Get the Titan Cerbus 7W 445nm Laser Pointer at https://www.jlasers.org/handhelds/titan-series/titan-445nm-7w
See the JLAasers page on Laser Safety at https://www.jlasers.org/safety
The battery I am using https://illumn.com/21700-molicel-4500mah-inr21700p45b-45a-high-discharge-flat-top.html
Other good Battery options https://illumn.com/21700-vapcell-4500mah-inr21700p45b-45a-high-discharge-flat-top.html and https://illumn.com/21700-samsung-inr21700-30t-3000mah-high-discharge-flat-top.html
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