Gazelle Orange E-Bike, Bosch engine

Your bidding on the used Gazzelle Orange city e-bike equipped with Bosch engine. Large general maintenance( Chf300) performed last year but never used since then. Now the battery does not charge so I’m not sure what the problem is. Selling as it is before I go to the mechanic for the diagnostics; there, I’m advertising as defective.

Note that the battery holder lock was drilled (I’ve lost the original key).