Is that official? In spanish, decades ago, the word for battery was "Pila" "Pila" is a heap of countable physical units, either stacked or disordered. But pila

Is that official? In spanish, decades ago, the word for battery was "Pila" "Pila" is a heap of countable physical units, either stacked or disordered. But pila is commonly a fixture for liquids, like septic tank is pila séptica And batteries were mostly lead-acid. Hence, a pile for/of acid.