Impressive Low Temperateure Resistance: Nitecore Summit 20000 | This 20000mAh high-capacity power bank stands out from competitors due to the -40°C/F temperature resistance. When temperatures drop below freezing, the Summit 20000's intelligent heating function activates, consuming ultra-low power to maintain optimal temperature and prevent power loss or inefficiency. The Summit 20000 also includes an insulated carrying bag and a reliable braided USB-C to C cable for seamless power transfer. If you're aiming for the top, make sure you bring along the Nitecore Summit 20000 power bank.