Thanks, I wasn't very clear... We bought it a couple years ago with about 132K miles on it, using a formula I found here I came up with just under 93K ICE miles. I'm pretty sure my family's use has been much more balanced than that, but it has done AZ to CA and back several times and been used ICE only due to no place to charge or charging not working for at least 6 months. My current inclination is to suck it up and do the repair, but I don't have a good feel for how common the 10 year old battery trouble is...