Just got my AGT back after having the HV battery replaced (as noted above), and I was really pleased with the service. The Natick Service Manager, Danny, arranged for one of the techs to meet me in Concord NH (about 40 minutes from my house) to swap out an AGT (20" wheels) loaner. Since I was definitely over 24K miles already, they performed another 12K service and fixed the few other minor issues I had as well as finding and fixing some items I had never noticed. During a final test drive, they noticed a noise in the front and discovered one of the motor mounts was cracked, so they kept the car a couple extra days and replaced both motor mounts under warranty once the parts arrived. They gave me the option of having my car returned via a Concord exchange last night (Friday) or waiting till Monday, and I opted for the former since I was taking a road trip to VT today. It was so good to have Dorothy back. I do admit I prefer the 19" wheels on the NH roads. I'm getting used to the easy entry now; yes, the flashing Tidal icons are a bit annoying, so I seldom display that on the glass cockpit now.
As for the road trip, with the change in temps (20s at night, 50 during the day), I was interested to see how my trip went and compare any difference in efficiency with the new battery. I'm not sure that's doable, since I was in the northern part of the state, which is much more mountainous, but the temps were 49-54 for the day. I'll be adjusting my expected range for winter temps going forward.
I charged to 95% the night before, and it was close getting home. I was down to 9% with an estimated 47 miles remaining when I pulled into the garage. I've never seen the battery turn orange and have the "find charger, battery low" message on the glass cockpit. I don't want to see it again.
Stats:
95% charge
331.6 miles driven (47 estimated remaining) with 9% left on the battery
3.6 mi/kWh (my lifetime range has been 3.9-4.2 on average - 19" wheels)
93 kWh used
What was interesting, but annoying, was that when I was debating on rerouting to an EA charging station (I had stopped at the one in Lebanon, NH, but there were 3 cars waiting, so I thought I could make it home), when I put in my address, I could not get a true reading on what my estimated miles at destination actually would be... the car defaulted to an EA charging station in Manchester, a detour of more than 50 miles (to charger and then getting back on a route home). Once I hit Concord, I had a pretty good estimate of @30 miles to head home and a WAG of my battery percent and efficiency said I should make it. There was no way to route the car directly home on the NAV system and ignore/delete the charging stop detour.