The Fenix ARB-L14-1050 is a high-performance 14500 Li-ion rechargeable battery designed to provide reliable, long-lasting power for your flashlights and electronic devices. With a 1050mAh capacity, this battery ensures extended runtimes compared to standard AA cells. It features advanced safety mechanisms, including a protective circuit in the anode to prevent short circuits, overcharging, and overheating. The durable steel shell construction protects against physical impact, while integrated pressure relief vents allow for safe gas expulsion, ensuring optimal performance and longevity for up to 500 charge cycles.