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10.RULES FOR THECAREOFTHELITHIUM-ION BATTERIES
Thefollowingrulesshouldbenotedwhencaringforyourlithium-ionbatteriesifyouwant
tomaintaintheperformanceoftheenergystoreforaslongaspossible:
·Thefirstchargeiscrucial.Fullychargethebatterybeforeusingitforthefirsttime.
·Eachbatteryonlyhasalimitednumberofchargecycles.Don'tthereforerechargethe
batteryateveryopportunity.Insteaduseituntilitisalmostflat(10...20%ofcharge).
Dependingonloading,thehigh-quality,3Ah capacitybatterycells canbecharged
upto2,000times.Assuming250daysareworkedayearandthatthebatteriesare
chargeddaily,this corresponds toabatterylifeof8years.
·IIfthebatteryisdischargedbelowitsnominalvoltage,thiscantriggerprocesses
whichdamageordestroythebattery.Thebatteriesarethereforefittedwithelectronics
which warn theuserandshutdown thedevicebeforetotaldischargecan takeplace.
·Frequentoverchargingcanalsopermanentlydamagethebattery.Thechargertherefore
automaticallyfinishes thechargingprocess as soonasthebatteryis fullycharged.Do
notattempttoforcemorechargeintothebatteriesbyunpluggingandreconnecting
thecharger.Suchactionwill notproduceahighercharge-itwillonlydamagethe
batteries.
·Chargingshouldgenerallyonlybeundertakenatroomtemperature(around18-21
degrees).Avoidchargingacoldbatteryasitdamagesthecells.Alwayswarmthe
batteryuptoroom temperaturebeforecharging,especiallywhen itiscoldoutdoors
inwinter.
·Hightemperaturesalsodamagethebattery.Neverleavethebattery,andpreferably
nottheentiretoolbox,inthecarordirectsunlightonhot sunnydays.Attemperatures
above60 degreesCelsius,theLi-ionbatterypermanentlylosescapacity.
·Lithium-ionbatteriesshouldn'tbestoredflatorfullychargedforlongperiods.Extensive
testinghasfoundacapacityof40...50 %andlowtemperatures (butnotbelow0°C)
tobeoptimum forstorage.Ideallytheyshouldbekeptat5°Cto10°C.Rechargingis
neededatleast every12monthsas thebatteries willself-discharge.
·Abatterywhichisnot beingusedshouldbestoredinacoolbutnotcoldplace.Even
whennot beingused,batteriesloseenergy.TheLi-ionbatteryloses3...5%ofits
chargeamonth.
·Ifalithium-ion batteryisnotusedforalongperiod,itshouldberechargedafter12
months atthelatestotherwiseitwillbeirreparablydamaged.
·Old,usedbatteriesmustofcoursebedisposedofinanenvironmentallyfriendly
manner.