Anker 737 Power Bank (24,000mAh)

A high-capacity battery that outputs 140W, meaning it charges a laptop at close to mains speed rather than trickling. The display shows exact remaining capacity and live wattage, which removes the guesswork of four blinking dots. It is heavy at around 630g and sits at the airline carry-on limit for lithium capacity. For long travel days and location work where mains power is unavailable.