What do you expect, after all it is more than just a battery pack.... this is a true UPS

Features:

2600mAh LiPO battery
Automatic battery charger
LiPO Battery Protection
Resettable Fuse on each powering input
Embedded Real Time Clock controlled via RS232 interface and I2C.
Time programmed ...

Purchased one of these for my pi

https://www.modmypi.com/pi-modules-upis-advanced

Will shut the pi down when battery below a set point and reboot it when powers returned, Would be great to get Domoticz integration

Steve