B
#1 BHendy
I've noticed this happen a few times - the battery has plenty of charge and then totally discharges very rapidly before building back up to the preset level of charge.
It happened this morning (20/4), on 12/4 and 6/4, though on those two previous occasions it happened between 6 and 7:30am.
(The above is an image showing what happening this morning).
Is there a reason for this? It's quite frustrating to lose all that charge that had built up from solar and then replenish it from the grid.