VOCSN Backup Power Runtime Estimates
Backup power is essential when your basic needs like breathing require a machine. Most of the equipment we use has battery power like our ventilator and our lifts. The onboard power is usually sufficient but typically only lasts 4 – 8 hours depending on usage. But we wanted to be prepared for power outages and travel.
We had a situation where Steve’s NIV ran out of battery power at an event. We were able to get it plugged in, but it was going to take hours to charge before we could go home safely. Friends and family jumped into help. Our friends got us the Ryobi battery solution and our son in law brought our large generator from home about an hour away. We got home safely, and the importance of backup power was reinforced.
Measured Power Assumptions
| Scenario | Estimated Average Load | Notes |
|---|---|---|
| VOCSN ventilation only | 35 W | Measured normal usage. Brief peaks were about 40 W to 45 W every 5 seconds. |
| VOCSN ventilation with 2 LPM oxygen | 60 W | Estimated average based on cycling peaks around 160 W every 5 to 6 seconds. |
| Surface Pro with eye gaze controller | 40 W | Used for travel estimates with external power stations only. |
VOCSN Batteries Only
| Battery Source | Capacity | Vent Only | With 2 LPM Oxygen |
|---|---|---|---|
| VOCSN internal battery | 56 Wh | 2 hrs @ 35 W | 1 hr @ 60 W |
| VOCSN detachable batteries | 167 Wh | 5 hrs @ 35 W | 3 hrs @ 60 W |
| VOCSN internal + detachable batteries | 223 Wh | 6 hrs @ 35 W | 4 hrs @ 60 W |
External Power Stations: VOCSN Only
| Power Source | Usable Capacity | Vent Only | With 2 LPM Oxygen |
|---|---|---|---|
| Jackery Explorer 1000 v2 | 963 Wh | 28 hrs @ 35 W | 16 hrs @ 60 W |
| Anker SOLIX F2000 | 1843 Wh | 53 hrs @ 35 W | 31 hrs @ 60 W |
External Power Stations: VOCSN + Surface Pro + Eye Gaze
| Power Source | Vent Only Total Load | Vent Only Runtime | Oxygen Total Load | Oxygen Runtime |
|---|---|---|---|---|
| Jackery Explorer 1000 v2 | 75 W | 13 hrs | 100 W | 10 hrs |
| Anker SOLIX F2000 | 75 W | 25 hrs | 100 W | 18 hrs |
Quick Planning Summary
With oxygen: 4 hrs
With oxygen: 16 hrs
With oxygen: 31 hrs
Anker: 25 hrs vent, 18 hrs oxygen






