i'm getting an ego 1100 mah battery for vaping but i might not want to  use my computer to charge. i have a pretty old lg bd370 with (according  to pdf manual) has a usb 2.0 port.  can any usb port be used for  charging or do i have to use my computer which i really want to avoid.
		
		
	 
Like the rest says, any USB port which provide power will do,
I would like to add that most USB power adapters most will indicate the output amperage,
those that I've come across are:
500mA
1A
2.0A or 2.1A
I specifically bought 2.0/2.1A USB power adapter for my batteries so that it charges faster, 
on a 500mA adapter it just takes too much time, I only use it if I leave it overnight.