How to calculate the time of operation of the central panel from an external battery?
Divide the capacity of the external battery by the power consumption of the central panel.
Power consumption of the central panel depends mostly on active communication modules — the average values are indicated in the table:
| Central panel | Active communication modules | Average input current |
| Hub | GSM | 42 mA |
| Ethernet | 80 mA | |
| GSM+Ethernet | 90 mA | |
| Hub Plus | GSM | 35 mA |
| Ethernet | 72 mA | |
| GSM+Ethernet | 93 mA | |
| Wi-Fi | 20 mA | |
| Wi-Fi+GSM | 42 mA | |
| Wi-Fi+Ethernet | 80 mA | |
| Wi-Fi+GSM+Ethernet | 96 mA | |
| Hub 2 | GSM | 33 mA |
| Ethernet | 80 mA | |
| GSM+Ethernet | 86 mA | |
| ReX | — | 20 mA |
For instance, when connected to a 40A·h battery, Hub 2 — with active GSM module only — will operate approximately 1200 hours, which is 50 days (40A·h / 0.033A).