This depends on the battery capacity of the device you are charging. Assuming that the battery capacity of the device you want to charge is 3000 mah, then a 20,000 mah magnetic charging bank can be charged about 6-7 times. Of course, there are also some factors to consider, such as whether your power bank has been used for a while, and whether you are using a fast charge or a normal charge. In general, a 20,000 mah magnetic charging bank is more practical, can be used on the road or daily use to charge your various devices.
The number of times that the 20000 mah magnetic charging bank can charge the mobile phone varies according to the mobile phone battery capacity and the use of the mobile phone, under normal circumstances, the mobile phone with a battery capacity of about 3000 mah can be charged about 6-7 times, and the mobile phone with a smaller battery capacity can be charged more times. However, the charging efficiency of the magnetic power bank decreases with time and frequency of use, so regular maintenance and maintenance are required to ensure its maximum charging effect.