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Good repair here. I did a similar repair several years ago on my Bosch e bike battery.

Great video, many thanks, I have bitten the bullet and bought a new battery pack, as I read that the BMS would lose its program when the voltage drops below a certain value. On opening the battery pack (400 type) I found the cells are not well at all….

Hey , nice job. Can you disconnect the BMS from the pack ? Will it not get in safety mode when there is no voltage on it ?

Nice job man. One question. If in the future new and better cells will become available, do you think the electronics of the battery will let us use the full capacity of the new battery? thx

what are the brand and type cells you use? i want to refirb it myself :)

Hi and thanks for the video very useful.

Hi, thanks a lot for your informative video. Two of my battery led flash! It’s not getting charge! Do you know what the problem is? What should I do? Thank you

Hi, Many thanks for the video. I have a Bosch battery as shown in the video & I am looking for some advice. According to the Bosch Diagnostic Software the Battery is deactivated with one light showing on the display & the Battery refusing to charge. My question is, if I replace the cell pack but use the original BMS, will the BMS still say it is deactivated or will it allow the Battery to work? Thanks in advance

Excellent as always.

Doesn’t this way mean all the current has to pass through those single pieces of nickel strip on the series connections. It doesn’t look thick enough to me. The Bosch design will have that central nickel strip as the main conductor with the cells feeding into it and I can see that central run is substantial. Those zig zags look like they need doubling up to me.

Hello, Thanks for your video. Do you think this type of battery pack could work in parrallele with the new bosch smart system batteries?

Thanks from the Netherlands! We have a lot of Bosch powered ebikes here. I started repairing ebike batteries as a hobby. Did not get an hand on a Bosch battery yet. But on the internet I read that these basterds are bricking itself when you cutoff the power. BMS is then unrepairable. What I see here is that you just migrate the bms from one pack to the other without issues.

good job, you make it seem so easy. i can solder and spotweld. maybe i could revise my battery to when she is done. also a bosch 500

I just repaired 2 of these batteries. 1 had the pink samsung cells 2800mah. and the other had chinesse GA´s in it. Both batteries had just 1 group of cells completely dead. That .2mm nickel can be welded nicely with the Malectrics spot welder kit. It can even make a hole thru if you use a diesel car battery....

Very informative, thanks. How did you source those plastic cell holders? Is it possible to buy those BMS'es from Bosh?

How did you overcome 'anti tamper' software fitted in these batteries ?

How is it possible that vanmoof cycles achieve 500wh with 30 cells instead of 40? Also one important step is missing: how do you get to

So where did you get the cell holders at the end? Thx

I have 2 used Bosch Powerpack 400 batteries. Is it possible to find out how many times they have been fully charged?

Have a question. I have a trek rail 5 that came stock with a bosch powertube 500. The 625 is also supposed to fit my bike. So I guess the batteries are the same size? Does the powertube 500 just have dead space we’re extra cells go or are the cells on the 625 larger capacity? If the 500 has dead space can extra cells be added the make the 500 into a 625. Thanks.

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