Must a vow to name a male newborn "Khalid" be fulfilled, given the desire to name him "Battal"?

If you swore to name the newborn "Khalid" and then wished to name him something else, you must offer expiation for breaking an oath, as Allah Almighty says: (Allah will not impose blame upon you for what is unintentional in your oaths, but He will impose blame upon you for what you intended in your oaths. So its expiation is the feeding of ten needy people from the average of that which you feed your [own] families or clothing them or freeing a slave. But whoever finds not [the means] - then a fast of three days. That is the expiation for oaths when you have sworn. And guard your oaths. Thus does Allah make clear to you His verses that you may be grateful) Al-Ma'idah/89. There is no connection between the name of the newborn and fearing for him; rather, ask Allah to protect him and choose a good name for him, as this is religiously recommended.