to change (something) for him, her, or it
Tengo uno viejo, voy a cambiarle la fecha.
I have an old one, I'm going to change the date on it.
— Los 400 golpes (1959)
Pero hasta este año no hemos podido cambiarle de apellido.
But we haven't been able to change his last name until this year.
— Running on Empty (1988)
Voy a cambiarle las baterías cuando regrese.
I’m going to change the batteries for him/her when I get back.
— Moonrise Kingdom: Amor Infantil (2012)