Common eBike problems and solutions

Hey everyone!

Been hitting the trails pretty hard lately on my full-suspension eMTB, mostly technical singletrack with some decent climbs. It got me thinking about common issues we face with these awesome machines. For those of you shredding on eMTBs, what are some of the most frequent problems you've encountered, and more importantly, what clever solutions or preventative maintenance tips have you found? I'm particularly curious about motor or battery quirks, or even drivetrain wear given the added power. Let's share some wisdom!