Get the most out of your Petzl Tikka R or Tikka RXP headlamp with the ACCU Battery, an 1800 mAh Li ion rechargeable battery designed to guarantee high performance, even in low temperatures. Micro USB port allows for simple universal charging 4.5 hour recharge time Estimated battery life of 300 recharge cycles After 300 cycles, battery capacity is approx. 30% lower than initial capacity. Battery chargedischarge indicator lets you know how much power the battery has. Resists extreme temperatures 4deg to 122deg F 20deg to 50degC. Weighs 1.94 oz. 55 g. Due to federal shipping restrictions regarding products containing lithium batteries, this product cannot be shipped to Canada, Hawaii, Alaska, Catalina Island, Puerto Rico, APO, FPO, or international addresses. Thanks for your understanding.