BS 3456-202-202.20:1990 : Specification for safety of household and similar electrical appliances — Part 202. Particular requirements — Section 202.20 Battery-powered tooth-brushes and their charging and battery assemblies
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This standard applies to rechargeable battery-powered motor-operated tooth-brushes for household and similar purposes, and to their charging and battery assemblies where recharging is accomplished by connecting the charging assembly to the supply mains.
BS 3456-202-202.20:1990 : Specification for safety of household and similar electrical appliances — Part 202. Particular requirements — Section 202.20 Battery-powered tooth-brushes and their charging and battery assemblies