I would walk away.
Brose in the USA is basically non existent. There is one shop in Colorado that works on Brose. I had my motor overhauled last year with all new bearings and a belt. I have since put over 7000 miles on it. But……….when I made the call to get it fixed , the first question they asked is …..” is the engine throwing any error codes?” If it was throwing errors, then the motor would have to be sent back to Brose in Germany. My answer was no , and so I sent it away to be overhauled. Unfortunately you don’t have that option because you can’t turn it on to see if it’s throwing any errors.
There is a company that showed a drop in replacement motor for Brose at a recent European bike show. No specs were given if a generic battery replacement coupled with the drop in motor would work. But if they allow that, it would be a life saver for anyone in your situation.…….me included. The company’s name is oli-ebike.com
Brose in the USA is basically non existent. There is one shop in Colorado that works on Brose. I had my motor overhauled last year with all new bearings and a belt. I have since put over 7000 miles on it. But……….when I made the call to get it fixed , the first question they asked is …..” is the engine throwing any error codes?” If it was throwing errors, then the motor would have to be sent back to Brose in Germany. My answer was no , and so I sent it away to be overhauled. Unfortunately you don’t have that option because you can’t turn it on to see if it’s throwing any errors.
There is a company that showed a drop in replacement motor for Brose at a recent European bike show. No specs were given if a generic battery replacement coupled with the drop in motor would work. But if they allow that, it would be a life saver for anyone in your situation.…….me included. The company’s name is oli-ebike.com