Common eBike problems and solutions

Hey everyone!

I'm thinking about getting a folding eBike for my commute and some weekend adventures, probably something like a Lectric XP or a RadExpand. I'm curious what common issues you all have run into with your folding eBikes, especially after a few hundred miles or on mixed terrain? Things like hinge creaks, battery connection woes, or maybe even tire punctures from city riding?

And more importantly, what clever solutions have you found for these problems? I'd love to hear your experiences and tips before I dive in!