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ROCKSOLAR Weekender MAX Runtime Calculator
Quick answer: the ROCKSOLAR Weekender MAX stores 111 Wh, with a recorded continuous AC limit of 80 W. That is below the 100 W reference load, so no usable runtime is claimed for that load. Choose a lower compatible load or another output. Last source check: 2026-08-26.

| Battery capacity | 111 Wh |
|---|---|
| Battery chemistry | unknown |
| AC output | 80 W |
| Surge output | unknown |
| DC output | unknown |
| USB-C output | unknown |
| Solar input | unknown |
| Weight | unknown |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | Global/general sources |
| Last verified | 2026-08-26 |
Runtime estimate
Formula starting points use each scenario’s default watts, duty cycle and output path, with 10% reserve or 15% for CPAP. Linked detail pages use the same inputs. Hours apply only if the device can run and start; they are not measured runtimes.
| Device scenario | Planning default | Estimated runtime | Device scenario: Confidence | Models |
|---|---|---|---|---|
| Full-size refrigerator | 500 W · 33% · AC inverter · Reserve: 10% | 31m Exceeds a tracked power limit — do not rely on these hours | Estimated | Calculator |
| CPAP without heated humidifier | 40 W · 100% · AC inverter · Reserve: 15% | 2h 0m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| Starlink Mini | 32 W · 100% · USB-C PD · Reserve: 10% | 2h 52m Output or startup compatibility is not established | Estimated | Calculator |
| Wi-Fi router | 12 W · 100% · AC inverter · Reserve: 10% | 7h 20m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| LED TV | 100 W · 100% · AC inverter · Reserve: 10% | 51m Exceeds a tracked power limit — do not rely on these hours | Estimated | Calculator |
Runtime calculator
Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
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Estimated runtime
Within the tracked power limits; compatibility still needs checking
This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
1h 25mEstimated runtime: 1h 25mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.
These are calculated sensitivity cases, not a statistical confidence interval. Conservative uses lower efficiency and battery health, more reserve/temperature loss and higher load; optimistic changes these assumptions in the opposite direction.
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
- Within the tracked power limits; compatibility still needs checking
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
- Rated battery
- 111 Wh
- Usable energy
- 85 Wh
- 111 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
- 1h 25m
- 85 Wh / 60 W = 1h 25m
- 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.
WattRunTime.com
WattRunTime estimate
Estimated runtime
1h 25mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.Runtime range
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Assumptions
- 111 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. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
- Within the tracked power limits; compatibility still needs checking
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Planning notes
- Capacity class: 111 Wh. Size the battery for your measured average load and required hours, including reserve.
- Tracked output: 80 W. Compare both running demand and startup demand before using any runtime estimate.
- Solar input limit: unknown. Actual refill depends on panel voltage/current compatibility, sunlight, angle and charging losses.
Known data gaps
- Unverified or missing specifications remain visible. The confidence label describes the station record, not a tested runtime or approval for emergency use.
- Weight: unknown. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
- unknown: Battery chemistry, Surge output, DC output, USB-C output, Solar input, Weight
Models: ROCKSOLAR
Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.
ROCKSOLAR Weekender
88 Wh · AC output: 80 W · Confidence: Estimated
ROCKSOLAR Weekender MAX PRO
277.5 Wh · AC output: 250 W · Confidence: Estimated
Sources
- ROCKSOLAR Weekender MAX official product page (Official; checked 2026-08-26)
