Asus laptop, my brother's new one, battery issue

My brother's new Asus Vivobook model k513e laptop has a battery problem; its health is 70% and there are some dents on the body that don't affect usage. The battery doesn't feel weak, and I've never noticed any slowdown during use, but it may discharge quickly. Comes with original charger. Its new price is 2900, asking for 1800, negotiable, located in Riyadh. The total ranges from 700 to 1500. Contact via WhatsApp at the listed number. 0568022869