I sympathise with the owners especially since the bike rides so well; but if they expect a better design of the bosch battery clamp will solve the problem I fear they will be disappointed.I wouldnt recommend this bike to anyone. These problems are an inexcusable waste of new owners' resources.
An incredibly lame flaw that doesnt get enough attention is that the maximum chainring size is insufficient except for the weakest/slowest riders, and there is nothing we can do about it.
I have no doubt re-designed, or 3rd party versions of the clamp, will last longer, but having followed the thread on this problem, I am convinced the clamp is a victim rather than the cause of the problem.
A permanent solution needs to be one that properly secures the battery. I have 2 bikes that use the Bosch clamp, one of which has covered over 1000 miles. Neither bike has caused any problems or damage to the clamp. Both bikes use the full Bosch rail system to hold the battery however.