(a) The following definitions refer to commercial battery chargers:

1. (1) Commercial battery charger systems (CBCS) or State-regulated BCS means a battery charger coupled with its batteries or battery chargers coupled with their batteries, including all rechargeable batteries, or devices incorporating a rechargeable battery, and the chargers used with them. CBCS include, but are not limited to:

   1. (i) electronic devices with a battery that are normally charged from AC line voltage or DC input voltage through an internal or external power supply and a dedicated battery charger;
   2. (ii) the battery and battery charger components of devices that are designed to run on battery power during part or all of their operations;
   3. (iii) dedicated battery systems primarily designed for electrical or emergency backup; and
   4. (iv) devices whose primary function is to charge batteries, along with the batteries they are designed to charge.
2. (2) These units include chargers for power tool batteries and chargers for automotive, AA, AAA, C, D, or 9V rechargeable batteries, as well as chargers for batteries used in larger industrial motive equipment and à la carte chargers.
3. (3) The charging circuitry of battery charger systems may or may not be located within the housing of the end-use device itself. In many cases, the battery may be charged with a dedicated external charger and power supply combination that is separate from the device that runs on power from the battery. State-regulated battery charger systems do not include federally regulated battery chargers that are covered under standards in 10 CFR section 430.32(z), as incorporated by reference in section 509.61 of this Part.

4. (4) Large battery charger system means a battery charger system (other than a battery charger system for golf carts) with a rated input power of more than 2 kW.

   (b) Standard requirements for commercial battery chargers.

   Large battery charger systems shall meet the applicable performance values in Table 2 and as is consistent with the efficiency levels established in. the California Code of Regulations, Title 20, section 1605.3(g)(6), as incorporated by reference in section 509.61 of this Part.

   Table 2: Requirements for Large Battery Charger Systems

   Performance Parameter		Standard
   Charge Return Factor (CRF)	100 percent, 80 percent Depth of discharge 40 percent Depth of discharge	Shall be ≤ 1.10 Shall be ≤ 1.15
   Power Conversion Efficiency		Shall be ≥ 89 percent
   Power Factor		Shall be ≥ 0.90
   Maintenance Mode Power (Eb = battery capacity of tested battery)		Shall be ≤ 10 + 0.0012EbW
   No Battery Mode Power		Shall be ≤ 10 W

(c) Test procedures for assuring compliance with the standards established in subdivision (b) of this section. The test method for large battery charger systems that are not federally regulated battery chargers or federally regulated uninterruptible power supplies is Energy Efficiency Battery Charger System Test Procedure Version 2.2 dated November 12, 2008 and published by ECOS and EPRI Solutions, with the following modifications:

1. (1) The test procedure shall be conducted for 100, 80, and 40 percent discharge rates for only one charge profile, battery capacity, and battery voltage. The manufacturer shall test one battery and one charge profile using the following criteria:

   1. (i) the charge profile with the largest charge return factor;
   2. (ii) the smallest rated battery capacity; and
   3. (iii) the lowest voltage battery available at that rated capacity.
2. (2) The battery manufacturer’s recommended end of discharge voltage may be used in place of values in Energy Efficiency Battery Charger System Test Procedure Version 2.2 part 1, section III.F, Table D, dated November 12, 2008, where the table's values are not applicable.