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Companion Rover 300 Runtime Calculator
Use this source-linked record to estimate runtime from tracked capacity, output, charging, and weight fields. Unknown specs stay unknown until an official or manufacturer-grade source confirms them.
Quick answer: the Companion Rover 300 stores 288 Wh and delivers up to 300 W of continuous AC power. Under this site's planning assumptions (85% inverter efficiency, 10% reserve), a steady 100 W AC load runs for roughly 2.2 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.
Capacity288 Wh
AC output300 W
Surge600 W
ChemistryLiFePO4
ConfidenceEstimated
Source regionregional
Checked2026-08-27
Swipe table sideways
| Battery capacity | 288 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| AC output | 300 W |
| Surge output | 600 W |
| DC output | unknown |
| USB-C output | unknown |
| Solar input | 100 W |
| Weight | unknown |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | regional |
| Last verified | 2026-08-27 |
Companion is an Australian outdoor brand whose storefront is served from the regional oztrail.com.au domain (companionbrands.com.au redirects there), so specifications are quoted for the 240V Australian market SKU. Companion does not publish port-level DC or USB-C ceilings or a product weight for the Rover range, so those fields stay unknown and the record remains at estimated confidence.
Regional source note: Some specs are cross-checked against official regional pages (oztrail.com.au: Companion official Rover 300 Power Station product page). Regional SKUs can differ; verify the manufacturer page for your market before purchase or emergency planning.
Runtime Starting Points
These are formula estimates using the tracked capacity, a 10% reserve, and each scenario's default wattage and duty cycle. They are planning starters, not measured runtimes.
Swipe table sideways
| Scenario | Default load | Estimate | Scenario confidence | Station page |
|---|---|---|---|---|
| Full-size refrigerator | 500 W at 33% | above tracked AC output | Estimated | Use calculator |
| CPAP without heated humidifier | 40 W at 100% | 5h 30m | Estimated | Use calculator |
| Starlink Mini | 32 W at 100% | 7h 17m | Estimated | Use calculator |
| Wi-Fi router | 12 W at 100% | 19h 0m | Estimated | Use calculator |
| LED TV | 100 W at 100% | 2h 12m | Estimated | Use calculator |
Calculator for this station
Adjust watts, duty cycle, reserve, output path, and startup surge with Companion Rover 300 prefilled from the source-linked specs above.
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Power station model
Battery capacity (Wh): 288 WhContinuous output rating (W): 300 WSurge output rating (W): 600 W
Estimated runtime3h 40m2h 18m – 4h 34mEstimated runtime: 3h 40m, 2h 18m – 4h 34m
Output path
Estimated runtime
3h 40mEstimated runtime: 3h 40mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.
Conservative2h 18m
Estimated3h 40m
Optimistic4h 34m
Conservative assumes harder conditions; optimistic assumes favorable conditions.
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
- Rated battery
- 288 Wh
- Usable energy
- 220 Wh
- 288 Wh x 85% x 90% x 100% x 100%
- Running watts
- 60 W
- Average load
- 60 W
- Max surge
- n/a
- Fixed station overhead
- Unknown (not included)
- 60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
- Estimated runtime
- 3h 40m
- 220 Wh / 60 W = 3h 40m
- Output path
- AC inverter
- Efficiency (%)
- 85
- Reserve kept unused (%)
- 10
- Battery health (%)
- 100
- Cold weather loss (%)
- 0
This link contains the numeric values you entered, but not custom load names.
Source-Backed Next Steps
Smallest matching record (8h)Jackery Explorer 600 Plus
WattRunTime.com
WattRunTime estimate
Estimated runtime
3h 40mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.Usable energy220 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative2h 18m
Estimated3h 40m
Optimistic4h 34m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy220 Wh288 Wh x 85% x 90% x 100% x 100%
Fixed station overheadUnknown (not included)60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
Estimated runtime3h 40m220 Wh / 60 W = 3h 40m
Assumptions
- 288 Wh nominal battery capacity
- AC inverter output path
- 85% conversion efficiency
- 10% reserve kept unused
- 60 W average load from 1 load
- 100% battery health
- 0% temperature loss
- Fixed station overhead unknown; not included
Warnings
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.
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Good fit when
- Capacity is a compact class; use it for small electronics and short essentials rather than high-wattage appliances.
- Tracked AC output is 300 W, so high-draw appliances and tools need careful filtering.
- Tracked solar input is 100 W before panel, weather, angle, and controller losses.
Watch out for
- Surge output is tracked, but device startup behavior should still be checked against the actual load.
- Still unknown in the source-backed record: dc output, usb-c output, weight.
- Weight is unknown, so portability should not be inferred from this model page yet.
- Confidence is not marked verified; keep the linked source context visible before making a purchase or emergency plan.
Related Companion Records
Nearby source-linked models from the same brand help you compare capacity, output, and unknown fields without leaving the data set.
Rover 600
560 Wh, 700 W AC output, confidence: Estimated.
Rover 1000
1,008 Wh, 1,200 W AC output, confidence: Estimated.
Rover 1300
1,344 Wh, 1,200 W AC output, confidence: Estimated.
Sources
- Companion official Rover 300 Power Station product page (official; checked 2026-08-27)