Good laptop for writing on the go?

I do most of my writing on my Lenovo ideapad gaming 3, which is great for writing at my desk. Unfortunately its size and battery life don't make it very portable.

I cary a tablet and Bluetooth keyboard for writing on the go, but the small size of the keyboard makes it uncomfortable to use for extended periods.

I'm looking for somewhat of an "in-between" option with a good keyboard and decent battery life (ideally not too expensive since I already have a nice main laptop and tablet).

Any suggestions?