This depends on the battery capacity of the device as well as the charging frequency. Generally speaking, a 5000mAh power bank can last approximately 1-2 full smartphone charges. This means if you fully charge your smartphone once a day using a 5000mAh power bank, the power bank can last about 1 or 2 days on average.

This depends on what device the 5000mAh power bank is charging as well as the battery capacity of the device. Typically, a 5000mAh power bank can fully charge a smartphone of regular capacity once or twice, or a tablet roughly once.

The difference mainly lies in these aspects:

Capacity: A 5000mAh power bank can provide around 1-2 smartphone charges, while a 20000mAh power bank can offer approximately 4-8 smartphone charges, given ideal conditions.

Appearance: A 20000mAh power bank is physically bulkier due to the need to store more electricity.

Recharge time: A 20000mAh power bank takes longer to recharge itself due to the larger battery capacity.

Price: 5000mAh power banks are usually cheaper than 20000mAh power banks since they have lower capacity. For example, the Anker 511 Power Bank (PowerCore Fusion 5K), a high-performance 5000mAh power bank that can charge an iPhone 13 Pro in 1.3 hours, costs only $29.99.

The maximum capacity of power banks allowed on flights can vary from airline to airline and region to region. As a rule of thumb, most airlines allow power banks of up to 100 watt-hours or 27,000mAh in carry-on luggage.

Yes, a 5000mAh power bank can charge a tablet or iPad. However, note that the number of full charges will be limited due to the larger battery capacity of tablets. Also, if your iPad utilizes lightning ports, a USB-C to Lightning cable may be needed to efficiently charge it.