It doesn't return the full serial number, but does get enough digits to match against the recall listing that Dell have published. I have tried it on known good and bad batteries that I have and it works fine for me. As an extra, here is a list of the objects and some example outputs from the WMI PortableBattery class. The Name object has the 5 digits that need to be matched, else you could just match the manufacturer against Sony and then escalate up your support process as required. PS this was a good battery! Availability: BatteryStatus: CapacityMultiplier: 10 Caption: Portable Battery Chemistry: 2 ConfigManagerErrorCode: ConfigManagerUserConfig: CreationClassName: Win32_PortableBattery Description: Portable Battery DesignCapacity: 52170 DesignVoltage: 11100 DeviceID: Portable Battery 0 ErrorCleared: ErrorDescription: EstimatedChargeRemaining: EstimatedRunTime: ExpectedLife: FullChargeCapacity: LastErrorCode: Location: Sys. Battery Bay ManufactureDate: Manufacturer: Panasonic MaxBatteryError: 2 MaxRechargeTime: Name: DELL 4M010 4 PNPDeviceID: PowerManagementCapabilities: PowerManagementSupported: SmartBatteryVersion: 1.0 Status: StatusInfo: SystemCreationClassName: Win32_ComputerSystem SystemName: PC2141 TimeOnBattery: TimeToFullCharge:
