This topic reminds me of vaccine debate
A. Pro vaccine B. Other
I use them and they are amazing.
Nay sayers be nay sayers.
I had a tender connected to my trolling motor battery during storage for season. And the spare battery fully charged but not connected. Took boat out maybe 2 years later. Guess what battery died within minutes.
The battery tender debate isn’t gonna go away.
The older you are the less belief in accepting a tender works vs non-tender. There I said it.