Understanding Power Bank Capacity and Charging Performance
Power bank capacity is one of the most important factors to understand before purchasing a portable charger. Although capacity figures can help buyers compare models, they do not tell the entire story. Charging efficiency, device battery size, output power, and usage conditions also influence performance. What Does mAh Mean? Milliampere-hours, commonly written as mAh, measure electric charge capacity. Power banks often display ratings such as 5,000mAh, 10,000mAh, or 20,000mAh. These figures provide a useful starting point when comparing products. A 20,000mAh power bank stores more charge than a 10,000mAh model under the same rated conditions. However, the larger model is generally heavier and takes up more space, so capacity should be balanced against portability. How Many Times Can a Power Bank Charge a Phone? The number of possible charges depends on several factors. These include the phone's battery capacity, the power bank's usable energy, conversion losses, and whether th...