Ali 21V 3.3A Laptop Power Bank

Ali 21V 3.3A Laptop Power Bank

Ali Express Power Bank with 21V output,
You can select the voltage output like this:
3.6V, 5V (USB only), 6V, 9V, 12V, 15V, 16V, 19V, 21V
The output current is up to 3.3A
This is good to activate Laptop when needed!
You can put inside 3 batteries (18650) or 6 batteries
The build quality seems ok

Power Bank on Ebay: Power Bank On Ebay 21V 3.3A Ali