Which charger do you carry for your MBP 15"?

[ArcticBlue00]

Hi,
Currently I'm carrying the bundled 87W charger with my MacBook Pro 15" in my backpack, but it's too heavy to carry around with my other EDC. Could you recommend any other reliable charger with less weight as an alternative? (+ would it be safe to use a charger with less wattage than 87W for MBP 15"?)

 

[satcomer]

You should choose your own: The Best 8 Potable Laptop Battery Chargers for 2019.