Regardless of the fact that you would have inserted the battery in a charger, it seems possible that the battery wasn't inserted or the charger was not plugged into an outlet properly, resulting in an uncharged battery.
Ọbụna ma ọ bụrụ na ị batrịla batrị na chaja, ọ ga-ekwe omume na batrị adịghị etinye ya nke ọma ma ọ bụ anaghị etinyefe chaja n'ime ntinye nke ọma, nke pụtara na batrị ahụ adịghị akwụ ụgwọ.