I have 2 in daily rotation for 4 - 6 months without any issues.  I have another in the stash and plan to order a few more later this year.  The only bad I have read on them is the wiring is side is on the thin side.  I did have one DOA in 2 battery mode on arrival that worked fine in 3 battery mode but the vendor replaced it.
	
		
			
		
		
	
			
			 
				
		 
 
		 
 
		 
 
		 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		