Bosch power pack BMS raplacement? Can it be done?

Batteries, Chargers, and Battery Management Systems.
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SwampDonkey   100 W

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Bosch power pack BMS raplacement? Can it be done?

Post by SwampDonkey » Jan 24 2022 7:47pm

I have an old Bosch power pack. Id like to gut it and replace the cells and BMS.

Its from a Haibike. Will the pack work like normal with a common 10S ebay BMS? I have a few laying around.

Thanks!

Edit: I mean will the bike run as normal with a battery with an aftermarket BMS?

calab   100 kW

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Re: Bosch power pack BMS raplacement? Can it be done?

Post by calab » Jan 24 2022 8:24pm

Probably not work as there most likely is a communication protocol as its a consumer product that they want to limit their liability which is the biggest reasons why they do proprietary systems for consumer safety and liability.
SwampDonkey wrote:
Jan 24 2022 7:47pm
I have an old Bosch power pack. Id like to gut it and replace the cells and BMS.

Its from a Haibike. Will the pack work like normal with a common 10S ebay BMS? I have a few laying around.

Thanks!

Edit: I mean will the bike run as normal with a battery with an aftermarket BMS?

SwampDonkey   100 W

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Posts: 227
Joined: Mar 27 2018 1:35pm

Re: Bosch power pack BMS raplacement? Can it be done?

Post by SwampDonkey » Jan 24 2022 8:49pm

calab wrote:
Jan 24 2022 8:24pm
Probably not work as there most likely is a communication protocol as its a consumer product that they want to limit their liability which is the biggest reasons why they do proprietary systems for consumer safety and liability.
SwampDonkey wrote:
Jan 24 2022 7:47pm
I have an old Bosch power pack. Id like to gut it and replace the cells and BMS.

Its from a Haibike. Will the pack work like normal with a common 10S ebay BMS? I have a few laying around.

Thanks!

Edit: I mean will the bike run as normal with a battery with an aftermarket BMS?
So the bike is dead without an identical battery?

gobi   100 W

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Re: Bosch power pack BMS raplacement? Can it be done?

Post by gobi » Jan 24 2022 9:07pm

Post a pic of the output of the battery and the connection on the bike side,

Most scooter batteries have tx, rx (not sure I got the acronyms right, canbus????) on the battery port.

calab   100 kW

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Re: Bosch power pack BMS raplacement? Can it be done?

Post by calab » Jan 24 2022 9:15pm

I would say that since bosch is a big company with a need to protect its reputation you are most likely shitout of luck. This is one of the reasons why some people stay well well away from those types of companies and build their own ebikes, escooters, emotorbikes.
SwampDonkey wrote:
Jan 24 2022 8:49pm
So the bike is dead without an identical battery?

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Tomblarom   10 W

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Re: Bosch power pack BMS raplacement? Can it be done?

Post by Tomblarom » Jan 25 2022 7:24am

Do some research in German. Use Google Chrome for live translation. There is a lot regarding this topic:
- https://ebike-workshop.com/2020/08/14/bosch-bms/
- https://www.youtube.com/watch?v=MYDWzqU7RPo

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Tomblarom   10 W

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Re: Bosch power pack BMS raplacement? Can it be done?

Post by Tomblarom » Feb 02 2022 3:19am

I made this wiring diagram, to understand how to wire everything up.

Detach: B+ → Balancer [6p] → Balancer [7p] → B-
Attach: B- → B+ → Balancer [7p] → Balancer [6p]

Image


I was able to spot-weld my own mini-pack for testing purposes and successfully hooked it up, like described. Works! :lol:
Image

Oli.Hall   1 W

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Re: Bosch power pack BMS raplacement? Can it be done?

Post by Oli.Hall » Feb 02 2022 7:07am

I have repaired several faulty Bosch PowerPack 500 BMSs to working order. I am also interested in the Bosch BMS and the CAN protocol and I have spent many hours on google translate!

Tomblarom - Did you make your test rig to study the CAN protocol? Do you mind me asking what your intentions are?

Swampdonky - If you need a working Bosch Powerpack BMS for building your own pack, I could possibly see about selling you just the BMS if you are intertested in one?

thanks,
Oli.

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