How long the charging bank is charged is also related to the output of the adapter, and the capacity divided by the output of the adapter is the charging time. 50,000mah charging bank, with 1A output adapter charging, about 50 hours full, with 2A output adapter charging, about 25 hours full. In fact, the loss of the circuit board should be considered, and the charging time will be longer.
Because the charging treasure is sold very cheap, the cost is considered when designing, and a lot of protection circuits will not be added. Therefore, the general charging treasure does not support fast charging, and the charging current is generally maximum 1000 MA.