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How many mAh should a good external battery have?
A good power bank should have a capacity of at least 10,000 mAh (milliampere hours) to effectively charge most devices multiple times. However, for more intensive use or for charging multiple devices, external batteries with a capacity of 20,000 mAh or more are often preferred.
The right capacity depends on your needs, such as how many devices you plan to charge and how often you use the power bank.
The capacity of a power bank is usually measured in milliamp hours (mAh).
Common capacities range from 5,000 mAh to 30,000 mAh. For general use, an external battery with a capacity of 10,000 mAh to 20,000 mAh is usually sufficient, as it can charge smartphones and tablets several times before needing to be recharged itself.
What mAh for an external battery?
To determine if a power bank is good, consider factors like capacity (mAh), output current (measured in amps), charging speed, build quality, and brand reputation.
A good power bank should offer a balance of capacity and portability, have reliable output for quickly charging devices, and be built with quality materials.
Additionally, user reviews and ratings can provide insight into the performance and reliability of the power bank.
How much power bank is enough?
A 10,000 mAh power bank can last for several charges depending on the battery capacity of the device.
For example, if you are charging a smartphone with a 2500 mAh battery, a 10000 mAh power bank could potentially charge it up to 4 times (10000 mAh / 2500 mAh = 4). Actual number of charges may be slightly lower due to energy loss during conversion.
A 20,000 mAh power bank can also provide multiple charges depending on the device’s battery capacity. For example, with a 2,500 mAh smartphone battery, it could potentially charge the device up to 8 times (20,000 mAh / 2,500 mAh = 8).
As with any power bank, the actual number of charges will be slightly lower due to efficiency losses and power conversion.
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