I don't know anything good or bad about that light seeing as it is a generic. It might be a real 365nm LED or it might not. I definitely would not use the battery and that type of charger are k own as fire starters so please use it only when you are there to keep an eye on it.
I would recommend a Convoy S2+ with UV. All high quality components and legit. Still budget lights but good quality regardless of price. Use k own quality cells from Samsung, panasonic, Sanyo, etc as well as a good quality charger. You will spend a little more than you did but you will have piece of mind and security and that is priceless.
