I'm at 9 years and 9000 miles. Batteries still going well, but substantial range has been lost. On the golf course, when new, I could easily play 36 holes on a hilly course with 2 bars charge remaining. This year I could make only 18 holes with 2 bars, sometimes 1 bar remaining - and when it got cold this fall (45-50 degrees) could barely go 16 holes on a hilly course, 18 holes on a flat course. Similar results on pavement; batteries seem to be down about half from the original performance. I'm about ready to do a battery upgrade.
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