Is this much current draw normal?

bayernfan

Took delivery of my 2024 Tab 400 Boondock yesterday.  Set up the Victron SmartShunt and SmartSolar per Battleborn's recommendations.

Plugged it into the 15A house power today, charged the battery to 14.4V.  Disconnected shore power and then disconnected the battery.  Synchronized 100% charge and 0 A current with the SmartShunt.  SmartSolar is disabled.

Everything in the camper is turned off.  Fridge is set on 0, it's hot inside of it.  Only light is the radio "off" display.

SmartShunt tells me the battery current is -6 A.  Weird.  I disconnect the battery again.  Smartshunt tells me the current is 0 A.

What is drawing 6 A from the battery?

Can share Victron app screenshots if it helps.

bayernfan

Already solved: pulling the e-brake pin caused it.  Happened upon this info in another post.

If your phantom power draw is about 5 to 6 amps, check your break-away e-brake pin.

Reinstalled the pin, current draw is now 0.4 A.

pthomas745

Yes, 6 amps was the clue! 

The other things that can cause larger drains would be: the inverter, if left on.  Not sure what the Multiplus draws, but the AIMS 1200 in the 400's draws 1.2 amps by itself.

The other thing that can cause issues with the battery monitors are the Battleborn battery heaters.  Each heater draws 1.6 amps.  And: the heaters have their own circuit out of the battery.....and the power used by the heaters does NOT run through the shunt.  So, owners with the 4 Battleborn configuration could possibly use more than 6 amps from the battery, but if you only look at the shunt number, and not notice the voltage drop, you could wind up with a depleted battery after a certain amount of time, and a shunt that is out of sync.