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Inergy APEX Runtime Calculator
Quick answer: the Inergy APEX stores 1,100 Wh and delivers up to 1,500 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 8.4 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.

| Battery capacity | 1,100 Wh |
|---|---|
| Battery chemistry | Li-ion NMC |
| AC output | 1,500 W |
| Surge output | 3,000 W |
| DC output | unknown |
| USB-C output | unknown |
| Solar input | 500 W |
| Weight | 11.3 kg |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | Global/general sources |
| Last verified | 2026-08-27 |
Inergy's own storefront no longer lists the APEX, so this record uses a retailer-published copy of the manufacturer specification table. USB-C and DC ceilings stay unknown because the table publishes voltage and current profiles rather than watt limits.
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% | 5h 6m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| CPAP without heated humidifier | 40 W · 100% · AC inverter · Reserve: 15% | 19h 52m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| Starlink Mini | 32 W · 100% · USB-C PD · Reserve: 10% | 1d 4h Output or startup compatibility is not established | Estimated | Calculator |
| Wi-Fi router | 12 W · 100% · AC inverter · Reserve: 10% | 3d 0h Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| LED TV | 100 W · 100% · AC inverter · Reserve: 10% | 8h 25m 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.
14h 2mEstimated runtime: 14h 2mThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.
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
- 1100 Wh
- Usable energy
- 842 Wh
- 1100 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
- 14h 2m
- 842 Wh / 60 W = 14h 2m
- 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
14h 2mThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.Runtime range
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Assumptions
- 1100 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: 1,100 Wh. Size the battery for your measured average load and required hours, including reserve.
- Tracked output: 1,500 W. Compare both running demand and startup demand before using any runtime estimate.
- Solar input limit: 500 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: 11.3 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
- unknown: DC output, USB-C output
Models: Inergy
Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.
Inergy Kodiak
1,100 Wh · AC output: 1,500 W · Confidence: Estimated
Inergy Flex Tactical 1500
1,058 Wh · AC output: 1,500 W · Confidence: Estimated
Inergy Flex 1500 TL
1,000 Wh · AC output: 1,500 W · Confidence: Estimated
Sources
- Inergy APEX specification table published by retailer Shop Solar Kits (Retailer; checked 2026-08-27)
