I am new to solar and need some help. I have a simple solar set up two 300w panels, victron MPPT 7/15, victron phoenix 24v 250 inverter and two 140ah AGM batteries in series. Attached to the MPPT load I have a USB charger to power a mobile phone. I also have a blue tooth dongle attached to the inverter to link to the phone / app.
I have a breaker in between the panels and the MPPT and fuses between the MPPT and batteries and between batteries and inverter - all on the live wire.
When everything is off - no load on either the USB or inverter (inverter is switched off) the Victron app is showing consumption of 50Wh.
The system ahs been running for around 2 months. Initially consumption was no more than 40wh but in last week or so it has been over 100wh (but with load - laptop / two monitors c100w - 140w).
Questions I have are:
1. Is this normal / typical?
2. If not normal what could be causing it? Problem with MPPT / batteries / connections / panels / fuses?
Any help / advice greatly appreciated.