I have two recent powerwalls installed about two months ago. Since installed, they will not come out of standby mode and begin charging on their own. In order to get the powerwalls to charge, I have to put it into backup mode, to kickstart them to charge, then later put it into TOU mode in order to get them to work properly. Once charged they will discharge properly on the TOU schedule, but when it goes into standby at night, they will not wake-up the next day. They will continue to discharge several percent a day from the minimum level to Zero until I intervene as above. Has anyone else had this issue? Is there a fix?? it seems like a software problem, but Tesla does not seem to be able to identify the problem.