3.7V 16340 Battery 2800mAh 16340 Rechargeable Battery 3.7 Volt Rechargeable 16340 Li-ion Batteries for Flashlight (4 Pack, Green)

They do the job. They last about as long as any you’d buy.

These are far better than the ones that came with my burning laser. Its performance is now much higher and longer lasting.

I am always nervous when I purchase rechargeable batteries. There are many things that can go wrong resulting in damage to people of products. When I popped these in the charger, they charged right up. I haven't used them often as I purchased them for items I use very sporadically so I can't attest to their longevity. That's the ONLY reason I'm giving this four stars instead of five. I don't like when people post a five star review for a product they haven't yet used it its entirety. Those aren’t helpful in my opinion.

Good value.

I only gave it one star because zero is not possible. These batteries were crap and did not last very long. And died basically just outside the return window

Great

Ok

Batteries function, and recharge well I have yet to evaluate their lifespan.