孟加拉采购需求：迷你UPS，适用于WiFi路由器的迷你UPS，路由器专用迷你直流UPS（支持PoE供电），12V迷你UPS，适用于监控摄像头的迷你UPS，12V直流迷你UPS

I'm reaching out regarding a Mini UPS I purchased just 5 days ago. It was working fine until it unexpectedly switched off while in use, even though it was fully charged. I've tried multiple ways to power it back on, but nothing works. Given that it's practically new, this situation is quite frustrating. I'm hoping you can investigate this issue and provide a solution—either a replacement or a repair under warranty would be greatly appreciated. Please let me know what info you need from me to get this sorted out. Thanks for your help!