A54, 1 year old. Sometimes I find battery at 30% in the morning. I had assumed it was my fault. This morning, found it at 42% having been on fast charge for 6 hours, & it said 20 hours + to full charge! Restarted phone & set to slow charge & it full charge, to 85%, in 1½ hours. I had set it to fast charge about 2 days ago as it was at 30% & I needed to go, normally on slow charge. Why these problems?