I use an LED panel intend for photography on a light stand for grilling. It runs off AC or batteries and has exceptionally good colour rendering, which makes a big difference to me when cooking. You can even adjust the colour temperature. When it's raining I stick a ziplock bag over the light unit.
https://www.amazon.com/VILTROX-Portable-Camcorder-Brightness-3300K-5600K/dp/B07C9ZNY17/
https://i.imgur.com/JEbGyWT.jpg
https://i.imgur.com/DynGocw.jpg
https://i.imgur.com/8HI9PWV.jpg
https://i.imgur.com/QcPzZxr.jpg
As a bonus it also makes a nice work light.
