Belkin has put a serious laptop backup battery on sale in China: the UltraCharge Pro Laptop Power Bank 25K, a 25,000mAh model with a built-in braided USB-C cable, up to 140W single-device output, and an introductory price of 529 yuan ($78) on JD.com. If you’re searching for a Belkin 25,000mAh power bank with 140W output, […]