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Switch off Daly Smart BMS

Thomas55

New Member
Joined
Oct 25, 2020
Messages
21
Location
Germany
Hello

There are several ways to start a smart BMS from Daly.
Does anyone know a way to switch it off, without disconnecting the cell cables?

Thomas
 
My knowledge til today is, that it is not possible to switch the Daly BMS off.

Regards

Thomas
 
Is there a reason why you would to turn it off?
Note; when connected it is not really 'off'; it is just waiting to get activated.
 
I am using the bms in an enclosed box with a negative and positive terminal on the outside. I would feel more comfortable working around the battery if I could turn the bms "off" first so I wouldn't accidentally short the two sides together. Whenever I was done working around it, I would simply turn it back on.
 
Could you wire a breaker into the box itself to turn the battery off?
 
I use a 200 amp Busman circuit breaker (my load doesn't exceed 150 amps). Very useful as an off switch (but I also have a 200 amp class T fuse installed before the breaker).
 
Turn the battery off here
 

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I just tried this but the voltage does not drop down to zero but it does lower it significantly. Have you tested shutting it off on your side?
Some voltage is still there, but not significant current. A real off switch like you want needs a real mechanical switch.
 
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