Which batteries for my laser?

Hey everyone.


Just got a Laserbtb PL 532 300mW today and I dont know which battery I should buy. I tried out my laser with this battery:

Nitecore 18650 3.7V 2A 9.6Wh 2600mAh Protected Li-ion Rechargeable Battery-Black+Yellow(NL186)

Amazon.com: Nitecore 18650 3.7V 2A 9.6Wh 2600mAh Protected Li-ion Rechargeable Battery-Black+Yellow(NL186): Sports & Outdoors


I usually use this battery for my headlamp. The laser was really weak, couldnt even light a match. So that probably means it's the wrong batteries right? Which ones are the best to maximize the power of my laser?



Also are those red glasses enough to protect my eyes or should I get those eagle pair glasses?



Thanks in advance and best regards! ;) any help would be greatly appreciated.