myrkky Ei mitään lisääntyä round battery sizes jossain määrin arkkitehti myöntää
round cell battery for Electronic Appliances - Alibaba.com
Why are batteries named as they are and why do we go from AA to C with no A or B? - Quora
HSE Ireland - Button batteries are small, round batteries that come in many different sizes and types. Keep all spare and used batteries out of children's sight and reach at all times