UL 2056 PDF

1 Scope

1.1 These requirements cover power banks, sometimes also known as portable USB chargers or portable back-up battery power, which are standalone devices that incorporate primary or secondary batteries for mobile powering of low voltage electronic devices.

1.2 These requirements cover products with the following power characteristics:

1. a) Input:
   1. 1) Supplied by isolated dc power source rated maximum 60 Vdc; or
   2. 2) Supplied by ac mains power source, through direct plug-in construction.
2. b) Output: Provides dc output(s) rated maximum 60 Vdc; and
3. c) The watt-hour rating of the power bank does not exceed 100 Wh.

1.3 These requirements are intended to reduce the risk of fire or explosion of power banks.

1.4 These requirements also cover products with integral photovoltaic cells as a power source.

1.5 These requirements do not cover products under the scope of the Standard for Portable Power Packs, UL 2743.

Summary of Topics

This revision of ANSI/CAN/UL 2056 dated February 18, 2025 includes changes to the enclosure requirements: 4.3 and 6.1.4.