The L91BP-4 is an Energizer AA lithium battery designed for high-performance applications requiring extended runtime and reliable power delivery. It features a Lithium/Iron Disulfide (Li/FeS2) chemical system with a nominal voltage of 1.5 Volts and supports continuous discharge rates up to 2.0 Amps, with pulse discharge capability of 3.0 Amps (2 sec on / 8 sec off). The battery has a typical weight of 14.5 grams and internal resistance of 90 to 150 milliohms, with an exceptional shelf life of 15 years at 21°C while retaining 90% of rated capacity. Operating across a wide temperature range of -40°C to 60°C, the L91BP-4 is ideal for remote controls, portable lighting, digital cameras, and other high-drain consumer electronics where long-term reliability and superior cold-temperature performance are essential.