This is a new installation set up using default settings on smartsolar and multiplus II.
When first connected, Colour Control GX showed battery charge at 85% if memory serves. Over the course of three weeks, battery SOC indication has dropped to 30%. Apart from two very brief higher load scenarios (vacuum cleaner for 5 minutes and fridge freezer for 2 hours) the only load has been the base load of about 5-7W (according to colour control).
Colour control is recording voltage of 55+ Volts on the 48V AGM 230Ah battery bank (confirmed by meter on the battery terminals), so the smartsolar will not do an absorption charge for very long (1 hour on default) before reverting to float.
As I write this, it is 11:32am, bright sunshine, and VRM is recording a 9W AC load, batteries idle 11W, SOC 29%, 55.4V and current 0.2A, and PV charging at 50W.
What am I missing?