Re: Lead, follow, or get the hell out of the way.
"If you're thinking of repairs, please turn your attention to the battery pack. Never take your eyes off the battery pack. Battery pack. It's a 'Lifed' item. Clock is ticking."
Yes - it has a life - so do all the components in an internal combustion engine.
The battery was originally quoted as a 10 year predicted life. Since they have had a few being driven around that has now been revised Upwards as a result of the telemetry data. It's now 12 years.
Oh and that's when they have 80% charge capacity, so they are then useful in all sorts of other applications - probably static, and then they can be recycled into new batteries.
My car has just died, it was 11 years old - The engine is dodgy, the gearbox is a bit wonky, the brake lines are corroded - it's had various mechanical failures....
But a 10-12 year battery life doesn't seem so limited any more.