California Code, Health and Safety Code - HSC § 26302

(1) The storage battery is designed for a powered mobility device and has been tested by an accredited testing laboratory for compliance with ANSI/CAN/UL 2271 or other safety standard for powered mobility devices as the office has established by rule.

(2) The storage battery is designed for an electric bicycle and has been tested by an accredited testing laboratory for compliance with a battery standard referenced in ANSI/CAN/UL 2849, EN 15194, or other safety standard as the office has established by rule, or is part of a complete electrical system for an electric bicycle that has been tested by an accredited laboratory for compliance with ANSI/CAN/UL 2849, EN 15194, or other safety standard as the office has established by rule.

(e)(1) A person shall not distribute, sell, lease, or offer for sale or lease an electric bicycle, powered mobility device, charging system, or storage battery unless the logo, wordmark, label, or name of an accredited testing laboratory and the applicable certification standard used to show compliance is permanently affixed directly on the electric bicycle or its electrical system, the powered mobility device, the charging system, or the battery of the electric bicycle or powered mobility device.

(2) A person shall not be required to display the logo, wordmark, label, or name of an accredited testing laboratory if the electric bicycle, powered mobility device, charging system, or storage battery is being sold or leased secondhand.