Battery chargers – August 2016

Technical bulletin on developing the standard

Webinar – registration

Natural Resources Canada's Office of Energy Efficiency intends to add battery chargers as an energy-using product to Canada’s Energy Efficiency Regulations (the Regulations) in alignment with standards in the United States. This technical bulletin has been released to initiate the consultation process and to collect stakeholders’ views on the requirements being considered for battery chargers.

Input received during this stage of the process will inform the development of the Amendment 14 proposal.  In addition, the department will undertake a cost-benefit analysis using the best-available Canadian market data to assess the economic and environmental impacts of aligning these standards and to ensure Canadian consumers and businesses benefit from its implementation.

The Government of Canada intends to pre-publish a regulatory proposal in the Canada Gazette, Part I within approximately one year of this bulletin.


Battery chargers are not currently a regulated product. On June 13, 2016, the United States Department of Energy (U.S. DOE) issued a final rule, which established minimum energy performance standards (MEPS) for battery chargers. Compliance with these standards is required as of June 13, 2018.

Natural Resources Canada (NRCan) is considering moving battery chargers from Amendment 15, as initially posted in NRCan’s 2016-2018 Forward Regulatory Pan, and adding it to the list for Amendment 14.

Product description

A battery charger is a device that charges the batteries of end-use products, including battery chargers that are embedded in end-use products. For the purposes of this bulletin, battery chargers would not include UPS or back-up battery chargers.  

An uninterruptible power supply (UPS) is a power system, including convertors, switches and an energy storage that maintains the continuity of load power in the case of input power failure.

A back-up battery charger is a battery charger, other than a UPS:

  1. that is embedded in a separate end-use product that is designed to continuously operate using mains power (including end-use products that use external power supplies); and
  2. whose sole purpose is to recharge a battery used to maintain continuity of power in order to provide normal or partial operation of a product in case of input power failure.

The Regulations would be amended to introduce battery chargers, as described above.  Should the U.S. DOE issue a final rule related to UPS, NRCan would consider implementing changes through a future amendment to the Regulations.

Energy performance test procedure

NRCan is considering referencing the following energy performance testing standards:

  • United States Code of Federal Regulation (CFR) Title 10, Part 430, Subpart B, Appendix Y - Uniform Test Method for Measuring the Energy Conservation of Battery Chargers
  • CSA C381.2‑17 - Energy performance of battery-charging systems and uninterruptible power supplies

Energy performance standard

The MEPS being considered for battery chargers in the table below are aligned with United States Title 10 CFR §430.32.

MEPS under consideration for battery chargers
Product class description Nominal battery energy (Ebatt) Special characteristic of battery voltage Maximum UEC* as a function of battery energy
1 Low-energy ≤ 5 Wh Inductive connection in wet environments 3.04
2 Low-energy, low-voltage



< 100 Wh
< 4 V 0.1440 × Ebatt + 2.95
3 Low-energy,
4 – 10 V For Ebatt < 10 Wh,
UEC* = 1.42 
For Ebatt ≥ 10 Wh,
UEC* = 0.0255 × Ebatt + 1.16
4 Low-energy, high-voltage > 10 V 0.11 × Ebatt + 3.18
5 Medium-energy,


100 – 3000 Wh
< 20 V 0.0257 × Ebatt + 0.815
6 Medium-energy,
≥ 20 V 0.0778 × Ebatt + 2.4
7 High-energy > 3000 Wh - 0.0502 × Ebatt + 4.53

*UEC: Unit energy consumption

Effective dates

These Regulations could come into force upon publication in the Canada Gazette, Part II.

NRCan is considering applying the standards to battery chargers that are manufactured on or after June 13, 2018.

Labelling requirements

NRCan is not considering labelling requirements for battery chargers at this time.

Verification requirements

NRCan proposes that these products carry a third party verification mark indicating that the product meets the MEPS and that the information to be reported has been verified.

The verification mark is the mark of a Standards Council of Canada accredited certification body that operates an energy efficiency certification program for the product.

Reporting requirements

Energy efficiency reports

The energy efficiency report required for battery chargers would include the following product specific information in accordance with the above referenced standards (items 6‑17 are aligned with U.S. reporting requirements):

  1. product name (i.e. battery charger)
  2. brand name
  3. model number
  4. manufacturer name
  5. name of the certification body
  6. product class description
  7. 24-hour energy consumption, E24 in watt-hours (Wh)
  8. battery discharge energy, Ebatt in watt-hours (Wh)
  9. active (charge) mode power, in watts (W)
  10. maintenance mode power, in watts (W)
  11. standby (no-battery) mode power, in watts (W)
  12. off mode power, in watts (W), if applicable
  13. threshold charge time, Tcd in hours (h)
  14. maintenance mode test, in hours (h)
  15. unit energy consumption, UEC in kilowatt-hours per year (kWh/year)
  16. nominal output voltage, in volts (V), at highest and lowest output setting, if applicable
  17. manufacturer name and model number of external power supply used for testing, if applicable

The Regulations would apply to products imported or shipped inter-provincially for sale or lease in Canada. This report must be submitted, by the dealer, to NRCan before the product is imported into Canada or traded inter-provincially for the first time.

Import reports

A dealer who imports these products into Canada would include the following information on the customs release document:

  • name of product
  • model number
  • brand name
  • address of the dealer importing the product
  • purpose for which the product is being imported (i.e. for sale or lease in Canada without modification; for sale or lease in Canada after modification to comply with energy efficiency standards; or for use as a component in a product being exported from Canada)

Comments invited

The purpose of this bulletin is to provide stakeholders with technical detail required to comment on the requirements under consideration for battery chargers. 

Additional information on Canada’s Energy Efficiency Regulations including a current list of Standards Council of Canada accredited certification bodies can be found on the Department’s website.

We welcome your comments by September 9, 2016.  All correspondence should be forwarded to:

Office of Energy Efficiency
Natural Resources Canada
580 Booth Street
Ottawa, ON, K1A 0E4