322217/G
83
•Externalre:Internalpressureandthermalrunawaymaybetheconsequencesifthe
cellsinsidethebatteryareexposedtotemperaturesabove85°C.
•Internalshortcircuit:Internalshortcircuitinacell.Destructionoftheseparatorcan
causeashortcircuitbetweentheanodeandcathode.Thermalrunawayandreis
possible.
•Wateringress:Internalpressure,thermalrunwayandchemicalreactionsmaybe
theconsequence.
Thetransponderisttedwithapressurereliefvalveatthebottomoftheunit.The
reliefvalvepreventsoverpressure.Noxiousgasesandingredientswillthenleakoutof
thetransponderuntilthechemicalreactionshavestopped.Productsgeneratedbythe
chemicalreactionsduringanemergencymayhoweverclogthispressurereleasevalve.
SECTION3:Composition
Thebatteryisasolid,manufacturedarticle.
Alithiumbatterypackconsistsofseveralindividualcellsthatareelectricalconnected,
bothinseriesandparallel.
Thebatterypackshavedifferentnumberofcellsandpowercapacity.Alltransponder
batteriesincludeprotectionagainstshortcircuits(circuitbreakers)andreversecurrent
(diodes).
Thelithiummetalcellshavethefollowingchemicalformula:
Lithiumthionylchloride—Li/SOCl
2
•Negativeelectrode:Lithium
•Positiveelectrode:Carbon
•Electrolyte:Asolutionoflithiumtetrachloroaluminate(LiAlCl
4
)inthionylchloride
Batteryidentication:
cNODEMaxi
•Batteryname:L14.4(48)Maxi
•Partnumber:319554
•Batteryweight:6.5kg
•Lithiumweight:183g
cNODEMidi
•Batteryname:L14.4(24)Midi
•Partnumber:347563
•Batteryweight:3.0kg
•Lithiumweight:92g
Batterysafety