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VTOMAN FlashSpeed 1000 Runtime Calculator
Quick answer: the VTOMAN FlashSpeed 1000 stores 828 Wh and delivers up to 1,000 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 6.3 hours. Last source check: 2026-08-21. This is an estimate, not a guarantee.

| Battery capacity | 828 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| AC output | 1,000 W |
| Surge output | 2,000 W (continuous AC ceiling proxy) |
| DC output | 120 W |
| USB-C output | 100 W |
| Solar input | 300 W |
| Weight | 17 kg |
| Confidence | Verified |
| Lifecycle status | Unknown |
| Source region | Global/general sources |
| Last verified | 2026-08-21 |
Capacity stores the 828Wh base station, not the 2,376Wh configuration with the separately sold FlashSpeed 1500 extra battery. The 2,000W figure is VTOMAN's V-BEYOND/peak mode for suitable resistive loads above the 1,000W continuous rating, not a conventional instantaneous surge rating and not a generic continuous rating. DC output stores the published 120W combined ceiling shared by the DC5521 and car ports; USB-C stores the 100W per-port ceiling.
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% | 3h 50m Output or startup compatibility is not established | Estimated | Calculator |
| CPAP without heated humidifier | 40 W · 100% · AC inverter · Reserve: 15% | 14h 57m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| Starlink Mini | 32 W · 100% · USB-C PD · Reserve: 10% | 21h 25m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| Wi-Fi router | 12 W · 100% · AC inverter · Reserve: 10% | 2d 6h Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| LED TV | 100 W · 100% · AC inverter · Reserve: 10% | 6h 20m Within the tracked power limits; compatibility still needs checking | 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.
10h 33mEstimated runtime: 10h 33mThis setup may cover a partial outage or single overnight session. Add capacity for more margin.
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
- 828 Wh
- Usable energy
- 633 Wh
- 828 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
- 10h 33m
- 633 Wh / 60 W = 10h 33m
- 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
10h 33mThis setup may cover a partial outage or single overnight session. Add capacity for more margin.Runtime range
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Assumptions
- 828 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: 828 Wh. Size the battery for your measured average load and required hours, including reserve.
- Tracked output: 1,000 W. Compare both running demand and startup demand before using any runtime estimate.
- Solar input limit: 300 W. 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: 17 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
- unknown: —
Models: VTOMAN
Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.
VTOMAN Jump 1500X
828 Wh · AC output: 1,500 W · Confidence: Verified
VTOMAN Jump 600
640 Wh · AC output: 600 W · Confidence: Estimated
VTOMAN FlashSpeed 600
499 Wh · AC output: 600 W · Confidence: Estimated
Sources
- VTOMAN FlashSpeed 1000 product page (Official; checked 2026-08-21)
- VTOMAN FlashSpeed 1000 user manual (Official; checked 2026-08-21)
