Breas PowerShell with Extended Life Battery Module for Z1 & Z2 Series CPAP MachinesBreas PowerShell with Extended Life Battery Module for Z1 & Z2 Series CPAP Machines: Description Add the PowerShell equipped with the Extended Life Pack on your Z1 or Z2 Series CPAP Machine to get away from fixed power. The PowerShell offers a unique integrated solution that combines the battery and machine in one compact package. It's compact enough to fit into hands that are small enough to fit in. However, it is powerful enough to provide you with