You'll be fine with your laptop's battery but if you plan to use it during the flight, make sure that you take a much smaller PD charger with you. I have a Lenovo Legion 5 that came with a whopping 300w charging brick. Needless to say it does not work plugged into airplane AC outlets. I have both a 65w and a 100w PD charger for it now. The 65w is very slow but does support web browsing, MS apps, etc., anything that doesn't require the discrete graphics card. The 100w is much better but not sure yet if it'll work on the plane or not. Will be testing it next month. Of course I'm assuming here that your laptop does support PD charging (USB C), if not you'll need to look for a low wattage Alienware or Dell (are they the same?) charging brick. JL's website says the AC outlets support 75w output, but I'll be a bit surprised if my 100w PD charger doesn't work since it doesn't actually pull that much most of the time, I have cables with LCD meters on them and most of the time the PC pulls 50-70w even if charging during use.