FWIW, there are reasonably priced computer backup power units (UPS=Uninterruptable Power Supply) that not only can provide hours of power during an outage, but also protect sensitive bator electronics from spikes and/or brown-outs. APC is, IMO, the best vendor for such products.
	
		
			
		
		
	
				
			 
	 
 
		 
 
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
	 
 
		 
 
		 
	 
 
		 
			
		
		
		
	
	
			
		 
	 
 
		 
 
		 
 
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