1.Preface:ThepurposeofthisproductspecificationistoprovidetechnicalinformationfortherechargeableLithium-ionbuttonbatteryLIR2450,manufacturedandsuppliedbyShenzhenLideaBatteryCo.,Ltd.2.DescriptionandModel2.1DescriptionRechargeableLithium-ionbuttonbattery2.2ModelLIR24503.Specification3.1Capacity120&plu***n;10mAh3.2ChargingVoltage4.20V3.3NominalVoltage2.75Vat0.2CmA3.4StandardChargingMethodC***tantcurrent:24mAc***tantvoltage4.20V3.5Cut-offDischargeVoltage2.75V3.6Max.DischargeCurrent120mA3.7argeCurrent120mA3.8CycleLife>500cyclesat0.2CmAdischarge3.9AmbientTemperatureforStandardCharge0℃~45℃forDischarge-20℃~60℃3.10Storageforwithinthetemperature-20℃~60℃forwithinthehumidity≤75%3.11EnergyDensityWh/LWh/Kg3.12WeightofBareCell~5.6g3.13ChargeStateInternalImpedance≤400mΩ4.AppearanceAppearanceshallbefreefromanyremarkablescratch,flaws,rust,discolorationorelectrolyteleakage(visibleorby***ell).5.StandardTestcondition5.1EnvironmentConditi***:Unlessotherwisespecified,allteststatedinthisProductSpecificationareconductedwithinthetemperature15~25℃andthehumidity45~85%RH.5.2TestEquipment:Impedancemeter:TheimpedancemeterwithAC1kHzshouldbeused.6.TestProcedureandItsStandardItemMeasuringProcedureStandard6.1AppearanceVisualNoDefectandLeak6.2DimensionCaliperAsitem86.3WeightScaleAsitem3.126.4MaximumChargeCurrentCCCV(C***tantCurrentC***tantVoltage)120mA6.5FullchargeCC/CVChargeitwith0.2CmAc***tantcurrenttill4.2V(Max),thenchargeitwithc***tantvoltage4.2Vuntilthechargingcurrentdropsto0.01C.6.6OpenCircuitVoltageWithin1hrafterfullcharge,measureOpencircuitvoltage>4.15V6.7InternalImpedanceMeasurethebatterywith1kHzAC≤400mΩ6.8DischargeCapacityWithin1hrafterfullcharge,dischargeuntilfinaldischarge,at0.2CmAandmeasurethecapacity>120mAh6.9MaximumDischargeCurrentUntilfinaldischargevoltage120mA6.10Charge/DischargeCycleLifeDischarge:0.2CmAto3.00V,Thischarge/dischargeshallberepeated500timesCharge:CCCV,CC-0.2CmA,CV-4.2VuntiltheCCisbelow0.8mA.Dischargecapacityshouldbe>70%ofitem6.86.11LeakageProofAfterfullcharging,thebatteryshallbestoredat40&plu***n;2℃andhumidity80&plu***n;5%for21days.Noleakageshouldbeobservedbyvisualinspection6.12TemperatureCharacteristicsAfterfullchargeat20&plu***n;5℃,standat-20&plu***n;2℃for18hrs,thendischargeat0.2CmAandmeasurethecapacity.Afterfullchargeat20&plu***n;5℃,standat55&plu***n;2℃for2hrs,thendischargeat1CmAandmeasurethecapacity.Dischargecapacityshouldbe>60%ofitem6.8andnoabnormalityonitsappearanceandstructure6.13ChargeRetentionAfterfullcharging,standat20&plu***n;5℃dischargecapacityfor28days,measurethedischargeshouldbe>85%ofitemcapacityaccordingtoitem6.8.)