Hoping someone here might have seen this before. My two Lithium RV batteries were very consistent up until July 1st. Then something happened on that day and the voltage spiked to 48 then dropped and the graph becomes very unstable after that and never hits the full charge. Here's a graph shot that shows the change.
Since that time the batteries never show 100% charge. Did something get shorted out or could this be a BMS problem in the battery?