Replacement power supply set for and first-generation Transcend miniCPAPs. This unit is a direct replacement for the original accessory, and it can quickly and easily charge the powerful Transcend P4 or P8 batteries. It also works perfectly as an in-line power source with the P4 and P8 batteries to provide power during outages or weather events. This replacement set comes with the AC power brick and interchangeable plug adaptors so you can easily use your Transcend 3 miniCPAP internationally without additional accessories.