1.5 to 3 hours
The 3000 mah charging bank can be fully charged in 1.5-3 hours. The charging head with 1A output takes 3 hours to charge and can be fully charged. Charging with 2A output charging head takes 1.5 hours to be fully charged. 2A charger, the theoretical calculation should be 3000*1.2~1.3\/2000=1.8~2 hours, but considering the actual loss of charging, it is impossible to fully achieve the theoretical effect, so there is a loss, but in general, more than 2 hours should be completely full.
The 3000 mah charging treasure can only charge the mobile phone once, because the capacity of the 3000 mah charging treasure looks too small, it is not good with the battery of the mobile phone, the amount is almost large, and the three-star charging treasure can charge devices such as wristbands and watches.
So you can still buy a relatively large charging bank to charge your mobile phone, which is more convenient.
3000mah charging bank can charge 9.5 hours, because 3000ma current is larger