Word that means "adding money to a phone payment account"

I am looking for a word that means "adding money into a phone payment account".

I thought of these:

• "recharge"

  Disadvantage: Indian English. Only used in South Asian and Southeast Asian varieties of English.

• "top-up"

  Disadvantage: British English. Only understood by the British. Americans will find this weird.

Is there a better word that means "adding money to a phone payment account"? If there is none, what is an unambiguous phrase that can be used worldwide?