question

gerry-mcg avatar image
gerry-mcg asked

How to connect SmartBatterySense to setup with BMV

Ive added a SmartMatterySense (SBS) to my system so I can monitor battery temperature when solar charging my lithium batteries.

The SBS instructions says to connect +ive and -ive wires to batter terminals, but how does this work when I have a BMV-700 with shunt attached to the -ive battery terminal?

common wisdom is all -ive lead should be connected to ground side of the shunt .

I appreciate the SBS only draws a very low current (20mA), however should I connect SBS -ive wire to the -ive battery terminal (as per instructions) or to the ground terminal of the BMV shunt (as per common wisdom) ?

Thanks

Gerry

BMV Battery MonitorSmart Battery Sense
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
kevgermany avatar image
kevgermany answered ·

Load needs to go to the ground side of the shunt. I don't see this as load. But it won't make much difference either way. The BMV isn't that accurate.

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Related Resources

Additional resources still need to be added for this topic

Smart Battery Sense Product Page

Smart Battery Sense Manual


Victron BMV battery monitors product page