On June 13, 2016, the U.S. energy department (DOE) issued the laws and regulations of the efficiency for battery charger EERE-2008-BT-STD-0005-0256, and it aim to control battery charger for consumer products including battery chargers that are embedded in the end product, such as mobile phones and digital cameras. This regulation has taken effect from August 12, 2016 and enforced on June 13, 2018. It means that most of products with rechargeable batteries must meet the requirements of DOE battery charger before entering the U.S. market from June 13, 2018.

Detailed product classification and corresponding limit requirements are as below:

DOE battery charger regulation website link: