The Tenergy CR123A 3V non-rechargeable lithium battery is one the most popular, widely used and tested CR123A lithium batteries on the market. The high capacity Tenergy CR123A battery is designed to deliver long run times in every device that it powers whether it is an LED or incandescent flashlight, a camera, or a high tech gadget. Every Tenergy CR123A battery incorporates PTC protection and the PTC threshold is set at 5AMPS. The protected Tenergy CR123A batteries prevent excessive discharge that can damage lithium cells.