I have 2 powerwalls hooked up to solar panels. I just had the panels removed for a roof tear off. Since my solar is no longer active the powerwalls don't charge from the grid. I am losing about 2% per day of my stored charge, Is there a way to force the powerwalls to charge from the grid? I am in northern CA and will be having a Tesla solar roof installed but that might be a while. I will call tesla tomorrow but thought someone here might have an answer.