No NominalChargeCapacity and MaximumCapacityPercent in analytics file

I tried to check battery health in the analytics file but noticed that values like NominalChargeCapacity and MaximumCapacityPercent are at null. Does the iPad 6 just not take battery analytics, or am I missing something?

Here's the last battery section of the analytics file:

{"Count":1430,"last_value_AlgoChemID":null,"last_value_AppleRawMaxCapacity":7677,"last_value_AverageTemperature":21,"last_value_BatteryHealthMetric":null,"last_value_BatterySerialChanged":false,"last_value_ChemID":12551,"last_value_ChemicalWeightedRa":0,"last_value_CycleCount":410,"last_value_CycleCountLastQmax":1,"last_value_DailyMaxSoc":null,"last_value_DailyMinSoc":null,"last_value_Flags":256,"last_value_FlashWriteCount":2163,"last_value_GGUpdateStatus":null,"last_value_GasGaugeFirmwareVersion":789,"last_value_HighAvgCurrentLastRun":-9413,"last_value_ITMiscStatus":null,"last_value_KioskModeHighSocDays":null,"last_value_KioskModeHighSocSeconds":null,"last_value_KioskModeLastHighSocHours":null,"last_value_LastUPOTimestamp":0.0,"last_value_LifetimeUPOCount":0,"last_value_LowAvgCurrentLastRun":-90,"last_value_MaximumCapacityPercent":null,"last_value_MaximumChargeCurrent":2499,"last_value_MaximumDeltaVoltage":81,"last_value_MaximumDischargeCurrent":-3199,"last_value_MaximumFCC":9009,"last_value_MaximumOverChargedCapacity":2176,"last_value_MaximumOverDischargedCapacity":-118,"last_value_MaximumPackVoltage":4284,"last_value_MaximumQmax":9613,"last_value_MaximumRa0_8":88,"last_value_MaximumRa8":null,"last_value_MaximumTemperature":444,"last_value_MinimumDeltaVoltage":1,"last_value_MinimumFCC":5204,"last_value_MinimumPackVoltage":3457,"last_value_MinimumQmax":8173,"last_value_MinimumRa0_8":20,"last_value_MinimumRa8":null,"last_value_MinimumTemperature":59,"last_value_NCCMax":null,"last_value_NCCMin":null,"last_value_NominalChargeCapacity":null,"last_value_OriginalBattery":1,"last_value_QmaxCell0":8462,"last_value_QmaxUpdFailCount":null,"last_value_QmaxUpdSuccessCount":null,"last_value_RDISCnt":20,"last_value_RSS":null,"last_value_RaTable_1":null,"last_value_RaTable_10":null,"last_value_RaTable_11":null,"last_value_RaTable_12":null,"last_value_RaTable_13":null,"last_value_RaTable_14":null,"last_value_RaTable_15":null,"last_value_RaTable_2":null,"last_value_RaTable_3":null,"last_value_RaTable_4":null,"last_value_RaTable_5":null,"last_value_RaTable_6":null,"last_value_RaTable_7":null,"last_value_RaTable_8":null,"last_value_RaTable_9":null,"last_value_ResetCnt":null,"last_value_ResetDataComms":null,"last_value_ResetDataFirmware":null,"last_value_ResetDataHardware":null,"last_value_ResetDataSoftware":null,"last_value_ResetDataWatchDog":null,"last_value_ServiceOption":5,"last_value_TemperatureSamples":714213,"last_value_TimeAbove95Perc":11,"last_value_TotalOperatingTime":44637,"last_value_UpdateTime":1687730599,"last_value_WeekMfd":816,"last_value_WeightedRa":0,"last_value_Wom_1":null,"last_value_Wom_2":null,"last_value_batteryServiceFlags":36175875,"last_value_calibrationFlags":null,"last_value_xFlags":null},"name":"BatteryConfigValueHistogramFinal_V1","sampling":100.0,"uuid":"ff45bd11-5bf0-4e73-a9be-e71b76b00d1f_3"}