CR2450电池（卖方）

CR2450 BatteryDatesheet as below: ITEM UNIT SPECIFICATIONS CONDITIONS Nominalvoltage V 3.0 Standarddischarge Nominalcapacity mAh 540 Standarddischarge Instantaneousshort-circuitcurrent mA ≥350 Time≤0.5second Off-loadvoltage V ≥3.20 Unitcell Storagetemperature °C 0-35 Standardweight g 6.5 Unitcell Service output Initial h 496 Continuousdischargewithload3kΩ,till2.0vend-voltageat20-25°C After12monthsstorage h 486 ITEM CONDITIONS CHARACTERISTICS Self-discharge rate Storedfor12monthsatnormaltemperature, thencontinuouslydischargedwith15kΩloadtill2.0vend-voltage Lessthan≤2% ITEM TESTMETHODS STANDARED Dimensions Usingverniercaliper(accuracy≥0.02)whileavoidingshort-circuit Diameter 24.5(-0.15) mm Height 5.00(-0.20) mm Off-load voltage Usingmultimeter(accuracy≥0.25%)internalresistance≥1MΩ ≥3.20V Instantaneous Short-circuit current Timeofshort-circuitshouldbelessthan0.5 Secondandavoidrepeatedtestwithinhalf Anhour ≥350mA Appearance Eyeballing Bright,clean,norust,noleakage, andnoflaw Capacity Continuouslydischargefor8hourwithload 3kΩ,temperatureat20-25°C,humidityat65 ±20%till2.0vend-voltage(forfreshbattery only:within3months) ≥478h Vibrationtest Putbatteryontheplatformofthevibrations Machine,startthemachineandadjustthe Frequencyform10timesperminuteto15 Timesperminute.keepitrunningforanhour Characteristicskeepstability Leakageat high temperature Storedundertemperature(45°C)for30days Leakagerate≤0.5% Over Discharge Test After2.0vend-voltage,continuouslydischargedfor5hours Noleakageallowed