If it is to charge a 12v device, the current can exceed 1a, the general device can also be taken up, the notebook is generally 19v, 1a current may not be enough
The charging treasure can definitely be changed to 18 watts of charging, because the charging treasure is basically a battery, and the charging power is basically controlled by the charging control board, so you can add an 18 watt charger outside the charging treasure, and the charger is basically to set the hardware to 18 watts of output. You can change the power bank to 18-watt charging.