(The battery was in a bag on the handlebars, a temporary setup.)

Another problem for an e-Birdy is the added weight. It already comes with warnings to replace the swingarm, fork and handlepost every x thousand km or y years, I don't recall which. The added weight from motor + battery makes this worse. I see Pacific put both the motor and the battery inside the rear wheel. That solves the frame load issue, but makes the problem of increased unsuspended mass worse. It's "cable-less" which may mean it's illegal in EU, if it has no crank sensor. Though that doesn't affect Pacific much, and there's also the fact that this way it's fairly easy to electrify it, with a minimum of changes to the rest of the bike. A low hanging fruit for them.