Waveshare UPS HAT for Raspberry Pi 4B, 5V Uninterruptible Power Supply Charge and Power Output at The Same Time

I've messed with, fiddled, built and tried multiple solutions of battery backup for a pi. All flawed in some way. This one functions. No reboots when reconnecting power. Nothing underpowered or getting hot. I've not done extensive testing on its ability to keep batteries balanced (2s). I2c and some SMBUS python gets you some info about real-time power, -+amps and TOTAL voltage and % SOC. ... So yeah a little spendy, but I immediately purchased another.You'll have to power your pi off 8.4v now. I think 12v is probably also fine. Other than that, nothing to complain about. My pi is also powering a small 7inch display, which has not been an issue yet. I've enjoyed the three waveshare items I've purchased. They always seem thoughtful, and have key information to get things going.Oh! One gripe. I didn't like the brass standoffs. They did work, but were a odd, small and more delicate size. Different than the standoffs that came with my displays.

No issues with this product.

Had absolutely no problems with the power supply until I actually needed it to perform. Had a storm that had the electric kicking off and on and the next day I couldn't get anything through the hat. If I flip the batteries, the warning lights kick on, but plugged in or just on battery and no current comes through.Looking to return immediately

Works great for my robot. I can get about 45 minutes to an hour of use out of each charge. The switch from wall to battery power works perfectly and keeps the pi powered. It charges the batteries properly. Being able to get battery data with code is also tight

great for my pi project