MakerHawk Raspberry Pi UPS Power Supply Uninterruptible UPS HAT 18 650 Battery Charger Power Bank Power Management Expansion Board 5V for Raspberry Pi 4 Model B / 3B + / 3B (Not include battery)

The mounting hardware is finicky; using tiny little nuts for the Pi side is very annoying and they are hard to get on without small tweezers and a lot of patience. Seriously using MicroUSB input in 202X is a dealbreaker; not to mention one with some ungodly insert with a PM chip in the middle required, thus needing two micro cables and a 3A USB A power supply (seriously, couldn't have even put USB-C on here?). I expected to be able to supply power through the inclued USB-C port, given that USB-PD is bidirectional, but this does not work, and thus this is clearly not USB-PD (even just 5V PD). This has already ruled this out as a viable option for me as I run my Pi very "hot" under a lot of load and there's no way a single MicroUSB or USB A charger will provide enough power (if you know of a 3+A-per-port A, I'd love to know). For $15 less I can get the PiPower which takes USB-C in (able to reuse the existing Pi4 charger I have) and even includes batteries (something to also factor in to this units already-higher price).

That product illustration where they connected USB-C on the battery controller to USB-A port on Raspberry seemed weird to me until I figured out why they did so. Raspberry PI 4 complaints about low voltage unless you do as instructed. RTFM, indeed. I've got two of these devices and will not hesitate to recommend them.

I put this into service for my 2GB RPi4 running Home Assistant in March 2021. Since then it's been rock solid, weathering multiple power outages and device relocations. Moving to an 8GB RPi4 now that they're in stock (thanks jeffgeerling dot com from rpilocator dot com), but also picked up a RPi5 and tested it first. Worked perfectly, just like on the 4. What it does well: * Gives you a UPS on your Pi. Easy to connect, needs M2.5 screws/standoffs. * Keeps pi running whether power is connected or not. Seems to last a long time, did not test. * Gives you an easy power button. What it could use: * A way to monitor usage through the Pi OS / Linux. * A mounting plate with the pressure springs or a wire, the POGO pins are awesome but no case. * A case for it w/the Pi. I really like the Orange Pi all metal cases. * It could be cheaper. I'd buy 10 of these if they were < $15.

Funciona bien, lo compre para un raspberry y dura tres horas, suficiente autonomía

Works for a day or two than it turns off. After disconnecting power and holding the button for a few seconds it will show the battery is low. Then if you connect the power and push the button it will start again and run for a day or two again. Not reliable at all.