How charged should I have my quest 2 be if I don't plan on playing it for a while?

I plan on going upstate to visit my dad in September and am unsure if I will be able to bring my quest, though I read a lot that depending on its battery percentage, it can apparently stress it out if not used for a long period of time. The longest I probably might stay is a month and I don't want to come home to an unusable headset.