Mystery draw

[pwfarnell]

Shunt wired up wrong with the MPPT negative is connected direct to the battery rather than the load side of the shunt and is bypassing the shunt and not being measured. The DC loads tile is a calc so if the shunt is not measuring solar then the DC loads is also wrong. See links below.

Shunt / battery monitor not reading the correct SOC/ Amps, missing solar, decreasing daily or other misreading problems

This topic covers the SOC / Amps reported by BMV battery monitors, SmartShunts, Lynx BMSs and Lynx Shunts and will just be called shunt below. It is also assumed that the shunt is monitoring the domestic / house / cabin battery bank and not engine start / bow thruster / winch / caravan mover battery banks. The problems may be one or more of the following The SOC decreases daily despite the solar charger or other charger(s) working. The SOC increasing when discharging and falling when charging…

The DC System Power on a Venus device is jumping, erratic or does not match other loads

This topic covers the reported power in the DC system tile as shown on a Venus device (such as CCGX, Cerbo, Ekrano or Raspberry Pi etc.) or on VRM dashboard. The symptoms are typically that the DC power does not match with a calculation using the power shown and the battery, solar and ac tiles and/or that the DC System Power is erratic or jumping about. [DC system tile] To see the DC System tile, it needs “Has DC System” enabled in the System Setup Menu of the Venus device. [Has DC System] I…