We have victron controls and battleborn batteries. We have an app that will show how much charge our batteries absorbed through solar for the day and it has a history as well. I believe it "reads" the solar charge controller. We absorbed 9.64kWh through solar today. almost 6 the last 2 days, 7kwh the day before, etc. I can see the last 30 days. We haven't been using as much power as we did 30 days ago so the batteries didn't get as low. obviously we can't absorb power if the batteries are topped off.
We also have an app for the inverter so we can see how much power is being inverted (to AC). This doesn't account for our DC lights (4W each). Currently drawing 205W. We have 3 fans running and so that means the fridge is probably running as well at this moment. It's a standard residential fridge. And the clock on the stove is on. Oh. And my phone is charging and probably my ear buds.
225Ah at 12v isn't very many watts. That's only 2700Whtotal. Plus, you likely should only drain your batteries to about 50% which means you have a "usable" 1350Wh before you start damaging the battery. We have battleborn lithium batteries and they come a BMS and can actually be run down to "zero" without damaging them. We have 1000Ah at 12v. Ok. That's a lie. We have it configured into a 24v system so we actually have 500Ah @24v. But it all equals 12,000 Wh.
We can read everything from the app - state of charge %, power being inverted, and how much solar we are taking in at any moment (plus the history totals for 30 days).