tim... wrote:
surely a 7 year old car's going to have knackered battery

The Leaf has a battery capacity gauge - most of the ones on sale have 11 or
12 bars (out of 12), suggesting the battery is in reasonable condition. A
few at the cheaper end have 10 bars - probably worth paying a little more to
avoid those.

Newer cars have better battery management, so the batteries last longer.
But the early gen cars are still quite usable.

Theo