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ManualsBrandsACCULUX ManualsWorkshop & HandlampsBlack-blue

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Fraunhofer‐GesellschaftzurFörderungderangewandtenForschunge.V.,München

Vorstand

Prof.Dr.‐Ing.habil.Prof.e.h.mult.Dr.h.c.mult.Hans‐JörgBullinger,Präsident

Prof.Dr.rer.nat.UlrichBuller

Prof.(Univ.Stellenbosch)Dr.rer.pol.AlfredGossner

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BankverbindungDeutscheBank,München

Konto752193300BLZ70070010

IBANDE86

700700100752193300

BIC(SWIFT‐Code)DEUTDEMM

USt‐IdNr.DE129515865

Steuernummer143/215/20392

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TestReportofSwivel‐HeadLampAccuLuxHL20

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Electrical,opticalandmechanicaltestsonHL20accumulatorlightsofWitteundSutorhavebeen

performedinJune2011atFraunhoferIZM.Severalcompletelampsincludingchargerswere

investigated.AdditionalLithiumsecondarybatterieswhichareusedinthelampsweretested

separately.Thetestswerecarriedoutata

56‐channelbatterytesterMaccorseries4000andan

opticaltestbedwithLuxmeterLX‐1108.

Thefollowingresultshavebeenobtained:

1.Thelampsarefullyfunctional.Alltechnicalspecificationsandsub‐functionshavebeenfulfilled.

2.Thelightingfluxwasobtainedbasedontheangleofradiationandmeasuring

theilluminanceat

differentdistances.Theresultingfluxvaluewas190Lumen.Undercontinuousoperationofthe

mainlampthelightfluxdoesnotdropmorethan10%forthetotalusetime.Basedonthemost

advancedpowerLEDtechnologythelampsfeatureanoutstandingbrightness.

3.Secondary

batteries:Highqualitylithiumionbatterieswithsafetycircuitareused.Duringfull

charge‐dischargecyclesthecapacitydropsonly0.052%percycle.After500cycles70%ofthe

nominalcapacityremains.Lowweightandlowselfdischargeratesarefurtheradvantagesofthe

lithiumbatteries.

4.Charging:Aconstantcurrent

constantvoltagechargingregimeisusedtoachievelongbatterylife‐

time.Thechargingtimeiswithinspecifications.Chargingcanbecarriedoutat230VoltsACaswell

as12and24VoltsDC.Iftheinputvoltagefallsbelowthe12or24Voltthresholdvalues,the

charging

stops.

5.Discharging:Fuelgaugingisperformedathighaccuracy.TheLCDcapacityindicatorfeaturesfour

segmentswhichindicate5%,35%and70%ofdischargetime.Theautomaticswitchingtopilot‐

LEDandlow‐voltage‐disconnectperformsreliably.

FraunhoferIZMDr.RobertHahn,Gustav‐Meyer‐Allee25

13355Berlin

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Firma

Witte+SutorGmbH

SteinbergerStrasse6

D–71540Murrhardt

Deutschland

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Berlin,20.Juli2011

Fraunhofer‐InstitutfürZuverlässigkeit

undMikrointegrationIZM

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Institutsleiter

Prof.Dr.‐Ing.Dr.sc.techn.K.‐D.Lang

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Gustav‐Meyer‐Allee25

13355Berlin

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Dr.RobertHahn

GruppenleiterMikroenergie

HDI‐WLP

Telefon+493031472833

Fax+493031472835

robert.hahn@izm.fraunhofer.de

www.izm.fraunhofer.de

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Summary of content (2 pages)

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Fraunhofer‐Institut für Zuverlässigkeit und Mikrointegration IZM Fraunhofer IZM Dr. Robert Hahn, Gustav‐Meyer‐Allee 25 | 13355 Berlin Firma Witte + Sutor GmbH Steinberger Strasse 6 D – 71540 Murrhardt Deutschland Institutsleiter Prof. Dr.‐Ing. Dr. sc. techn. K.‐D. Lang Gustav‐Meyer‐Allee 25 13355 Berlin Dr. Robert Hahn Gruppenleiter Mikroenergie HDI‐WLP Telefon + 49 30 31472833 Fax + 49 30 31472835 robert.hahn@izm.fraunhofer.de www.izm.fraunhofer.de Berlin, 20.
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Berlin, 20. Juli 2011 A lighting time of 5,25 hours was achieved when the battery was discharged continuously with the main power LED. 6. For evaluating the mechanical robustness a drop‐test was performed. For these tests the lamps fall down from a height of 1.5 meters on concrete in such a way that each of the six sides one after the other hit the ground. All lamps passed. Only some scratches occurred on the plastic housing. 7. Test and evaluation of the lamps exhibited a mature technology.