Dead batterie on my 2017

[LongRanger_imp]

I don’t know about climate change, but due to the lousy weather here, I’m only able to ride (reliably) during a 3-4 month period in the summer, and because I have several bikes, not every bike gets ridden every week. That said, I typically get 7-8 years from no-name, $50 mail order batteries. The bikes are kept on Battery Tenders when not ridden, hence my surprise that you’re only getting about half as much life from yours as I do from mine (especially considering how frequently you ride).