I am seeing a problem in the monitoring charts, at 10.5v on the battery, the charge controller switches the load off. Which seems to happen at about 2200-2230. I need to get a good indication of how long it's been sunny the last few days, so I can see if this is a big problem with the positioning of the panel or simply that we haven't had much direct sunlight, or if I need to get the daytime consumption lower (actually I will probably do this anyway)

The meter monitor software I am writing is going to be essential here, I must be able to measure the current into the battery