I've had no issues at all with the RPi zero 2W running off the battery mentioned. I am also powering a small USB extender to allow 3 devices to be connected to the single Pi port. I recall some folks measuring actual current consumption being less than 1 amp on the Pi-zero, too. The uBitX that I am also powering from that battery draws something less than 3 amps on 12v. I have run both the Pi-zero 2 and the rig for hours off the battery, and for literally days leaving the wall-wart charger connected to the battery.
=Vic=
Vic WA4THR