Hi! I have a Powerwall 2 for about one week now. My powerwall 2 stops charging when at 86% charged. All of my solar panel generation goes to the grid leaving the powerwall at 86% and not 100% fully charged. I have to turn the grid breaker off for it to send the solar panels output to the battery instead of the grid, and then it begins to charge again until 100%. I turn the grid breaker on when the battery is at 100%. It does it every day at 86% sometimes 87% but not higher than 87%. Any ideas? Thanks!