battery test fp1

7/24/2019 Battery Test FP1

1/12

7 layers AG Aufsichtsratsvorsitzender

Registergericht

registered in:Borsigstrasse 11 Chairman of the Supervisory Board: Dsseldorf, HRB 4409640880 Ratingen, Germany Ralf Mertens USt-IdNrVAT No.:

Phone: +49 (0) 2102 749 0 VorstandBoard: DE 203159652Fax: +49 (0) 2102 749 350 Dr. H.-J. Meckelburg TAX No. 147/5869/0385

www.7Layers.com

Test Report on

FP1by Fairphone

According to

GCF Performance Criteria Version 3.52.1

Covering Battery Lifetime

Report Reference: MDE_FairP_1401_BAT_01

Date: 07.02.2014

Test Laboratory:

7 layers AG

Borsigstr. 11

40880 Ratingen

Germany

Note:

The following test results relate only to the device specified in this document. This report

shall not be reproduced in parts without the written approval of test laboratory
http://www.7layers.com/http://www.7layers.com/


2/12

MDE_FairP_1401_BAT_01

Page 2 of 12

Table of Contents1.1 Testing Laboratory 3

1.2 Project Data 3

1.3 Customer Data 3

1.4 Manufacturer Data 3

1.5 Signatures 4

2 OBJECT UNDER TEST 4

2.1

General OUT Description 4

2.2 Tested Modes 4

3 REFERENCES 4

4 TEST RESULTS 5

4.1 Battery Capacity 5

4.2 Current Consumption and Battery Lifetime 6

5 TEST METHODS 7

5.1 Battery Capacity 7

5.2 Current Consumption and Battery Lifetime 7

6 TEST EQUIPMENT 7

6.1 Equipment List 7

6.2 Facility Description 8

7 MEASUREMENT UNCERTAINTY 10

8 PICTURES AND SCREENSHOOTS 10


3/12


Page 3 of 12

ADMINISTRATIVE DATA

1.1 Testing Laboratory

Company Name: 7 layers AG

Address Borsigstr. 11

40880 Ratingen

Germany

1.2 Project Data

Responsible for testing and report: Robert Machulec

Receipt of OUT: 23.01.2014

Date of Test(s): 23.01.2014 -07.02.2014

Date of Report: 07.02.2014

1.3

Customer Data

Company Name: Fairphone B.V.

Address: Piet Heinkade 181a

Amsterdam, 1019 HC

Netherlands

Manufacturer Data

Company Name: Fairphone B.V.

Address: Piet Heinkade 181a

Amsterdam, 1019 HC

Netherlands


4/12


5/12


Page 5 of 12

3 References

[1] Global Certification Forum (GCF) Performance Criteria, GCF-PC version3.52.1.

[2] GSM Association (GSMA) TS.09: Battery Life Measurement and Current

Consumption Technique, Version 7.6, 13 June 2013.

4 Test Results

4.1 Battery Capacity

Fig. 1.: Measured battery capacity of two samples of the batteryF1B101 with a nominal

capacity of2000 mAh.


6/12


Page 6 of 12

4.2

Current Consumption and Battery Lifetime

Tab. 1.: Measured current consumption and calculated battery life time data

according to GCF.


7/12


Page 7 of 12

5 Test Methods

The applied performance measurements method is according to the GCF test specification

as described in[1].This test specification is a subset of and follows the principles as

outlined in a GSMA specificationTS.09. For the most recent version of the TS.09 see[2].

According to GCF the DUT original battery is used as power supply and the current

consumption becomes measured while the phone is operated in different modes.

5.1

Battery Capacity

First the end of life voltage (EOLV) of the phone is measured by means of an external powersupply and by measuring the voltage at which the phone drops an active call. Measuring the

battery capacity Cis done by measuring the voltage Uover time tat a shunt resistor R

connected to the battery as described in chapter 20 of[2].The measurement last till a

complete discharge of the battery. The battery capacity is than calculated by means of

integrating the drain current between start of the measurement (with a fully charged

battery) till the moment where the end of life voltage is reached:

dtR

tUC

EOLVUt

)(

0

)( (1)

5.2 Current Consumption and Battery Lifetime

For estimation of the to be expected battery life time t, the measured and over time

averaged current Imeasured is used together with the measured battery capacity C as

described in chapter 19 of[2] is used:

measured

nominal

I

Ct . (2)

6 Test Equipment

6.1 Equipment List

Ampere meter: NGMO2 by R&S SN 958434/179

Volt meter: EX520 by Extech SN 06110406

Basestation simulator: CMU 200 by Rohde & Schwarz SN 102366

Basestation simulator: CMW500 by Rohde & Schwarz SN 107500

The Basestation simulator CMW500 was used for Browsing and streaming test cases. Else

the CMU200 was used.


8/12


Page 8 of 12

6.2

Facility Description

The GCF battery life time measurement set up is located at 7 layers in Ratingen, Germany.

The test facility comprises the as key elements a shielded test system ST-75 (by 7 layers)

and a special ampere meter. The complete set up is shown inFig. 2 andFig. 4.

Fig. 2.: Sketch of the battery life test set up used at 7 layers.

6.2.1 Shielded Test System STS-75

In order to be able to create reproducible and a well defined RF environment according to

the GSMA specification[2] a shielded test environment is recommended. At 7 layers an

STS-75 is being used specifically designed for such kind of tests. The key is a shielded box

basically being a cube with 75 cm in size and featuring long absorbers optimized for

frequencies higher than 700 MHz. Additionally the system is equipped with a antenna

system comprising three separate multi band antennas and a combiner for creating a very

reliable and stable contact between the antenna system with the RF port of a base station

simulator.


9/12


Page 9 of 12

Fig. 3.: Photo of a STS-75 including a combiner and a base station.

6.2.2 Fast Ampere-Meter

Another key element is an ampere meter capable of measuring currents as fast as with atleast 50 kilo samples per second as required by GCF and GSMA. The NGMO2 by Rohde andSchwarz is able to do so and designed exactly for such kind of measurements. Actuallysampling occurs internally every 10 s (100 ksps).

6.2.3 Measurement and Control Software

All measurements of the fast changing current and an appropriate averaging over time are

performed automatically by a software which has been created by Vodafone for this

particular purpose: VF-BAT-Life KPI v3.1.4. The software is a windows application that

provides all necessary control of the base station settings and parameters of the NGMO2.


10/12


Page 10 of 12

7 Measurement Uncertainty

Combined uncertainties are

for the battery capacity: 9% and for the

for the battery lifetime: 7.5%.

Note: Not included is the uncertainty resulting in testing with different battery voltages

resulting in different currents. The test specification requires testing always with a fully

charged battery[2].

8 Pictures and Screenshoots

Fig. 4.: Photo of the general test set up.


11/12


Page 11 of 12

Fig. 5.: Foto of the set up within the STS.

Fig. 6.: Foto of the contact between battery and device.


12/12


Page 12 of 12

Fig. 7.: Screen shoot example: Measurement of the current in GSM 900 talk mode.

Fig. 8.: Screen shoot example: Measurement of the current in GSM900 idle mode.

battery test fp1

Documents