🌀 Enhanced Cooling Fan Expansion Board for Geekworm X728 and Raspberry Pi 4 Model B/ 3B+/ 3B/ 2B Review

Make sure you can get to the batteries, it likes to stall and won't turn off. You have to pull out both batteries to reset it. It would be ideal if the firmware wasn't so buggy and the software was more sophisticated.

Overall I am very happy with this product and would recommend it to anyone looking for a reliable UPS; plus it's a HAT. It has powered everything I have used to date and have not encountered any issues. :) IMPORTANT: Make sure you use the correct lithium ion batteries 1865 Flat top and (short). I am currently using: https://www.amazon.com/dp/B0869K7W4Z?psc=1&ref=ppx_yo2_dt_b_product_details

I bought this for my RPI to power it during power outages and it works very well. I tested it and it lasted over 24 hours on six 18650 batteries. I've had random reboot issues recently and the support team has been very responsive and helpful! As mentioned, I wish the LEDs could be dimmed with software or switches, but I have a pack of Light Dims that work fine.

The Geekworm PI Cooling Board (X728-A1) reduced the non-overclocked PI 4 stress test temperature by 25* degrees Celsius in the region of 81* Fahrenheit! It went from an operating temperature of 75°C to 50°C. It also dropped its idle temperature from 47°F to 38°F! After completing the stress test, the temperature returned to 38C very quickly, using the cheap thermal synchronizers installed with my CanaKit. Very impressive.

Works great, just raspberry pi setup issues on software page for non-raspbian OS images. I had to buy another fan as GeekWorm doesn't supply a fan for the Pi 3B to match this one < see below. GeekPi Pi4/3B Fan>. Glad to see there are big red warnings on the wiki to watch LG's security video. I will make sure my 18650 batteries stay safe. Please do not recommend buying the Revain 18650 batteries that come with the charger as they are mostly unsafe and cheap. I don't want to blow up the Pi.