In addition to the definitions given in section 3 of the Consumer Product Safety Act (15 U.S.C. 2052 ) and section 5 of Reese's Law (Notes to 15 U.S.C. 2056e ), the following definitions apply for purposes of this part:
Button cell or coin battery means:
Consumer product containing button cell or coin batteries means a consumer product containing or designed to use one or more button cell or coin batteries, regardless of whether such batteries are intended to be replaced by the consumer or are included with the product or sold separately.
Ingestion hazard means a hazard caused by a person swallowing or inserting a button cell or coin battery into their body whereby:
Principal display panel means the display panel for a retail package of button cell or coin batteries that is most likely to be displayed, shown, presented, or examined under normal or customary conditions of display for retail sale. The principal display panel is typically the front of the package.
Secondary display panel means a display panel for a retail package of button cell or coin batteries that is opposite or next to the principal display panel. The secondary display panel is typically the rear or side panels of the package.
16 C.F.R. §1263.2