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16s JBD BMS connect to 8S Cells

shafkat

New Member
Joined
Jan 25, 2025
Messages
3
Location
Regina
As title says,

The BMS has 16 connectors for cell balancing but I am making a 24V 8S system.

No response from JBD. Looked at a previous forum which was a 22S but still not sure. Can't risk damaging the device before being confirm.
How do I connect the cell balancing wires?
 
As title says,

The BMS has 16 connectors for cell balancing but I am making a 24V 8S system.

No response from JBD. Looked at a previous forum which was a 22S but still not sure. Can't risk damaging the device before being confirm.
How do I connect the cell balancing wires?
What model?
Wiring diagrams can be found here.

Welcome to the forum.

Edit - forgot link.
 
Last edited:
My bad. Forgot the paste.
 
It depends on the model. If it's a straight 16s then you can only use it for 16s/48v batteries. If it's one of the 3-16s variable cell versions then you just need to figure out which of the leads all get bundled together. It can be kinda confusing but if you get it wrong you'll need a new BMS.
 
What model?
Wiring diagrams can be found here.

Welcome to the forum.

Edit - forgot link.
JBD-SP16S020

Since it has 16 cell balancing connectors but I have 8 cells, what do I do with the extra connectors?
 
I attached the two configurations I tried. The app using the bluetooth module gave me fluctuating values.

Image 2260 configuration, I asked ChatGPT.
Image 2261 configuration, I made it based off different cell series configuration available from the seller.

Please advise
 

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I attached the two configurations I tried. The app using the bluetooth module gave me fluctuating values.

Image 2260 configuration, I asked ChatGPT.
Image 2261 configuration, I made it based off different cell series configuration available from the seller.

Please advise
I wish I could find a diagram.
Free bump for you.
 

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