Keep internet, home automation and networking online to ensure a graceful start-up & initiation of IoT devices after power failures.
Backup Power for more than 2.5 hours.
Device List:
| Function | Device | Model | Volt | Rating | Wh |
| Internet Router | Ubiquity EdgeRouterX (5P) | ER-X | 12V | 0.5A | 6 |
| ISP Router | Huawei EchoLife | G8240H | 12V | 1.0A | 12 |
| HA Platform | Intel NUC | DCCP847DYE | 19V | 0.42A | 64.98 |
| 8 Port Switch | Netgear ProSAFE | GS110TP | 48V | 1.25A | 60 |
| Access Point | Ubiquiti | UAP-AC-Pro | 48V | N/A | 9 |
Total Wh = (6+12+64.98+60+9) = 151.98
- Internal & ISP router connected to 12V port.
- NUC device connected on passive 24V PoE port, voltage reduce to 19V and changed to normal 12V connection.
- Above mentioned is a non-standard configuration with a device which we are developing.
- 8 Port switch connected to 48V port.
- 1 Port on the switch is powering the PoE AP.
- 5 Ports on the switch are being utilized without PoE.
Theoretical backup time for Power Buddie DC UPS 75Wh = 29.6 minutes
This is calculated (UPS Wh (75) \ Total device Wh (151.98) * 60 minutes)
As the maximum combined wattage of the devices are more than the maximum rated output (100W) of the Power-Buddie this test should theoretically fail. However we do know that devices very seldom reach their maximum watt requirement. The actual watt requirement depends on the device and what it is used for. The Power-Buddie manged to start all the device at once without going into overload protection mode.
For the above mentioned scenario, the Power Buddie DC UPS 75Wh (24000 mAh) provided backup power for 157 minutes.
The generally available 12000 mAh DC UPS do not have the required 48V output to power the 8 port switch for this scenario.
Why does it appear that the UPSes are performing far better than what they are rated for? Most devices, although not always the case, use substantially less watts than their maximum rating. Hence why it seems that the UPSes are performing better than expected. The theoretical maximum of 151W were never observed, the UPS reached a maximum of 36W.