I want to say I am very new to lasers, and I just joined the forum (which helped me a lot when looking for a place to buy), but I just purchased the Ti B green 532nm from jetlasers, but I did not purchase the batteries from them. But, when it gives you the choice to select batteries there is 16340, 16650, then in the more info it says 1 x 17650, so which battery do I actually need to purchase for this particular laser? Sorry for the noob question, Thanks a lot!