- Joined
 - Feb 18, 2013
 
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 - 744
 
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Re: For sale: NEW 1W-2W 445nm 501B lasers from $110
If you have a DMM, you can check the voltage to see if their good. Full charge is between 4 - 4.2v.
Another issue could be if they have a button top, or not.
				
			If you have a DMM, you can check the voltage to see if their good. Full charge is between 4 - 4.2v.
Another issue could be if they have a button top, or not.
	
