Wattage a laptop takes when strictly charging?

So I have a Laptop I want to get (Acer Nitro 5 with 1050 ti) and it comes with a 150 watt charger. When the Laptop is charging without me using it, does it use the entire 150 watts to charge? I'm thinking about getting a battery bank and the one I'm looking at only goes up to 100 watts for the ac adapter. I... show more So I have a Laptop I want to get (Acer Nitro 5 with 1050 ti) and it comes with a 150 watt charger. When the Laptop is charging without me using it, does it use the entire 150 watts to charge? I'm thinking about getting a battery bank and the one I'm looking at only goes up to 100 watts for the ac adapter. I need to know about watts only.

Thank you!
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