I have been digging around and cannot find exactly what I am looking for so I thought I would ask here.  I am looking for a plain jane, no thrills ecig battery which outputs 3.7-3.8V, is around 900 mAh, and had a removable bottom so it can be charged with a USB cable but can still be vaped on at the same time.  I am not wanting one with adjustable voltage.  Maybe one with a puff counter.  Can anyone offer some recommendations on a model that can do this?  I am using KangerTech T3S clearomizers.
	
		
			
		
		
	
			
			
			
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