Viridian CR1/3N 3 Volt Lithium Battery (4-Pack) for Flashlights, Laser Sights, Tools Bundle with a Lumintrail Keychain Light

I use these batteries in the rifle and pistol I use for home defense, as well as target shooting. They last twice as long as cheaper batteries. Would you bet your life or your family's safety on a bargain brand? I ordered them and they were delivered the next day. Service doesn't get any better.

Since I just got and installed one of these in my Crimson Trace laser sight, I can’t give a opinion on longevity. The one issue I had right off is these batteries have a plastic cover that I had to peel off to fit in my Crimson Trace Laser sight. To tight a fit. Even with the covering removed I had to put some lubricant on for it to function. But I finally wa sable to make it work.

Batteries work great, but in certain cases you might need to take off the green branding label (which is not electrically conductive) from the battery so that you can make side connections work when the application uses the side for conductivity instead of the end of the battery.

I had to trim some of the protective wrap from the battery in order for one end to make contact with my laser.

i did not use my old original batteries hardly at all in my laser and they seemed to not have a very long life, but maybe its just the type of battery.

Quick and easy.. Told me what day and all.. Used for my gun laser.. Works great

I got these batteries for a pistol mounted laser. Initially after installation the laser seemed more powerful. Much better than battery the laser came with. Longevity is to be determined. The price was great compared to some.

I had to remove the plastic that is wrapped around each battery to get it to work in my TLR-4. This plastic wrap appears to be for advertisement only and serves no functional purpose as far as I could tell.