Hello, you have experience with this module ?
https://wiki.52pi.com/index.php/UPS_(With_RTC_%26_Coulometer)_For_Raspberry_Pi_SKU:_EP-0118
I also use it with the small repair module that was in the package. Everything works as it should until it really works through the battery. As soon as it goes to sleep on the power supply, the module discharges itself and does not have time to charge. I have to turn off the raspberry to let it charge and only then does it work again.
Are you using something better or does this module work better for you?