I know someone who is considering a BAP mod.  The only concern I could think of is that the case is screwed into 3D printed material, and I don't know its durability.  How well does that material hold up over time when unscrewing and screwing to change batteries?  Or does one need to use the internal charger?
	
		
			
		
		
	
			
			 
				
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		