinbuiter3581]

Vandaag bij de dealer geweest waar ik mijn Gazelle e-bike vandaan heb. Hij heeft geconstateerd dat er waterschade in de accu zit. Is overigens ook te zien, dat er condens zit in het gedeelte van de laadindicator. voorheen laadde hij nog op, maar nu beginnen het 2e en 4e lampje te knipperen. is dit nog te herstellen? of moet ik de accu laten vervangen? Ik kreeg als advies nog om m op de kachel te laten drogen, al gaf hij er wel weinig hoop op, en raadde mij aan om een andere accu te kopen.

[@wim4245]

Hangt ervan af hoeveel schade er is. Mag je in ieder geval niet te lang mee wachten.

[@kraftmanjpp3160]

Dag Wim, batterij geopend, zie veel waterdruppels, lampjes werken niet, maar laad wel op! batterij gemeten en helft geeft 25v en ander helft 1.2v. bitter weinig lijkt me. plaatje lijkt me wel door corrosie aangetast, heb het wel schoongemaakt maar is duidelijk zwart aan de zijde van de lampjes. zijn deze apart te verkrijgen? of alsnog te repareren??

[@dansicomas]

Hi. Great video . I have problem disconecting wires from PCB. Soldering iron at 450 Celsius!!!. What went wrong?

[@wim4245]

Not enough power or oxidised tip. I can solder them fine with my 130 watt JCB.

[@jan-k1i]

wim, geweldig alleen welke diode, staat nl niets op en dan ook nog waar te verkrijgen ??

[@wim4245]

SS16

[@tominterrupto]

Hi Wim, Can you answer a question? If the diode is blown will any lights come on. Conversely if a battery is not working but the lights come on - can you be sure that the diode has not blown? cheers Tommy B.

[@wim4245]

If the diode is shorted, the LEDs will do nothing. If the LEDs work, the diode is fine. There can be many other problems.

[@philippebaetens]

Ik heb een 400 pack die niet meer werkt. Ik zie wel 4 leds, maar laadt niet en geen communicatie met display. Met een andere batterij werkt alles wel. Heb de cellen gemeten, die zijn 3.8v Enig idee?

[@jamalboundouz4503]

Bonjour Wim. Please, j'ai la diode 2 et 4 qui clignote quand je veux charger ou j'appuie sur le bouton. Merci pour votre retour

[@SebasLenting]

Welke diode moet er in ik wil dit zelf ook doen alleen ik weet niet waar ik hem moet bestellen en welke

[@richardhasler6718]

Thanks Wim, this was a great video. I saw you try to repair a Shimano Steps battery but it was not possible because of the thermal sensors glued in between the cells. Do you think Bosch battery packs are easier to repair and if so, should I look to buy a Bosch powered ebike instead of a Shimano system if they are easier to repair?

[@wim4245]

I think that was a video from The Battery Doctor ;) I don't do Shimano at the moment, only Bosch. Bosch has quality stuff, but they don't support repair (they only want to sell you new batteries or motors). Everything is repairable, but you'll have to find someone who has experience.

[@richardhasler6718]

@@wim4245 Thanks Wim, yes I agree with you everything should be repaired if possible otherwise we just feed the 'capitalist monster' and turn the world into a rubbish dump of broken products that could be used again! Great to know there are people like you out there..

[@gerardbrouwer2581]

@@richardhasler6718 I don't know how hard it is to repair or take apart a Shimano pack but it can't be worse then the ones from gazelle

[@jondoe8o]

@@wim4245 please share more of your experience! It’s needed badly!

[@brunodefeyter7731]

mijn powerpack is ook defect, waar kan men de diode kopen en welk type moet ik hebben? Kan ik mij bord eventueel opsturen voor herstelling? en wat vraag je ervoor?

[@rduwe9466]

nice video but please some closeups on next videos , looking out for your next videos

[@daven6673]

Hier ook een batterypack 500 met led 2 en 4 die knipperen op de accu. Laden kan niet meer. Handleiding zegt dat de accu defect is, meer niet... is hier ook de bms stuk of eerder de cellen? De leds, de printplaat vertonen wel vochtsporen

[@wim4245]

Waterschade moet hersteld worden en foutcode gereset met diagnosesoftware (op voorwaarde dat er geen schade is aan de cellen).

[@bladermusics]

Wim, what do you think about a blown microcontroller? Should I just simply buy a new bms instead?

[@wim4245]

If the MCU is shorted, a new BMS is the easiest solution. If you have a BMS with water damage, you could swap the MCU. Keep in mind that other components on the 5 V and 3.3 V are probably also blown and in need of replacement.

[@bladermusics]

@@wim4245 thanks for the fast reply, then I'll keep this BMS as a spare and just buy another BMS.

[@mattburton5989]

Hi which end does the cathode go to? The outside of the board (towards + leads) or the inside of the board? The one I removed had no visible band and everything seems to be a short circuit on both sides of the trace. I can supply 5V to the outside pad and get the lights to light up though. With diode removed (all packs are showing 4V and seem to be good) I get 1.2V on the outside pad.

[@wim4245]

The cathode goes to the outside of te board (FET's).

[@trystantavener666]

Hi, great video thanks. Which diode model is it please

[@wim4245]

SS14 or SS16 (preferred)

[@CazGreenslade]

Hi Wim i have a problem with the BMS on my power pack 400, how do i find you? thanks

[@anwaramellal9584]

It’s work Thank you so much. Keep going 🤙🏽🤙🏽

[@MichielHanssens]

Hallo dag Wim , bedankt voor u video, Kan het zijn dat er origineel eerst een andere diode in zat ? omdat ik op de diode van nu geen ss14 of ss16 zie staan, Alvast bedankt

[@wim4245]

Origineel is het een SS14, maar dat staat er niet op.

[@MichaelBetzner-v9w]

Wim - I have a Powerpack 400 that just stopped working or taking a charge. Shows one light when I press the button, but no flashing occurs when plugged in. Other Powerpacks work just fine on the bike. Can't seem to find anyone in Canada to work on these Powerpacks. Wondering if I can send you the battery and of course pay you to repair it? Can't seem to find you email to send a direct message. Thanks for the consideration and for sharing your expertise.

[@wim4245]

Probably water damage or faulty cells. I'm afraid I can't help you, shipping used lithium ion batteries in and out the EU is impossible.

[@wimdikkema]

Hé. Wim. Can you fix de Bosch classic bms?

[@wim4245]

Depends on what the problem is. I don’t have many parts for them in stock, since they are becoming pretty rare. The older they get, the less interesting to repair (the cells also degrade).

[@user-jl6no3by1t]

Beste Wim, heb een Bosch accu die geen snelheid meer aangeeft en geen ondersteuning met fietsen. Wat gaat het kosten op dit te repareren? Hoor het graag. Met vriendelijke groet, Hans Leende

[@wimdikkema]

Kan niet worden gerepareerd worden

[@AntoninoNicoletti]

Thank you, great video. I have a Bosch PowerTube 500 that refuses to charge and that displays 2 flashing LEDs when I plug it to the charger or when I press the charge control button on the battery with this disposition of the LEDs: Yes No Yes No. I tried to maintain the control button pressed for 30s to reset the pack but I've still the same issue. Do you a have a clue of what is going on? The pack is two-year-old with probably >500 charges (I use it almost everyday to go to work). I hope that it is not dead. I used it yesterday and after my drive, the load was low but not at zero.

[@wim4245]

LED 2+4 is an error code that needs to be cleared with Bosch diagnostics software. I could be caused by moisture, but there are several possible causes.

[@marcricci7298]

Hi... should the battery have an output of 42volts standalone when checking with the multimeter? I am getting variable voltage output of between 9 and 10 volts at battery output and 41.0 volts across the opened battery pack. Would the controller send data over battery data wires to BMS to switch and increase battery output to 41.0 volts? Many thanks... I bought gazelle with impulse motor and German battery not working.

[@wim4245]

This is a Bosch battery, not an Impulse. Most (qualitative) batteries needs communication to activate.

[@marcricci7298]

@@wim4245 thankyou...so can I assume the controller is not signaling the BMS to activate the battery full voltage.

[@kristof1232]

Hi, I hope there will be more videos because you bring up interesting topics;) I have Bosch classic 400Wh batteries, I replaced the damaged button in the BMS under voltage and I made a short to B +. The battery is charging but the bike does not start. Do you have any idea what could be damaged?

[@wim4245]

Hard to say without knowing what exactly shorted. Could be a burned trace, or maybe you damaged the CAN-IC next to the button?

[@kristof1232]

@@wim4245 I sent the photo by email

[@AppledoreInstowFerry]

Can you help please. I am replacing the Schottky Diode as my 500w power pack is dead. There is no marking on the defective diode to show me which way around the replacement goes. I do not want to cause further damage by connection it the wrong way around. Are you able to indicate to me the positive and negative orientation for the new diode. Thank you

[@wim4245]

Cathode towards mosfets

[@cachorroloko2140]

Hii. Can you tell me how to connect bosch battery to another bike. Because it has the positive, the negative and 2 thinner wires that must be a key to activate the bms, if you join these 2 wires the battery becomes active?

[@belindarosewood4162]

WHat diode do you need to replace where to get it from?

[@wim4245]

SS16, from any electronic parts seller

[@tominterrupto]

Hi Wim, what is the best part to use to replace the voltage regulator. I have seen TPS57160-Q1 recommended but can only find one very expensive source for that.

[@tominterrupto]

TPS54160-Q is available and looks very similar...

[@wim4245]

@@tominterrupto If you have time, you can order them on Aliexpress. Probably counterfeit, but I’ve got good experience with these. www.aliexpress.com/item/1005001970720656.html

[@tominterrupto]

@@wim4245 Thanks so much!

[@juleol99]

could you theoretically replace the bms with a simpler replacement BMS with a mechanicall on/off button if willing to sacrifice on/off function feim handlebars?

[@wim4245]

Not possible, the drive unit will not engage

[@reneremerie3508]

Hoi Wim, bedankt voor deze video hoor. Wim ik ben een leek op dit gebied, maar zou je mijn BMS wel willen nakijken? Volgens mij heeft ie geen waterschade.

[@wim4245]

Stuur even een mailtje: wimverbakel at gmail.com

[@juleol99]

nice video. by the way is there such thing as a replacement BMS for these Bosch packs?

[@wim4245]

No

[@janstappers5246]

Hi, as an electronics enthusiast I'm trying to repair my bosch battery myself. The diode and button are ok, what are other common things that i can check that maybe are broken?

[@wim4245]

Difficult to say without diagnosing the BMS… 5V-regulator, CAN-IC, balancing-IC, MOSFET’s, MCU, corrosion, combination of problems…

[@janstappers5246]

@@wim4245 corrosion is not the issue (clean pcb). 5V is ok. CAN-IC I don't know yet. If there is something wrong with the balancing ic, then the bms can't be repaired I guess?

[@wim4245]

@@janstappers5246 All components can be replaced

[@mybattery18650]

good morning great video. where can i find the resistors? do you have a link thanks.

[@wim4245]

Which resistors?

[@mybattery18650]

@@wim4245 what you replaced

[@wim4245]

@@mybattery18650 It's a diode SS16

[@mybattery18650]

@@wim4245 the little black part that you replaced?

[@wim4245]

@@mybattery18650 yes

[@Daniel-x8x8w]

Hey man i have a bosch powerpack 400 and i completely drained it now it will only have 1 solid green bar and will not charge at all.

[@wim4245]

Could be anything from faulty cells to faulty BMS

[@woutteriet9421]

Dag Wim, vraagje. Ik heb een Powerpack 400 en kan de batterypack gewoon laden (ledjes doen prima hun werk). Gebruik ik de fiets dan gaat het display na een kort stukje ondersteund fietsen geheel uit. Zet ik het weer aan dan herhaalt zich het proces. Dit ligt aan de batterij. Gebruik ik een andere batterij op de fiets dan doet het probleem zich niet voor. Wat kan er met die batterij zijn?

[@wim4245]

Kan ik niet vanop afstand zeggen. Onbalans, defecte celgroep, defect component of vochtschade...

[@paoloaldi1030]

Hi @wim I followed your steps and now the Powerpack turns on and charges. However when I connect it to the bike (2019 ecube reaction hybrid pro 400, purion display, Bosch 250W 75Nm mid-drive) the display turns on, shows the battery status and the riding mode but shuts off in 2 to 10 seconds. If I try to turn it on while paddling I can feel the motor engaging correctly but the bike shuts off regardless after 2 to 10 seconds. I tried reset the battery and tighten/adjust the battery holder with no luck. Any thoughts? Thanks for helping!

[@wim4245]

Difficult to say without diagnosing the battery. De battery turning off, is probably because the BMS senses something is wrong. Could be imbalance, faulty current reading, temperature out of range… These could be caused by a, actual fault, a faulty connection, but also caused by a faulty component. First step would be connecting to diagnostics computer.

[@timcope8445]

Hi wim Are you able to repair the latest Bosch 500 packs as I thought there was a chip on the new board that "dies" if there is a fault and stops the battery for being used at all I have two of these packs with no life if you can fix them please? I can remove the board and post it if the board will still work when power has been removed from it?

[@mathw2703]

Ik heb een 400 Powerpack 2018 voor in het frame en daar zitten op het BMS 2 aansluitingen op die naar de motor (+controller) gaan, kan ik het BMS van de accu in de film voor deze accu gebruiken ik zie nergens die 2 connectoren ..?

[@wim4245]

Hardware is identiek, ook de connectoren

[@mathw2703]

@@wim4245 Ik heb mij een gebruikte 400 Accu zoals in filmpje gekocht op Marktplaats en daarvan het BMS gebruikt in mijn eigen accu en het werkt! Is wel een enigzins geklooi om de accu case weer goed dicht te krijgen zonder iets te beschadigen. Dank voor de antwoorden en raad!

[@OlafAa]

Hi Wim, Ik heb de schottky diode verwisseld en als ik de bms aansluit op 30V dan lichten alleen de eerste 3 lampjes op, betekent dit dat hij wel werkt of is deze dan ook dood

[@wim4245]

Aantal LEDs zegt niets over de werking, dat is gewoon de laatst opgeslagen SOC.

[@rduwe9466]

heb je ook ervaring in de Bosch powertube bms??

[@wim4245]

Ja

[@rduwe9466]

@@wim4245 kan de powertube bms hersteld worden of gereset.

[@wim4245]

@@rduwe9466 Ligt er aan wat het probleem is

[@im823]

Hi, great video. I recently had my bike diagnose with Bosch dealer and they shorted out my Bosch Powerpack 500. They claim it was my battery failing but it was working fine before. Could you help repair. thx

[@wim4245]

Hi, where are you from? Shipping will probably be a problem

[@erwinh5648]

Je hebt in de omschrijving van de video staan dat het om een defecte 5 volt diode gaat. De ss16 diode is toch 60 volt? Of zijn die er ook van 5 volt?

[@wim4245]

Moet minimaal 40 V zijn (SS14). SS16 is beter. Spanningsregelaar is 5 V.

[@youbellshown1936]

Hello wim , could you informe me what code of this BMS of that battery bosh 36v

[@wim4245]

What do you mean?

[@mybattery18650]

hello, if I only have the first 2 diodes that light up, when I test. could it be the leds? thank you for your reply.

[@wim4245]

That's just the last remembered state of charge. Charge it till all LED's are on.

[@mybattery18650]

@@wim4245 thank you

[@raadalmasdari1076]

Hallo, where can buy this diode?

[@wim4245]

It's a regular SS16 Schottky diode

[@MrThebigcheese123]

Hi there. Great video. I have the same issue. Which diode did you use, I have only 250v in stock but i feel this is too big. Thanks

[@wim4245]

SS16 is best

[@MrThebigcheese123]

@@wim4245 Thank you! DC Repair Group.

[@olivierj.2435]

Hey ! I read A6 42 L? on my faulty diode SS16 will be good ? Aliexpress will be my friend or not ? Thanks

[@wim4245]

Yes, SS16 will work fine. You can order from aliexpress or any other store.

[@olivierj.2435]

@@wim4245 Thanks I did it

[@SL-pn1wg]

Hi Wim, great video, i have Bosch 400wh battery that has just stopped charging, bike is a daily commute and has been fine up until now, i have removed the back cover and all seems ok with no signs of any water damaged, i think it must be the BMS board that’s faulty, can you send me a link on where to purchased 1 please, or do you do a fix service i can post to you, im based in London, many thanks in advance, stef

[@wim4245]

Hi, send me an email (see 'About' on this channel)

[@oliver-ce6zg]

Goedendag wim, welk model soldeer bout/station gebruik jij , of hovel watt heb ik nodig . (Ik heb namelijk wel moeite met het verwijderen van de dikkere kabels van de bms )

[@wim4245]

Weller WS80 in het filmpje

[@andreabarchiesi2168]

salve wim ho una powerpack 500 bosch che non so come ma per tentare di fare la modifica per extender si e' danneggiato il bms e ora non si accende niente neanche i led

[@jensangele3969]

which type of diode i must use ? do you have e part-number or title for diode or any link ?

[@wim4245]

Best to use SS16

[@jensangele3969]

@@wim4245 Super ! Many thanks for the quick reply. I ordered the replacement part. let's see if I can bring the BMS back to life. Greetings from Chemnitz too.

[@ctml59]

Hoi Wim. Wat is het onderdeel dat je hier vervangen hebt. Is het een specifieke diode en waar kun je die krijgen?

[@wim4245]

SS16 diode

[@67Pitschi]

Hallo, ich habe gebraucht einen Bosch Powertube 625 gekauft. Er zeigt voll an allerdings WIRD er weder geladen noch von meinem Rad erkannt. Mein Fahrradhändler hat ihn ausgelesen und meint er sei deaktiviert. Wie kann das passieren und kann das rückgängig gemacht werden? Gruß Dirk

[@wim4245]

These batteries can be deactivated with the dealer Bosch Diagnostics software. This is permanently cannot be undone.

[@flloriangerard]

Hello mine has all the cells at 4.2V, BMS board seems to work for charging and i get 42V from the 10S 18650 black and red wires. But nothing from the output of the BMS to the connector of the battery. Is there any DC DC converter to get 36V from the 10S voltage ? it got be the problem...? Seem like 2 big MOSFET at the output ?

[@wim4245]

The battery is 30-42 V, no DCDC conversion for the output. The mosfet's are for switching load or charger on/off. The battery needs the correct commands over the CAN-bus to switch the output on.

[@flloriangerard]

@@wim4245 oh ok then MOSFET should be dead... but thé motor can accept 42v ?!

[@wim4245]

​@@flloriangerard Why do you think the mosfet is dead? It's completely normal that you don't measure any output. If you don't measure any output in the bike, there is probably something else wrong (the MCU won't switch the mosfets if there is anything else wrong). The battery is 10S, so of course the motor is 42 V.

[@loisiglesias6525]

LEDs 2 and 4 flash. What can be the error?

[@wim4245]

Could be multiple errors. Mostly about wrong current measurement. Must be reset with diagnostic software after repair.

[@retepkathy1]

IK heb een bosch batterijpack en zou zo'n diode willen , zou u deze kunnen opzenden , of een herstelling kan u deze doen als ik ze opzend, cellen lijken me ok hebben +-4 volt en iets hoger , wat kost zo'n herstelling bij u ?

[@wim4245]

Stuur even een mailtje: [e-mail]

[@LePermutant]

Hello Wim, I have a Bosch powerpack 500 which don't deliver anymore electricity to my e bike. I sent it to a battery repair company that said it was the BMS and they can't do anything. However the green leds of the BMS light up . strange isn't it ? Do you think you can do something ? regards. Eric.

[@wim4245]

BMS can definitely be faulty even with working LEDs. If the cells are indeed fine, the BMS can probably be repaired.

[@LePermutant]

@@wim4245 Thank you for your answer. So could I send it to you to repair it ?

[@wim4245]

@@LePermutant Send me an email: [e-mail]

[@dieu007md4]

Merci pour la vidéo ! Bonjour, ou acheter une carte bms pour PoWerpack 400 ? Merci

[@wim4245]

Send me an email (see "About" on my channel)

[@priyankagarwal1947]

@Wim can you tell me what is the communication interface offered between the motor controller and BMS? Is it CAN, RS485 or RS232.

[@wim4245]

CAN 500 kbit/s for activeline

[@TheKratospectre]

hello, where can we buy the little diode? thank you

[@wim4245]

You can use a SS16. Link is in other replies.

[@oliviercecillon8327]

Hi Win Thanks for those videos very instructive I have a power pack 400 2 first diode light when I press the button When I connect the charger I hear the click, the second diode start blinking for 10 to 20 second and then stop and the charge stop Pack is out of warranty for a while Before dismantling any idea where it could come from based on your experience? Thanks Olivier

[@wim4245]

Sounds like unbalaced cells. Do you get error 640 on your bike? Measure cell voltages first. If they are unbalaced, you can balance them but it probably won't help long. Only good solution in that case is to replace all cells.

[@oliviercecillon8327]

@@wim4245 thanks for your he quick answer, I opened up the pack an there are some which are as low as 3,5 v, I’ll try à charge of each pack to see If I can recover the nominal voltage but you’re right there must be cells ending up their lives…Can I replace them with some with bigger capacity ?, do you have a site for good cells at a decent price? Thanks

[@wim4245]

@@oliviercecillon8327 NKON.nl. Use Samsung 35E or LG MJ1. Both for 500 Wh battery.

[@oliviercecillon8327]

@@wim4245 ok thanks for the tip

[@oliviercecillon8327]

Hello Wim I did a refresh of the 10 individual 4p packs, they are all at around 9500 ma capacity and I reach 4.15 to 4.2 v full charge, I therefore conclude that batterie can still serve a bit. However once all reconnected I have only 2 led lighting when I do a test pressing the button…any idea how how could troubleshoot further ?

[@kevinkurianisaac7939]

very helpful

[@mathw2703]

welke diodes zijn te gebruiken?

[@wim4245]

SS16

[@pdyakiew]

Hi Wim i have been told my battery has water damage. Is it possible to repair this ? Could you fix it ?

[@BeginnerMoto]

Hello Wim, I tried testing the diodes on my Powerpack 500 BMS and shorted it out with my probes. I still had the thing connected to the cells because of all the stuff I read online about the BMS dying when losing power but the more I learn I think that's just a myth. I tested the cells afterwards and found that they seems to be fine. My question is, can I get a BMS from a Powerpack 400 and use my cells from my Powerpack 500 to make a new Powerpack 500?

[@wim4245]

Yes you can use a 400 Wh BMS with 500 Wh cells. Displayed range will not be correct, but you can use full capacity.

[@BeginnerMoto]

@@wim4245 Awesome, thank you for the quick response!

[@Ravenby101]

Hi mate Do you live in UK if yes I want to send my battery for repair

[@wim4245]

That's going to be difficult. I'm located in Belgium. Shipping the complete battery isn't possible.

[@Ravenby101]

@@wim4245 what if I ship the battery to you ?

[@wim4245]

@@Ravenby101 Your not allowed to ship a used lithium ion battery. Customs will confiscate it.

[@martinvancranenbroek9495]

Ik heb ook een bms kapot denk ik.. waar zit je ergens Wim? Mvg martin

[@wim4245]

In Lommel

[@martinvancranenbroek9495]

@@wim4245 oh en kan ik eens langs komen met de batterij? Ik zit in Hamont…

[@wim4245]

@@martinvancranenbroek9495 stuur even een mailtje: [e-mail]

[@woody7134]

Hi. Excuse me, can you help me.I have Error 640 on my Intuvia. Speedometer showing 0 for 2 seconds and shut down with error 640. I had seen no water damage. 4 pcs 18650 have 3.2V and other 4.1V. Are they broken? Charging showing all 5 leds green.

[@wim4245]

They have to be perfectly balanced. Only good solution is to replace all cells with new cells, otherwise they will be out of balance again soon.

[@mathw2703]

Als ik een stevige berg of heuvel omhoog fiets dan valt vaker de ondersteuning weg, is dit te wijten aan een mindere defecte cel en dat dan door spanningsval het BMS de accu blokkeert (Powepack 400)? Kan het ook aan het BMS zelf liggen ik heb er net een ander ingezet van een andere accu? dank

[@wim4245]

Dat zou inderdaad kunnen

[@kryszczuk]

Hi Wim, great video!. I have a powerpack 300 , and indeed the Schottky diode is fried (tested with the multimeter). However, I read that the battery should be completely dead if that happens, but mine still lights up one LED when the putton is pressed. Are you familiar with the symptom? Will a diode replacement fix the problem? Also, I read online that disconnecting the bms from voltage will brick it, but that doesn't seem to be the case for you in the vid. So that's a myth I suppose and I can safely remove it from the battery? thank!

[@wim4245]

If the LEDs light, the diode is definitely working. Your measurement is probably messed up because your BMS wasn't disconnected. Disconnecting is no problem.

[@kryszczuk]

@@wim4245 thanks very much, that helps a lot. WHere would you suggest that I look for the problem? The cells are all ~3.69V. THe battery doesn't charge (only one LED is on all the time when plugged in), pressing the battery button for 10-20 sec does nothing, and the bike disconnects the battery after 10 seconds of operation... Any suggestions most appreciated...

[@wim4245]

@@kryszczuk Sorry, can't help you without actually diagnosing the BMS. There are a lot of thing that could cause this.

[@josephsantangelo5616]

@@wim4245 are you accepting batteries to repair

[@wim4245]

@@josephsantangelo5616 yes, I run a repair shop. See my mail address on the "About" page in this channel

[@pascalwauters9986]

Goedemorgen Wim ik heb een thompson voltage met bosch power pack 400 Classic de fiets heeft nooit problemen gehad en met in de storm te rijden was het in een keer gedaan display uit en mijn lichten gingen zacht dood

[@wim4245]

Dag Pascal, Mogelijk is dat te herstellen, maar hangt er vanaf hoeveel waterschade er is. Neem even via mail contact als je wilt afspreken.

[@davidr1997]

Hallo Wim, ik zou ook graag mijn BMS gerepareerd hebben als dat mogelijk is. Hoe kom ik in contact met u? Mvg david

[@wim4245]

Stuur even een mailtje: [e-mail]

[@diesel-technology5507]

I have a really strange one with mine, battery pack lights up one light when charger plugged in, but doesn't charge, 5v seems to be working ok, and when I connect the intuvia it doesn't recognise the battery or the charger..... however if I continuity check the + of changer with + of battery it starts to charge and the intuvia starts flashing and shuts off, then if I disconnect the battery and plug it back in intuvia says charging, then shuts off. Also the battery single led doesn't change to two or 3 when the voltage goes up towards 40.5v. It did have water damage and the capacitor between the two MOSFETs next to the + terminals literally just fell off when I was checking for shorts. I'm thinking there's a problem with the actual processor on the board but I'm no expert. I really would like to fix the board purely as a challenge but I'm now lost

[@wim4245]

That's not a capacitor between the FET's, but a temperature sensor. The BMS won't work without it. There’s a high chance the water caused more damage (corroded via’s, traces, components…).

[@diesel-technology5507]

@@wim4245 I think I will buy a replacement BMS and throw this one away then. Nothing looks corroded but I will imagine that the water short circuit could have damaged some things that I can not see and I don't want to test every component on the board. Do you sell the BMS units?

[@wim4245]

@@diesel-technology5507 Send me an email: [e-mail]

[@Un0wnn]

hoeveel volt zet je op de bms toen je hem aan het testen was ?

[@wim4245]

Op de spoel na de 5V-regelaar: 4 - 5 V Ingang BMS: 30 - 42 V

[@mlierfiedo3069]

Hello Wim, I tried to repair a dead battery (bosch powerpack 400), it was discharged and stayed in this state for more than six months, I replaced all 40 cells, however, during the replacement process, I completely disconnected the BMS board from cells, now when I assembled the battery, the indicator on the BMS shows a full charge, but when I connect the battery to the ebike it starts up and turns off immediately. Are there ways to factory reset the BMS board on the battery so that it sees the new cells capacity?

[@wim4245]

The BMS doesn't have to be reset. Probably the BMS died and discharged the battery. Can you see any signs of corrosion on the PCB?

[@TheKratospectre]

Bonjour, où on peut acheter la diode

[@C1972G]

Hallo Wim. Duidelijke en interessante video. 👍🏻 Weet je wellicht ook of er iemand is die een Bms kan repareren? Liefst in Nederland?

[@wim4245]

Stuur me een mailtje. Ik heb een herstelbedrijf en heb al duizenden Bosch BMS'en hersteld.

[@DarrellEaton]

Hi, great video, do you do this type of repair for anyone?

[@wim4245]

Thanks. Yes, I run a small repair business.

[@DarrellEaton]

@@wim4245 have you got some details of how I could contact you and or send a BMS for you to have a look at.

[@wim4245]

@@DarrellEaton You can find my mail address in my channel on the tab "About"

[@svastarijaopa5580]

Hi. could you help. I have Powerpack 500 that drained batteries. I did fix BMS(few minutes) had to replace: Schottky Diode, CAN Transceiver TLE6251-2G, TPS57160 (mine was burned), and LORA. After replacing parts this battery pack started working agin. Then I made mistake to disconnect negative B- wire first. Since then the BMS does not work. When I do 3.7 volt injection only LED #2 and #4 lights up. Any ideas, how can I fix this. THanks

[@wim4245]

I'm afraid you can't fix this without replacing the CPU. 2 + 4 is an error stored in de the CPU. You cannot erase this (even not with the Bosch dealer software). I don't think it was caused by disconnecting B- first. These boards doesn't seem to be sensitive for wrong disconnect procedure. I would think there was an another problem, but it's strange that it worked for a moment after repair. Edit: LED 2 + 4 can be repairable (depending on what the cause is). After repair, the error has to be cleared with Bosch diagnostic tool

[@sezeraktas3980]

@@wim4245 Had een video gezien waar 2de en 4de led lamp betekende dat de hitte sensor defect is

[@wim4245]

@@sezeraktas3980 Dat is normaal 1 + 3 + 5

[@sezeraktas3980]

@@wim4245 hoi wim kan ik contact met jouw opnemen? Ben namelijk zelf ook bezig met het reparen van accu's

[@wim4245]

Mijn mailadres staat onder "About" op mijn kanaal.

[@stefanopisegna3236]

Hi Wim, I have a Bosh Powerpack battery that fall down and it's no more working. I think it is the bms that orobably got damaged. Can I send to you the battery or just the bms if you want. Please send me a contact. Thanks ! Stefano

[@wim4245]

Send me an email: [e-mail]

[@samanthascott875]

Wish that was my battery being fixed as mine only gives me walk mode

[@cashbloodbullies2632]

Hi how can I contact you, thanks

[@wim4245]

[e-mail]