Common eBike problems and solutions

Hey everyone!

Just got back from a killer 30-mile ride on some gnarly singletrack with my full-suspension eMTB, and it got me thinking. While e-bikes are awesome for tackling those climbs, what are some of the most common issues you guys have run into with your mountain e-bikes, especially when pushing them hard on technical terrain? I'm curious about everything from motor hiccups to battery degradation or even suspension woes. What solutions have you found work best, and are there any preventative measures you swear by? Let's share some wisdom!