Lenovo ThinkServer RD240 - Page 73

Notes:
a.ThebatterycardassemblyprotectstheintegrityofthecacheddataontheRAIDcontrollerby
providingbackuppowerupto72hoursinthecaseofacompleteacpowerfailureorabriefpower
outage.Ithasbuilt-infunctionalitytochargethebatterypackautomaticallyandtocommunicate
batterystatusinformationsuchasvoltage,temperature,andcurrenttoyourserver.Italsoprovides
aninexpensivealternativetousinganuninterruptiblepowersupply,andasecondleveloffault
tolerancewhenusedinconjunctionwithanuninterruptiblepowersupply.Formoreinformationabout
thebatterycardassembly,seeAppendixA“RAIDbatterycardassembly”onpage131
.
b.Thebatterycardassemblyoptionkitcontainsauserguide,thebatterycardassembly,andthree
Phillips-headscrews.Donotremovethebatterycardassemblyfromtheantistaticshipping
containeruntilyouarereadytoinstallit.Whenyouremovethebatterycardassemblyfromyour
server,placeitinitsoriginalcontainer.
c.ChecktheappropriatesupportWebsitesforthelatestupdatesforyourbasicinput/outputsystem
(BIOS)code,utilityprograms,devicedrivers,andothersoftwareapplications.Followtheinstructions
providedbyyourServiceProvidertodownloadandinstallupdates.
d.Itisrecommendedthatyoureplacethebatterypackonthebatterycardassemblyannuallyorafter
500rechargingcycles,whichevercomesrst.
e.Thetemperatureofthebatterycardassemblyisgenerally15–20degreeshigherthantheambient
temperatureduringfastcharge.Therefore,tocompletefastchargecycle,theambienttemperature
shouldbelessthan45degrees.Iftheambienttemperatureexceeds45degrees,thefastcharge
cyclewillterminateprematurely,thuspreventingthebatterycardassemblyfromreachingafully
chargedstate.
Attention:
•WhenattachingthebatterycardassemblytoaPCIExpressslot,centerthePhillips-headscrew
drivertoavoiddamagingthescrewheadanddonotover-tightenthescrewsasyoumightdamage
thebatterycardassembly.
•Thebatteryinthebatterycardassemblymustrechargeforatleastsixhoursduringfastcharge
undernormaloperatingconditions.
Chapter7.Installing,removing,orreplacinghardware61