A leak-proof package for at least one defective battery containing corrosive liquid. The inventive package has at least three layers and includes an inner container configured to accept the battery therewithin, a fluid-impermeable intermediate container sealing the inner container therewithin, and an outer container enclosing the intermediate container such that the liquid-containing defective battery is protectively packaged for leak-free transportation. Another aspect of the present invention is a method for packaging at least one battery containing corrosive liquid by loading the battery into the inner container which is sealed within the intermediate container inside the locked outer container such that the liquid-containing defective battery is protectively packaged for leak-free transportation.