Therefore, a power bank with a higher mAh value will last longer. The mAh value is a good way to estimate how long a battery will last on a power bank when the user is constantly using the power. A 5,000 mAh battery in a power bank will provide enough juice to charge your smartphone for several days.
A high-quality power bank can keep its charge for up to 6 months. While a low-quality power bank can hold its charge for up to 4 weeks. 1 Why Do Power Banks Lose Their Charge Over Time? 2 How To Make Power Bank Hold Its Charge Longer? 2.1 1. Use a High-Quality and Capacity Power Bank 2.2 2. Store in a Cool Environment 2.3 3. Avoid full Discharge
These two things decide how long it takes to get a full charge. A power bank with 10,000mAh might take 4 to 8 hours to fully charge with a 5V/2A input. If you have a power bank that holds 20,000mAh or more, it could take 8 to 12 hours. The charging cycles also affect the battery life and how long it takes to charge over time.
Battery capacity: The battery capacity is the amount of electrical charge that a power bank can store. It is usually measured in milliampere-hours (mAh). The higher the battery capacity, the more charge the power bank can store, allowing it to provide power for a more extended period.
For example, a 10,000mAh power bank can potentially charge a device with a 2,500mAh battery around four times before it needs to be recharged itself. However, it’s important to note that power banks are not 100% efficient, and there is always some energy loss during the charging and discharging process.
A power bank, also known as a portable charger or external battery pack, is a portable device that allows you to charge your electronic devices when you are on the go. It is essentially a portable power supply that stores electrical energy in its built-in battery for later use.