### Question
How does the law define button cell?


### Answer
Under *42 U.S.C. § 14302*, **button cell** is defined as:

> a button- or coin-shaped battery

#### Citation:
  - *42 U.S.C. § 14302*
  - Heading: **CHAPTER 137-MANAGEMENT OF RECHARGEABLE BATTERIES AND BATTERIES CONTAINING MERCURY > SUBCHAPTER I-GENERALLY**

