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So im probably just going to buy a new host but can i trust that website you listed and is their anything else i need other than the module, host and batteries?

The host does have a button

So the positive side of the battery is facing toward the bottom of the shell where the button is the negative (flat side) is facing towards the module

Can someone give me a link to a host that would work with this module im not looking to spend more than $15

So the module has good contact with the battery cause i can feel the tension when screwing on the cap but here is pictures of the setup oh wait i cant upload pictures from my phone as their not the rigjt format

So basically i just slid the module into the hole on the shell so the spring from the module was touching the battery and then i put the cap on

INDUSTRIAL/LAB 3VDC 532nm Green Beam Laser Lazer 50mW Diode Module

Industrial Lab 3VDC 532nm Green Beam Laser Lazer 50mW Diode Module | eBay

So i just bought a 50mw laser diode module and i also have an empty laser pointer shell (it has a battery) the laser module fits perfectly in the shell but for some reason the laser pointer wont turn on. The laser module is listed in the links section. But im using a BTL 18650 6000 mAh 3.7V...