Batteries power many of the things we use and rely on every day. They might also be the only available power source in an emergency. Being prepared to power your personal need devices—things like cellphones, medical devices, and assistive technologies—during a power outage is a step toward individual resilience. Planning for power outages can include creating an emergency supply of batteries and other power sources. Here are some things to know about batteries that can help you create a supply that meets your needs. Battery Types & Kinds Contemporary batteries come in two primary types (primary and secondary) and kinds
