8C-i 

APPENDIX 8C. END-USE APPLICATION INPUTS FOR THE LIFE-CYCLE 

COST ANALYSIS

TABLE OF CONTENTS

8C.1 INTRODUCTION ..................................................................................................8C-1

8C.2 END-USE APPLICATION SELECTION METHODOLOGY .............................8C-1

8C.3 SUMMARIZED END-USE APPLICATION INPUTS .........................................8C-1

8C.3.1 Class A External Power Supplies ...........................................................................8C-1

8C.3.2 Battery Chargers .....................................................................................................8C-4

8C.3.3 Scaled Battery Charger Product Classes .................................................................8C-9

8C.4 END-USE APPLICATION SAMPLING .............................................................8C-13

LIST OF TABLES

Table 8C.3.1 End-Use Application Inputs for 2.5 Watt Class A External Power Supplies .....8C-2

Table 8C.3.2 End-Use Application Inputs for 18 Watt Class A External Power Supplies ......8C-3

Table 8C.3.3 End-Use Application Inputs for 60 Watt Class A External Power Supplies ......8C-4

Table 8C.3.4 End-Use Application Inputs for 120 Watt Class A External Power Supplies ....8C-4

Table 8C.3.5 End-Use Application Inputs for Low Energy, Inductive Battery Chargers ........8C-5

Table 8C.3.6 End-Use Application Inputs for Low Energy, Low Voltage Battery 

Chargers .......................................................................................................8C-6

Table 8C.3.7 End-Use Application Inputs for Low Energy, High Voltage Battery 

Chargers .......................................................................................................8C-7

Table 8C.3.8 End-Use Application Inputs for Medium Energy, Low Voltage Battery 

Chargers .......................................................................................................8C-8

Table 8C.3.9 End-Use Application Inputs for High Energy Battery Chargers ........................8C-8

Table 8C.3.10 End-Use Application Inputs for Low Energy, AC Out Battery Chargers.........8C-8

Table 8C.3.11 End-Use Application Inputs for Low Energy, Medium Voltage Battery 

Chargers .....................................................................................................8C-10

Table 8C.3.12 End-Use Application Inputs for Medium Energy, High Voltage Battery 

Chargers .....................................................................................................8C-11

Table 8C.3.13 End-Use Application Inputs for DC-DC, <9V Input Battery Chargers ..........8C-12

Table 8C.3.14 End-Use Application Inputs for DC-DC, ≥9V Input Battery Chargers ..........8C-13

Table 8C.4.1 Shipment-Weighted Inputs for Class A Representative Units ..........................8C-14

Table 8C.4.2 Shipment-Weighted Inputs for Battery Charger Representative Units .............8C-15

Table 8C.4.3 Shipment-Weighted Inputs for Scaled Battery Charger Product Classes .........8C-16

EERE-2008-BT-STD-0005 COMMENT 31
8C-1

APPENDIX 8C. END-USE APPLICATION INPUTS FOR THE LIFE-CYCLE COST 

ANALYSIS

8C.1 INTRODUCTION

There are a number of end-use applications (“applications”) encompassed by each 

representative unit examined in the analysis, and this can create a wide range of life-cycle cost 

(LCC) and payback period (PBP) results within each representative unit. This is because many 

of the same external power supply (EPS) or battery charger (BC) specifications can be used for a 

variety of applications. Since many of the inputs to the life-cycle cost (LCC) model are 

dependent on the particular application, such as product lifetime, DOE considers an array of 

popular applications when evaluating each representative unit. 

8C.2 END-USE APPLICATION SELECTION METHODOLOGY

DOE compiled its list of relevant applications for the LCC analysis based on the total 

shipments of an application within a representative unit’s output power or battery energy and 

voltage range for EPSs and BCs, respectively. DOE defines the battery energy and voltage range 

similarly to the product class delineations, while it defines the output power range as the 

midpoint between two representative units’ values for output power. For example, given three 

Class A EPS representative units at 2.5, 18, and 60 Watts (W) of output power, the 18W unit 

would consider applications that have an output power between 10 to 39W. This is because 10W 

is the midpoint between 2.5W and 18W, and 39W is the midpoint between 18W and 60W. 

Using these range definitions, DOE classifies the relevant applications for each representative 

unit and calculates the total shipments for each application.

DOE then collected all the relevant information needed as inputs for each of these 

applications. This data includes shipments, lifetime, markups, unit energy consumption (UEC), 

and market share at each CSL. These inputs are explained in more detail in chapters 6, 7, and 10 

of the preliminary analysis.

8C.3 SUMMARIZED END-USE APPLICATION INPUTS

8C.3.1 Class A External Power Supplies

Table 8C.3.1 through Table 8C.3.4 summarizes DOE’s findings for the applications 

associated with Class A EPSs. Each representative unit contains multiple applications so the 

representative units are shown separately. While each representative unit may contain 10 or 

more relevant applications, this appendix only shows data for the top nine applications for each 

representative unit. These nine applications comprise over 98-percent of total shipments for a 

representative unit. For further detail on application data, including the calculation of UECs, 

please see chapter 7 of the TSD.

EERE-2008-BT-STD-0005 COMMENT 31
8C-2

Table 8C.3.1 End-Use Application Inputs for 2.5 Watt Class A External Power Supplies 

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL Unit Energy 

Consumption

kWh/yr

Market 

Share

%

Answering 

Machines

20,175 5.0 206 // 132 0 5.0 34.0

1 3.3 50.7

2 2.8 12.0

3 2.5 3.3

4 2.4 0.0

Cordless Phones 19,151 5.3 206 // 132 0 5.0 34.0

1 3.3 50.7

2 2.8 12.0

3 2.5 3.3

4 2.4 0.0

Mobile Phones 13,140 4.0 214 // 146 0 2.6 34.0

1 1.6 50.7

2 1.1 12.0

3 0.9 3.3

4 0.8 0.0

Portable Video 

Game Systems

10,884 3.0 227 // 145 0 2.9 34.0

1 1.8 50.7

2 0.8 12.0

3 0.7 3.3

4 0.4 0.0

In-Vehicle GPS 7,660 5.0 260 // 169 0 0.2 34.0

1 0.1 50.7

2 0.1 12.0

3 0.1 3.3

4 0.1 0.0

Baby Monitors 3,000 4.0 217 // 133 0 4.1 34.0

1 2.6 50.7

2 1.9 12.0

3 1.7 3.3

4 1.5 0.0

Clock Radios 485 4.7 211 // 134 0 9.4 34.0

1 6.2 50.7

2 5.4 12.0

3 4.7 3.3

4 4.6 0.0

Caller ID Devices 460 5.0 206 // 132 0 9.4 34.0

1 6.2 50.7

2 5.4 12.0

3 4.7 3.3

4 4.6 0.0

Keyboards 419 6.0 217 // 133 0 4.5 34.0

1 2.7 50.7

2 1.3 12.0

3 1.0 3.3

4 0.6 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-3

Table 8C.3.2 End-Use Application Inputs for 18 Watt Class A External Power Supplies 

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL Unit Energy 

Consumption

kWh/yr

Market 

Share

%

LAN Equipment 27,581 4.0 189 // 131 0 22.6 34.0

1 17.6 50.7

2 14.7 12.0

3 12.2 3.3

4 10.3 0.0

VoIP Adapters 8,845 5.0 206 // 132 0 6.1 34.0

1 4.0 50.7

2 3.0 12.0

3 2.0 3.3

4 1.5 0.0

Digital Picture 

Frames

7,472 5.0 214 // 126 0 29.9 34.0

1 23.2 50.7

2 19.4 12.0

3 16.1 3.3

4 13.6 0.0

Portable DVD 

Players

7,140 4.0 217 // 133 0 1.0 34.0

1 0.7 50.7

2 0.6 12.0

3 0.5 3.3

4 0.4 0.0

MP3 Speaker 

Docks

7,012 4.0 211 // 134 0 5.8 34.0

1 3.8 50.7

2 2.8 12.0

3 1.8 3.3

4 1.3 0.0

Computer Speakers 3,880 5.0 189 // 131 0 14.2 34.0

1 10.6 50.7

2 8.6 12.0

3 6.8 3.3

4 5.6 0.0

Wireless Speakers 1,507 5.0 189 // 131 0 5.8 34.0

1 3.8 50.7

2 2.8 12.0

3 1.8 3.3

4 1.3 0.0

Camcorders 1,402 4.9 214 // 126 0 0.6 34.0

1 0.4 50.7

2 0.4 12.0

3 0.3 3.3

4 0.2 0.0

Portable Printers 614 5.0 199 // 131 0 0.6 34.0

1 0.4 50.7

2 0.4 12.0

3 0.3 3.3

4 0.2 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-4

Table 8C.3.3 End-Use Application Inputs for 60 Watt Class A External Power Supplies 

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL Unit Energy 

Consumption

kWh/yr

Market 

Share

%

Notebook 

Computers

30,225 3.3 189 // 131 0 10.9 34.0

1 9.7 50.7

2 8.1 12.0

3 6.8 3.3

4 5.0 0.0

Video Game 

Consoles

13,512 5.0 227 // 145 0 13.4 34.0

1 11.9 50.7

2 9.9 12.0

3 8.3 3.3

4 6.1 0.0

Ink Jet Imaging 

Equipment

5,557 5.0 199 // 131 0 13.7 34.0

1 12.0 50.7

2 10.5 12.0

3 9.1 3.3

4 6.6 0.0

Netbook 

Computers

3,700 3.5 189 // 131 0 8.9 34.0

1 7.9 50.7

2 6.5 12.0

3 5.4 3.3

4 4.0 0.0

Table 8C.3.4 End-Use Application Inputs for 120 Watt Class A External Power Supplies 

Application Shipments

in 1,000’s

Lifetime

yrs

Markups

(Baseline // 

Incremental)

%

CSL Unit Energy 

Consumption

kWh/yr

Market 

Share

%

Notebook 

Computers

10,075 3.3 189 // 131 0 19.3 34.0

1 16.7 50.7

2 14.1 12.0

3 13.4 3.3

4 9.4 0.0

LED Monitors 160,000 4.0 189 // 131 0 28.6 34.0

1 24.7 50.7

2 21.1 12.0

3 20.1 3.3

4 14.0 0.0

8C.3.2 Battery Chargers

Table 8C.3.6 through Table 8C.3.10 summarizes DOE’s findings for the applications 

associated with BCs. Each representative unit contains multiple applications so the 

representative units are shown separately. While each representative unit may contain 10 or 

more relevant applications, this appendix only shows data for the top 10 applications for each 

representative unit. These 10 applications comprise between 93- to 100-percent of total 

shipments for a representative unit. 

EERE-2008-BT-STD-0005 COMMENT 31
8C-5

 DOE conducted an LCC analysis for two sets of BC engineering outputs using 

manufacturer provided data and data collected through testing and teardowns (“test/teardown”). 

The application-specific data for each of these data types are identical except for the UEC data, 

which is shown separately for manufacturer data and test/teardown data. For further detail on 

application data, including the calculation of UECs, please see chapter 7 of the TSD. 

Table 8C.3.5 End-Use Application Inputs for Low Energy, Inductive Battery Chargers

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Unit Energy 

Consumption

(Test / 

Teardown)

kWh/yr

Market 

Share

%

Rechargeable 

Toothbrushes

4,868 5.0 200 // 123 0 10.0 N/A 75.0

1 7.0 N/A 12.5

2 3.5 N/A 12.5

3 1.5 N/A 0.0

Rechargeable 

Water Jets

487 5.0 200 // 123 0 10.0 N/A 75.0

1 7.0 N/A 12.5

2 3.5 N/A 12.5

3 1.5 N/A 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-6

Table 8C.3.6 End-Use Application Inputs for Low Energy, Low Voltage Battery Chargers 

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Unit Energy 

Consumption 

(Test / 

Teardown)

kWh/yr

Market 

Share

%

Mobile 

Phones

105,120 2.0 214 // 146 0 10.8 7.7 39.2

1 5.8 7.7 58.0

2 0.7 1.2 2.8

3 N/A N/A 0.0

Answering 

Machines

20,175 5.0 206 // 132 0 13.6 10.7 39.2

1 9.6 10.7 58.0

2 2.5 1.8 2.8

3 N/A N/A 0.0

Cordless 

Phones

19,151 5.3 206 // 132 0 13.6 10.7 39.2

1 9.6 10.7 58.0

2 2.5 1.8 2.8

3 N/A N/A 0.0

Portable 

Video Game 

Systems

13,777 3.0 227 // 145 0 6.6 4.4 39.2

1 4.6 4.4 58.0

2 1.2 0.8 2.8

3 N/A N/A 0.0

Digital 

Cameras

10,879 6.0 214 // 126 0 1.4 1.0 39.2

1 0.8 1.0 58.0

2 0.1 0.2 2.8

3 N/A N/A 0.0

Shavers 6,579 4.1 200 // 123 0 9.5 7.4 39.2

1 6.1 7.4 58.0

2 1.8 0.9 2.8

3 N/A N/A 0.0

MP3 Players 4,373 4.0 211 // 134 0 6.6 4.4 39.2

1 4.6 4.4 58.0

2 1.2 0.8 2.8

3 N/A N/A 0.0

Home 

Security 

Systems

4,219 7.3 204 // 131 0 15.7 12.5 39.2

1 9.6 12.5 58.0

2 3.1 1.1 2.8

3 N/A N/A 0.0

Consumer 

Two-Way 

Radios

4,177 5.0 214 // 146 0 8.3 5.9 39.2

1 4.5 5.9 58.0

2 0.5 0.9 2.8

3 N/A N/A 0.0

In-Vehicle 

GPS

3,830 5.0 260 // 169 0 1.8 1.4 39.2

1 0.9 1.4 58.0

2 0.0 0.2 2.8

3 N/A N/A 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-7

Table 8C.3.7 End-Use Application Inputs for Low Energy, High Voltage Battery Chargers 

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Unit Energy 

Consumption 

(Test / 

Teardown)

kWh/yr

Market 

Share

%

Notebook 

Computers

40,300 3.3 189 // 131 0 32.9 45.5 18.7

1 10.0 11.6 43.0

2 6.2 5.7 38.3

3 N/A N/A 0.0

Professional 

Power Tools

11,688 5.4 214 // 134 0 79.4 26.3 18.7

1 15.9 9.0 43.0

2 7.6 9.9 38.3

3 N/A N/A 0.0

DIY Power 

Tools 

(External)

5,259 5.9 214 // 134 0 20.5 17.7 18.7

1 5.8 5.3 43.0

2 3.1 3.4 38.3

3 N/A N/A 0.0

Netbook 

Computers

3,700 3.5 189 // 131 0 33.1 41.3 18.7

1 10.1 10.7 43.0

2 6.1 5.8 38.3

3 N/A N/A 0.0

Handheld 

Vacuums

2,797 6.0 200 // 130 0 32.7 52.4 18.7

1 9.8 12.9 43.0

2 6.5 5.4 38.3

3 N/A N/A 0.0

Toy Ride-On 

Vehicles

1,774 4.0 231 // 137 0 21.9 10.8 18.7

1 4.8 3.3 43.0

2 2.4 2.9 38.3

3 N/A N/A 0.0

Stick 

Vacuums

1,752 6.0 200 // 130 0 32.7 52.4 18.7

1 9.8 12.9 43.0

2 6.5 5.4 38.3

3 N/A N/A 0.0

Robotic 

Vacuums

1,000 6.0 200 // 130 0 36.9 52.8 18.7

1 11.2 13.4 43.0

2 7.1 6.3 38.3

3 N/A N/A 0.0

Sleep Apnea 

Machines

500 8.0 253 // 148 0 30.1 51.9 18.7

1 9.0 12.6 43.0

2 6.2 4.9 38.3

3 N/A N/A 0.0

Medical 

Nebulizers

450 7.0 253 // 148 0 36.0 38.8 18.7

1 11.4 14.3 43.0

2 6.0 6.0 38.3

3 N/A N/A 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-8

Table 8C.3.8 End-Use Application Inputs for Medium Energy, Low Voltage Battery 

Chargers

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Unit Energy 

Consumption 

(Test / 

Teardown)

kWh/yr

Market 

Share

%

Toy Ride-On 

Vehicles

1,774 4.0 231 // 137 0 235.4 248.4 43.4

1 179.2 201.7 16.3

2 127.7 N/A 40.3

3 95.9 N/A 0.0

Marine, 

Automotive, 

and RV 

Chargers

500 10.0 231 // 137 0 103.3 198.5 43.4

1 99.1 116.2 16.3

2 10.6 N/A 40.3

3 7.3 N/A 0.0

Portable O2 

Concentrators 

(Various)

50 11.0 253 // 148 0 48.0 50.5 43.4

1 36.5 41.1 16.3

2 26.1 N/A 40.3

3 19.6 N/A 0.0

Portable O2 

Concentrators 

(Higher 

Output)

9 11.0 253 // 148 0 48.0 50.5 43.4

1 36.5 41.1 16.3

2 26.1 N/A 40.3

3 19.6 N/A 0.0

Table 8C.3.9 End-Use Application Inputs for High Energy Battery Chargers

Application Shipments

in 1,000’s

Lifetime

yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Unit Energy 

Consumption 

(Test / 

Teardown)

kWh/yr

Market 

Share

%

Golf Carts 214 6.4 231 // 137 0 290.0 N/A 50.0

1 250.0 N/A 20.0

2 200.0 N/A 30.0

3 150.0 N/A 0.0

Table 8C.3.10 End-Use Application Inputs for Low Energy, AC Out Battery Chargers 

Application Shipments

in 1,000’s

Lifetime

yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Unit Energy 

Consumption 

(Test / 

Teardown)

kWh/yr

Market 

Share

%

Uninterruptible 

Power Supplies

6,900 6.0 201 // 135 0 19.6 19.6 88.9

1 6.4 6.4 11.1

2 4.0 N/A 0.0

3 1.5 N/A 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-9

8C.3.3 Scaled Battery Charger Product Classes

DOE also examined LCC results for the battery charger product classes that were scaled 

rather than directly analyzed as a representative unit. Table 8C.3.11 through Table 8C.3.14

summarizes DOE’s findings for the applications associated with these scaled BC product classes. 

Each product class contains multiple applications so the product classes are shown separately. 

While each product class may contain 10 or more relevant applications, this appendix only 

shows data for the top 10 applications for each product class. These 10 applications comprise 

between 98- to 100-percent of total shipments for a product class. DOE examined manufacturer 

data for the scaled product classes, but not test/teardown data. 

EERE-2008-BT-STD-0005 COMMENT 31
8C-10

Table 8C.3.11 End-Use Application Inputs for Low Energy, Medium Voltage Battery 

Chargers

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

% 

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Market 

Share

% 

Portable 

DVD Players

7,140 4.0 217 // 133 0 6.4 34.0

1 3.6 54.0

2 0.4 12.0

3 N/A 0.0

Camcorders 4,206 4.9 214 // 126 0 0.8 34.0

1 0.4 54.0

2 0.1 12.0

3 N/A 0.0

Toy Ride-On 

Vehicles

3,548 4.0 231 // 137 0 11.3 34.0

1 5.5 54.0

2 2.0 12.0

3 N/A 0.0

RC Toys 2,100 2.0 227 // 145 0 2.3 34.0

1 1.1 54.0

2 0.4 12.0

3 N/A 0.0

DIY Power 

Tools 

(External)

1,753 5.9 214 // 134 0 10.7 34.0

1 5.4 54.0

2 2.1 12.0

3 N/A 0.0

Handheld 

Vacuums

1,377 6.0 200 // 130 0 38.8 34.0

1 21.5 54.0

2 2.2 12.0

3 N/A 0.0

DIY Power 

Tools 

(Integral)

1,169 5.9 214 // 134 0 20.0 34.0

1 11.1 54.0

2 1.1 12.0

3 N/A 0.0

Stick 

Vacuums

863 6.0 200 // 130 0 38.8 34.0

1 21.5 54.0

2 2.2 12.0

3 N/A 0.0

Air Mattress 

Pumps

250 5.0 217 // 133 0 2.3 34.0

1 1.1 54.0

2 0.4 12.0

3 N/A 0.0

Universal 

Battery 

Chargers

240 6.0 217 // 133 0 28.1 34.0

1 15.4 54.0

2 1.6 12.0

3 N/A 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-11

Table 8C.3.12 End-Use Application Inputs for Medium Energy, High Voltage Battery 

Chargers

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

% 

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Market 

Share

% 

Electric 

Scooters

250 10.0 231 // 137 0 65.9 50.0

1 39.4 20.0

2 23.5 30.0

3 16.8 0.0

Mobility 

Scooters

192 10.0 231 // 137 0 85.3 50.0

1 61.6 20.0

2 36.7 30.0

3 27.4 0.0

Lawn 

Mowers

182 6.0 214 // 134 0 45.3 50.0

1 8.8 20.0

2 5.3 30.0

3 2.1 0.0

Wheelchairs 166 9.7 231 // 137 0 85.3 50.0

1 61.6 20.0

2 36.7 30.0

3 27.4 0.0

Motorized 

Bicycles

150 7.0 231 // 137 0 65.9 50.0

1 39.4 20.0

2 23.5 30.0

3 16.8 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-12

Table 8C.3.13 End-Use Application Inputs for DC-DC, <9V Input Battery Chargers

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Market 

Share

%

MP3 Players 39,358 4.0 211 // 134 0 1.3 39.2

1 0.8 58.0

2 0.5 2.8

3 N/A 0.0

Mobile 

Phones

26,280 2.0 214 // 146 0 2.0 39.2

1 1.1 58.0

2 0.7 2.8

3 N/A 0.0

Digital 

Cameras

2,720 6.0 214 // 126 0 0.3 39.2

1 0.2 58.0

2 0.1 2.8

3 N/A 0.0

Personal 

Digital 

Assistants

1,779 4.0 189 // 131 0 0.9 39.2

1 0.5 58.0

2 0.3 2.8

3 N/A 0.0

Camcorders 1,402 4.9 214 // 126 0 0.1 39.2

1 0.1 58.0

2 0.0 2.8

3 N/A 0.0

Bluetooth 

Headsets

140 5.0 214 // 146 0 2.2 39.2

1 1.4 58.0

2 0.8 2.8

3 N/A 0.0

E-Books 116 4.9 217 // 133 0 0.4 39.2

1 0.2 58.0

2 0.1 2.8

3 N/A 0.0

Handheld 

GPSs

30 5.0 260 // 169 0 0.4 39.2

1 0.2 58.0

2 0.1 2.8

3 N/A 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-13

Table 8C.3.14 End-Use Application Inputs for DC-DC, ≥9V Input Battery Chargers 

Application Shipments

in 1,000’s

Lifetime

Yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Market 

Share

%

In-Vehicle 

GPS

15,320 5.0 260 // 169 0 1.2 39.2

1 0.8 58.0

2 0.5 2.8

3 N/A 0.0

Medical 

Nebulizer

90 7.0 253 // 148 0 9.3 39.2

1 5.7 58.0

2 3.4 2.8

3 N/A 0.0

Portable O2 

Concentrators 

(Others)

50 11.0 253 // 148 0 1.2 39.2

1 0.8 58.0

2 0.5 2.8

3 N/A 0.0

Flashlights 

and Lanterns

50 10.0 217 // 133 0 2.9 39.2

1 1.4 58.0

2 0.7 2.8

3 N/A 0.0

Portable O2 

Concentrators 

(Higher 

Output)

9 11.0 253 // 148 0 1.2 39.2

1 0.8 58.0

2 0.5 2.8

3 N/A 0.0

8C.4 END-USE APPLICATION SAMPLING

 DOE uses the list of relevant applications for each representative unit to approximate the 

input variables for that unit. To do this, DOE weights each application within a given 

representative unit by that application’s shipments as a percentage of the total shipments for the 

unit. DOE then uses these weighted inputs for the LCC calculations. DOE believes an 

application’s shipments are an accurate index of consumer purchases relative to other 

applications within a year. While some of DOE’s analyses in this preliminary analysis focus on 

an application’s install base to approximate the level of ownership for a given product, DOE 

finds that shipments better reflect consumer purchasing events within a year, which is the object 

of concern in the LCC and PBP analysis.

 In the Monte Carlo simulation analysis, DOE samples an application from each 

representative unit for each trial that is run. The applications are sampled based on their 

shipment-weighted probabilities. All of the application’s input variables are used when it is 

selected in a trial. These input variables include lifetime, markups, UEC, and market share at 

each CSL. The resulting LCC findings are thus made up of multiple trials that account for 

discrete input sets for each application, which are then averaged over the number of trials 

conducted. 

 In the sample calculation, however, DOE utilizes only one set of inputs per representative 

unit. These inputs are generated by using a shipment-weighted average across applications for 

each of the input types. Thus, the resulting inputs account for each of the applications in 

EERE-2008-BT-STD-0005 COMMENT 31
8C-14

proportion to the application’s weighting. Table 8C.4.1 through Table 8C.4.2 shows the 

shipment-weighted results for each input. The UECs for BC representative units are shown 

separately for manufacturer data and test/teardown data. 

 As explained in chapter 7, the shipment-weighted UECs for some BC representative units 

do not precisely align with the nominal UEC used to define a CSL. This is due to slight 

differences in the application-specific usage and loading profiles compared to the average usage 

and loading profile used to determine CSLs. Excluding the Test/Teardown unit for Low Energy, 

Low Voltage BCs, the difference in LCC savings as a percentage of total life-cycle cost between 

these two methodologies ranges from 0- to 1.7-percent. DOE notes this discrepancy, but finds 

that the discrepancy is within an allowable margin of error for Monte Carlo sampling. 

Furthermore, DOE notes the added benefit of being able to examine specific applications rather 

than an aggregated average when considering how many products might be impacted by a 

standard. For these reasons, DOE used the application-weighted UEC values in its BC analysis, 

and it presents these values in Table 8C.4.2. 

Table 8C.4.1 Shipment-Weighted Inputs for Class A Representative Units

Representative 

Unit

Lifetime

yrs

Markups

(Baseline // 

Incremental)

%

CSL Unit Energy 

Consumption

kWh/yr

Market 

Share

%

2.5 Watt Regular 

AC/DC

4.6 216 // 140 0 3.8 34.0

1 2.5 50.7

2 1.9 12.0

3 1.7 3.3

4 1.6 0.0

18 Watt Regular 

AC/DC

4.4 200 // 131 0 15.5 34.0

1 11.8 50.7

2 9.7 12.0

3 7.9 3.3

4 6.6 0.0

60 Watt Regular 

AC/DC

3.9 200 // 134 0 11.7 34.0

1 10.3 50.7

2 8.7 12.0

3 7.3 3.3

4 5.4 0.0

120 Watt Regular 

AC/DC

3.3 189 // 131 0 19.4 34.0

1 16.8 50.7

2 14.2 12.0

3 13.6 3.3

4 9.4 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8C-15

Table 8C.4.2 Shipment-Weighted Inputs for Battery Charger Representative Units

Representative 

Unit

Lifetime

yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Unit Energy 

Consumption 

(Test / 

Teardown)

kWh/yr

Market 

Share

%

Low Energy, 

Inductive

5.0 200 // 123 0 10.0 N/A 75.0

1 7.0 N/A 12.5

2 3.5 N/A 12.5

3 1.5 N/A 0.0

Low Energy, 

Low Voltage

3.4 213 // 140 0 10.0 N/A 39.2

1 6.0 7.4 58.0

2 1.2 1.2 2.8

3 N/A N/A 0.0

Low Energy,

High Voltage

4.2 198 // 132 0 39.4 39.4 18.7

1 10.5 10.5 43.0

2 6.1 6.1 38.3

3 N/A N/A 0.0

Medium Energy,

Low Voltage

5.5 232 // 137 0 202.3 232.7 43.4

1 158.4 179.3 16.3

2 100.0 N/A 40.3

3 75.0 N/A 0.0

High Energy 6.4 231 // 137 0 290.0 N/A 50.0

1 250.0 N/A 20.0

2 200.0 N/A 30.0

3 150.0 N/A 0.0

Low Energy,

AC Out

6.0 201 // 135 0 19.6 19.6 88.9

1 6.4 6.4 11.1

2 4.0 N/A 0.0

3 1.5 N/A 0.0

DOE also calculated the shipment-weighted inputs for scaled battery charger product 

classes. The methodology for calculating these inputs is the same as for the representative units. 

Table 8C.4.3 shows the shipment-weighted inputs for each scaled battery charger product class.

EERE-2008-BT-STD-0005 COMMENT 31
8C-16

Table 8C.4.3 Shipment-Weighted Inputs for Scaled Battery Charger Product Classes

Representative 

Unit

Lifetime

yrs

Markups

(Baseline // 

Incremental)

%

CSL

Unit Energy 

Consumption

(Manufacturer)

kWh/yr

Market 

Share

%

Low Energy, 

Medium Voltage

4.5 217 // 133 0 10.0 34.0

1 5.4 54.0

2 1.0 12.0

3 N/A 0.0

Medium Energy, 

High Voltage

8.7 228 // 136 0 69.3 50.0

1 41.9 20.0

2 25.0 30.0

3 18.0 0.0

DC-DC, <9V Input 3.4 212 // 138 0 1.5 39.2

1 0.9 58.0

2 0.6 2.8

3 N/A 0.0

DC-DC, ≥9V Input 5.1 260 // 169 0 1.3 39.2

1 0.8 58.0

2 0.5 2.8

3 N/A 0.0

EERE-2008-BT-STD-0005 COMMENT 31