Is anyone aware of a usb LTE modem dongle that has a battery inside?

I'm wondering if there might be an obscure one that has a battery so once mode switched it retains the same MAC address if the pc switches off?

sorry, just realized I posted in the wrong forum sub section

Hi, I'm no linux pro, so go easy on me if I'm asking stupid questions I have an alcatel lte dongle, I have been using it for months when I first started using it I had to run the following commands every time in order to get it to modewitch sudo modprobe usbserial vendor=0x1bbb product=0x0195 sudo ...