As demand for portable power continues to increase, so does the safety concern for the batteries used within portable power packs. It is critical to test these temporary power sources equipped with lead acid or lithium ion batteries for safety.

Booster packs and portable power packs have been available for some time. However, as batteries became more prevalent in all types of products, the public became more aware of new incidents and hazards associated with improper use of these battery operated products.

UL 2742 1st Edition was published on October 14, 2016 and covers devices that consist of one or more batteries housed within an enclosure and intended to be used as a portable power source for use where normal grid power is not available. It can have a booster function (ex: jump-start a car) and can also be used for emergency situations.

The devices are charged from an external supply source, but independently supply power to outputs on the device when used. The devices are not intended to act as an extension cord and are not intended to provide output power while plugged into the supply. Outputs may consist of one or more of the following: receptacles, USB connections from a limited power source, DC output jacks, and vehicle sockets. Devices may also provide an automotive booster function intended to provide starting power to a depleted vehicle battery in jump-start-type applications.

This standard is not intended for phone charging as that would be covered under UL 2056.