Keep internet and home automation online to ensure a graceful start-up & initiation of IoT devices after power failures.
Device List:
| Function | Device | Model | Volt | Rating | Wh |
| Internet Router | Ubiquity EdgeRouterX (5P) | ER-X | 12V | 0.5A | 6 |
| ISP Router | Huawei EchoLife | HG8240H | 12V | 1.0A | 12 |
| HA Platform | Intel NUC | DCCP847DYE | 19V | 3.42A | 64.98 |
Total Wh = (6+12+64.98) = 82.98
- 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
Theoretical backup time for Power Buddie DC UPS 75Wh = 54,23 Minutes
This is calculated (UPS Wh (75) \ Total device Wh (64.98) * 60 minutes)
For the above mentioned scenario, the Power Buddie DC UPS 75Wh (24000 mAh) provided backup power for 244 minutes.
In comparison, a generally available 12000 mAh DC UPS provided backup power for 98 minutes. And the generally available 8000 mAh DC UPS could not handle the load and went into overload protection mode.
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 82.98W were never observed, the UPS reached a maximum of 26W and averaged on between 15 and 18W.
