Rechargeable batteries are used in thousands of applications ranging from cordless power tools, mobile phones and laptop computers, to hybrid electric vehicles, railroad signaling systems and aerospace applications.

Nickel is used in three main types of rechargeable batteries: nickel cadmium (NiCd), nickel metal hydride (NiMH), and lithium ion (Li-ion). By weight, NiCd batteries contain 10-25% nickel, NiMH batteries contain 30-45% nickel, and Li-ion batteries contain up to 5% nickel.

This advisory note seeks to provide advice to manufacturers and consumers on recycling nickel-containing rechargeable batteries.