I've found an original Europa charger for $40 (new), which I'll buy tomorrow. Yes, I noticed the correct "outside" charger in your photo after I posted my question. My pack is currently showing 28V & has not been used for a while, so I'm assuming it'll charge up nicely.
Down the road I'll have to figure a way to replace the 1/2" x 6" rectangle cells as this pack will work in all the older EV bikes, once the lower power contact is changed to a "computer plug". The pack too will work with any other electric bike, including my Tidalforce!
I'm not a fan of the noisy Heinzmann rear hub & intend to do an update on all the bikes as soon as I find the easiest plug & play hub, preferably a hub with the controller already inside the hub. The idea of using my spare Tidalforce hub with dash board & throttle along with the updated battery pack on my EVG 36V SX would make a fun bike too?
I too found a 2009 Europa w/100 miles on it for $400, & attempting to buy it for $300 range, just mainly to get the battery pack.
Would like to read the post where you upgraded your Europa's hub for "stealth" riding & how it turned out.