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gschultz avatar image

Smart Shunt 500A not showing battery state

My Smart Shunt in my 2 battery RV setup (wired as below) is not remembering the last charge setting when the bluetooth connection is broken. For example, batteries are 100% charged and the Android Victron App is connected to the shunt. In the RV, I run out both slides and the fridge is on (draws about 7Ah) overnight. In the morning I start the app to check the remaining battery capacity and it shows 100%. How the heck is that possible?!? I KNOW that I've drained some of the battery overnight. What am I doing wrong?


smart-shunt-500a-wiring.jpg

smart shunt
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Does your fridge work with the battery cut-off switch turned off?

1 Answer
Paul B avatar image
Paul B answered ·

Check the charged voltage setting

my guess is that the battery voltage is higher than this setting if it is then the SOC will stay at 100%

on a 12 volt system the voltage is usually set at 14 volts, theis is the tripper for the display to change to 100% when the battery is full

also charged detection time and tail current affect when its triggered as well


Also the battery ground is not connected correctly


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