to the motorcycle? NO
to the battery? 1-in-3 odds says YES.
as per Deltran techs a "tender" left attached and plugged in on a typically sized motorcycle battery will over a period of time.....get "confused" and show a false "fully charged" light. that period of time a crap-shoot and dependent on several variables. why does this happen? they don't know. how is it avoided? a simple plug-in timer. and how do i know this? a lengthy phone discussion with a Deltran tech about this very issue a few years ago.
let the arguing and "i never had a problem" comments commence.
Perfect Lunatic, great solution (besides just riding more:black_eyed. That should be a sticky for our poor Buellers who live where winter actually exists.
Guess I avoided this by being too cheap to buy additional tenders for multiple bikes. Rotate from bike to bike throughout the winter months is another option.
At least once a week, I plug and unplug three bikes with one Tender, one at a time. The longest any are left on is, if I fall asleep and unplug it the next morning.