Review on π Raspberry Pi 4 UPS Plus Power Supply: Uninterrupted Backup Battery HAT for Raspberry Pi 4B 3B+ 3B by Polo Bradley
Obsolete version of this product
This board has a design issue. The chip that reads and reports the output voltage only reads the output of the boost converter, so it's always 5 volts until the battery dies. This means it doesn't act as a UPS as you can never know how much time is left in the battery. It's a 52pi EP-0118, there's a newer EP-0136 board that fixes this.
- Very good price
- I will add later
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