My battery replacement experience has been a nightmare. My 2014 MS P85 completely shut down. I got several BMS warning postmortem. Had the car serviced and the diagnosis was water in the HV batter fuse cover. Paid $2,149 to have HV battery removed from the car, test run to assess the heath of the HV battery, replace the fuse, ski rails and the low voltage battery. I was told the battery checked out good - no internal water leakage, good isolation checks and no secondary failures present. After driving the car for about two weeks, the battery’s range started dropped significantly (from 250 to 220 miles). I eventually made a service appointment for the reduced range. Two days later the car shut down again. Remote diagnostics pointed to a SOC imbalance and a battery replacement was needed. Was quoted $15k for a reman 85 kWh battery. I was told the new battery would have equivalent or better performance to the old battery and it would come with a 4yr/50k mile warranty. At this point, I am thinking fix the car and sell it for an upgrade. I asked if the battery warranty was transferable to a new owner. SC said, “they would need to have proof of service”. I asked, “Can’t Tesla connect the car VIN with the battery warranty.” SC said that would be a violation of privacy. In other words, they would not volunteer the information in hopes the new buyer would pay for the replacement. This speaks to the type of company we’re dealing with here. The replacement battery finally arrived, and I received another message from the SC saying they had to replace the ski rails and the low voltage battery at an additional cost of $500. These were the same parts I replaced two months ago. WTF? My reply – “NO”. SC said they had to replace the ski rails because the new battery doesn’t work with the old rails. I finally got the car back and the 100% range is only 244 miles and they gave me a reman 70 kWh battery, not the 85 kWh battery I was quoted. I am considering how far to take my displeasure. Question: Could the SC have damaged the battery when removed the first time? Is a 70 kWh battery equivalent or better than an 85 kWh battery? I know the 70 kWh battery was made in 2015 and it’s a year newer. Will that make up for 15 missing kWhs? What’s the longevity of a 70 kWh battery compared to 85 kWh? Any thoughts?