If a charger has been lost or stolen, below is a link to authentic replacement chargers to order depending on each device.
Lenovo L15
Lenovo 65W AC Power Adapter (Uses USB-C) $59.99
Apple Macbook Air 13 inch
30W USB-C Power Adapter and 2M USB-C Cable. $49.00 and $19.00
Lenovo Chromebook 300e
Lenovo 45W USB-C AC Adapter (Uses USB-C) $54.99