“OK, I tried using 2.5A tablet/phone chargers to power my Pi Zero2 - they worked fine with my Zero1 devices. But the Zero2s kept dropping WiFi and it took me a while to realise that maybe the 2.5A chargers weren't delivering a constant supply. Out of desperation, I bought an official Pi power supply and hey presto, the WiFi problem is no more. There's a lesson to be learned here :-)”
“Great power supply giving the correct 2.5A that the Pi needs to work. The plug isn't removable from the lead, so if you'll need a longer USB lead this isn't the power supply you want.”