# Energy Conservation Program: Test Procedures for Battery Chargers and External Power Supplies (Standby Mode and Off Mode)
> **US Department of Energy** · Final rule. · Published 2009-03-27 · Effective 2009-04-27 · 74 FR 13318
## Document
- **Document number:** E9-6138
- **Category:** energy-efficiency
- **Sub-agency:** US Department of Energy
- **Federal Register citation:** 74 FR 13318
- **CFR reference:** 10 CFR 430
- **Publication date:** 2009-03-27
- **Effective date:** 2009-04-27
- **Energy docket:** Docket No. EERE-2008-BT-TP-0004
## Abstract

The Department of Energy (DOE) is amending its test procedures for battery chargers (BCs) and external power supplies (EPSs) to include provisions for measuring standby mode and off mode energy consumption, as directed by the Energy Independence and Security Act of 2007 (EISA 2007). Furthermore, DOE is adding to its single-voltage external power supply test procedure specifications for testing switch- selectable external power supplies. Finally, DOE is extending the current certification reporting requirements to the Class A external power supplies for which Congress established energy efficiency standards in EISA 2007.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/03/27/E9-6138/energy-conservation-program-test-procedures-for-battery-chargers-and-external-power-supplies-standby)
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