waveshareUninterruptible Power Supply (UPS) Module, Supports Charging and Power Output at The Same Time, 3S & 5V 5A Output, Compatible with Raspberry Pi Board

This works great. I've been using it now for a couple of weeks. And the features are awesome. Not only does it provide on board 5V, but you can get access to the battery voltage. This can be run through ha separate buck, to get any other voltages needed. Have connected and disconnected multiple times, and power is consistent. I am using 18650 cells w/o the button top. fit of the cells is great. Have also used the onboard current monitor and integrated that into my project, with no issues. Highly recommend this product.

I bought two of these and they both struggle to power on my pi 4 and 5. Also there's no instructions or manual that comes with it.

Great product. Comes with sample codes on their wiki page. Delivers power like you'd expect. Buy it

The idea of this uninterruptible power supply is great, the execution is pretty good, but not 5 star.Product lacks documentation; no instructions provided, not even a little card that says "here's the link to read the instructions from the web". Nothing. Manufacturer website has some images to figure out what you're doing, but no instructions.CAUTION if you're a beginner.Does NOT include I2C or Multi-function Header connection wires.Plastic standoffs (YES plastic, they aren't even brass as is the industry standard) are not plumb, and had some bend, this makes screw alignment a bit of challenge.I wish the acrylic spacers provided were clear, and not smoked/black, which would makes seeing the operating lights difficult to see.The plus is that the acrylic spacers provided are easy to drill, so mounting under a Pi5, and under a nvme bottom, wasn't too much of a stretch.

Works great - button top batteries are harder to get installed than normal 18650 batteries but after running for a week, I am pretty happy with it. Would be nice if instructions were included in the box but the pictures are on the website so that kind of helps.

Super easy to set up. Just look at the pictures and don’t over think it like I do.

Advertised for the Raspberry pi 5 for providing 5V/5A. However does not provide 5A. After Pi 5 turns on with no perhiperals attached, still gives a power warning that 5A is not delivered and peripherals will be limited. Also, the pictures shown to use the header pins to the GPIO for more detailed battery details. However no header pins are provided.

The board will not take protected 18650 batteries. They are longer than unprotected batteries.