I used one of these for about a year on my PiHole, but switched to a standard UPS because the hat's LiPo started bulging from all the heat generated by the Pi's

I used one of these for about a year on my PiHole, but switched to a standard UPS because the hat's LiPo started bulging from all the heat generated by the Pi's processor. The hat is a great idea in principle, but because the battery is sitting right on top of the processor, it doesn't stand a chance given that lithium batteries are fairly temperature sensitive. I'd go with another option.