Noob replacing BMS question C-

rudivb

100 mW
Joined
Sep 5, 2023
Messages
37
Location
France
Hi sorry this might be a dumb question, but I'm very careful dealing with a battery and components.
I bought a new (bluetooth) BMS, the BMS came with the wires pre-soldered to the board.
10AWG on the B- and 10AWG on C-, my old board has 2 wires to C-, 12AWG to the controller and 16AWG to the charger.

Can these 2 wires go directly in parallel to the 1 wire on my new BMS?

(Because I prefer not to solder directly to the BMS board)

IMG_20231209_124236.jpgSP17S003-14S Wiring Diagram.jpg
 

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The 10 AWG wire can easily handle the current.
You could either solder or crimp the 12 and 16 AWG wires to the BMS C- wire
 
Building on eee291, and to affirm your understanding, Rudivb, B- goes to battery negative. C- is discharge negative and charge negative.

I agree that those 10awg are sized well enough for the 50A peak, 25A continuous BMS they are attached to.
 
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