Key Features: Functions at -20degC(-4AdegF) 1920 mAh battery provides up to 16 minutes of flight time. Intelligent BMS that optimizes battery health and improves lifespan. Enhanced safety features, such as overcharge and over-discharge protection, self-discharge protection during storage, and short-circuit protection. Specs: Capacity: 1920mAh Standard Voltage: 7.38V Weight: 42g Charging Limit Voltage: 8.5V Charging Temperature: 5AdegC to 40AdegC Charging Speed: Use the Charging Hub and 65 Watt Power Adapter to fully charge one battery in 45 minutes, or two batteries in 60 minutes, 55 minutes to 100% (charging X1 PRO and PROMAX while inside) Recommended Charging Adapter: PD 65W adapter