Same. I did have some retention early in the panel’s life (Investigation Discovery logo) - but that’s vanished and it’s been fine.

Ahem Sony ahem - referring to Minidisc which I thought was awesome but most Americans didn’t care.

I love the idea behind this. Overall I’ve been burned about 3 times in my home ownership time by committing to a brand like this. The brands seem to change batteries (voltage or connectors or both) on a 5 to 10 year cycle, meaning I either have to rebuild packs (fun with newer BMS etc) or deal with China sourced minimum lifetime packs. Even bigger things do this - but I did recently bought a Ryobi ride on mower that originally had lead acid that I covered myself to a single 48v lifepo4. Their newer ride ons have large 80v “packs” that I’m sure cost an arm and a leg for a proper “official” pack.