I have a 2013 Energi Titanium and I replaced the HV battery myself with a battery I had shipped from a salvage yard half-way across the country that I found through a used salvage parts network online. (SE batteries are easy to find, larger Energi batteries not so much). It was surprisingly easy to do (except the lifting, they are quite heavy, can get it with 2 people though). Just keep track of how it comes apart and it goes right back together. Watch your defrost clips on the rear window when taking the panels off, knocked one off on the driver side and had to get the glue to put it back on. All in cost me like $1600 to replace it myself. Dealership wanted $9500 to do it. Now I get the full charge miles from a fresh charge again (18 miles for that generation), like new and it has been a year and a half since I installed it.
