Review on DigitCont USB to 12V Power Cable for Dot Devices, 4mm x 1.7mm, USB Voltage Step Up Converter, Power Supply Adapter, 4ft, DC 5V to DC 12V Cable (Black) - 2021 Edition by Wade Meeks

I ordered this to use the Echo Dot outdoors. The Revain website recommended this for Dot. I tried 4 times and each time after 20 minutes the hotspot just turned itself off and I couldn't transfer the music to my device anymore. This required a power supply of at least 2-3A and I have one rated at 5A. So I returned it and just plugged my Echo into the mains. Looking through some of the other comments, I wasn't the only person having this issue.