Do not compare tool-battery inverters by one fixed Wh number unless the pack set is defined
Do not compare tool-battery inverters by one fixed Wh number unless the pack set is defined.
Tool-battery guide
Tool-Battery Power Stations Need Pack-Count Math
Some jobsite power stations are really inverters for removable tool batteries. Their output can be source-backed, but runtime depends on the exact packs installed.
Running watts and starting watts can be sourced separately from runtime capacity
Running watts and starting watts can be sourced separately from runtime capacity.
Pack count, pack voltage/Ah, battery age, output path, and load watts decide the estimate
Pack count, pack voltage/Ah, battery age, output path, and load watts decide the estimate.
Pack energy Wh = pack voltage x amp-hours x number of packs; usable Wh still needs efficiency, reserve, health, and temperature.
Tool-Battery Power Stations Need Pack-Count Math
Some jobsite power stations are really inverters for removable tool batteries. Their output can be source-backed, but runtime depends on the exact packs installed.
Capacity Is Not One Model Number
A tool-battery power station can ship tool-only, with a kit pack set, or with user-selected packs. That is why the same inverter can have different Wh available.
Output Specs Still Matter
Continuous and starting watts are useful compatibility checks. Keep them separate from runtime, because a strong inverter can still have short runtime with small packs.
Why The Finder Excludes Them
The model finder expects one source-backed batteryCapacityWh value. Tool-battery platforms need a separate pack-count model so unknown capacity does not become a fake number.
Source-Backed Tool-Battery Platforms
These records are tracked separately until the calculator has a first-class pack-count model.
Swipe table sideways
| Platform | Battery system | Output | Source | Finder status |
|---|---|---|---|---|
| EGO POWER+ Nexus PST3042 | EGO POWER+ Nexus PST3042 uses EGO 56V ARC Lithium; capacity varies with the installed pack set. | 2,000 W running / 3,000 W starting. | Official source | Excluded from the fixed-Wh finder until pack-count capacity can be modeled explicitly. |
| DEWALT DCB1800B | DEWALT DCB1800B uses DEWALT 20V MAX / FLEXVOLT; capacity varies with the installed pack set. | 1,800 W running / 3,600 W starting. | Official source | Excluded from the fixed-Wh finder until pack-count capacity can be modeled explicitly. |
| Milwaukee MX FUEL CARRY-ON MXF002-2XC | Milwaukee MX FUEL CARRY-ON MXF002-2XC uses Milwaukee MX FUEL; capacity varies with the installed pack set. | 1,800 W running / 3,600 W starting. | Official source | Excluded from the fixed-Wh finder until pack-count capacity can be modeled explicitly. |
| Milwaukee M18 CARRY-ON 2845-20 | Milwaukee M18 CARRY-ON 2845-20 uses Milwaukee M18; capacity varies with the installed pack set. | 1,800 W running / 3,600 W starting. | Official source | Excluded from the fixed-Wh finder until pack-count capacity can be modeled explicitly. |
Estimate With The Pack Set
Use the battery runtime calculator once you know the installed pack voltage, amp-hours, pack count, and output path.
Loading calculatorPreparing calculator
This tool didn't load
Something blocked the calculator from starting. Check your connection or reload the page to try again.
Power station model
Power station modelEcoFlow DELTA 2
Battery capacity (Wh): 1024 WhContinuous output rating (W): 1800 WSurge output rating (W): 2700 W
Estimated runtime13h 3m8h 10m – 16h 13mEstimated runtime: 13h 3m, 8h 10m – 16h 13m
Output path
Estimated runtime
13h 3mEstimated runtime: 13h 3mThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.
Usable energy783 Wh
Average load60 W
Running watts60 W
Max surgen/a
Conservative8h 10m
Estimated13h 3m
Optimistic16h 13m
Conservative assumes harder conditions; optimistic assumes favorable conditions.
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Rated battery1024 WhBattery capacity (Wh): 1024 Wh
Usable energy783 Wh1024 Wh x 85% x 90% x 100% x 100%
Average load60 W60 W running, 60 W average after duty cycle and quantity
Estimated runtime13h 3m783 Wh / 60 W = 13h 3m
- 1024 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
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.
This link contains the numeric values you entered, but not custom load names.
Source-Backed Next Steps
Smallest matching record (8h)Jackery Explorer 600 v2WattRunTime.com
WattRunTime estimate
Estimated runtime
13h 3mThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.Usable energy783 Wh
Average load60 W
Running watts60 W
Max surgen/a
Runtime range
Conservative8h 10m
Estimated13h 3m
Optimistic16h 13m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Rated battery1024 WhBattery capacity (Wh): 1024 Wh
Usable energy783 Wh1024 Wh x 85% x 90% x 100% x 100%
Average load60 W60 W running, 60 W average after duty cycle and quantity
Estimated runtime13h 3m783 Wh / 60 W = 13h 3m
Assumptions
- 1024 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
Warnings
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.
Share URL
Use With These Tools
Related Guides
Portable Power Station Runtime Calculator
Use the battery runtime calculator once you know the installed pack voltage, amp-hours, pack count, and output path.
Battery Runtime Calculator
Use the battery runtime calculator once you know the installed pack voltage, amp-hours, pack count, and output path.
Emergency Backup Calculator
Use the battery runtime calculator once you know the installed pack voltage, amp-hours, pack count, and output path.
Surge Watt Calculator
Use the battery runtime calculator once you know the installed pack voltage, amp-hours, pack count, and output path.
Portable Power Station Size Finder
Use the battery runtime calculator once you know the installed pack voltage, amp-hours, pack count, and output path.
Appliance Wattage Library
Use the battery runtime calculator once you know the installed pack voltage, amp-hours, pack count, and output path.
Capacity guide
Usable Capacity vs Rated Capacity
A 1,000 Wh label is the starting point, not a promise that 1,000 Wh reaches your device.
Efficiency guide
Inverter Efficiency Losses
AC is convenient, but the inverter changes battery energy into wall-style power and some energy is lost as heat.
Margin guide
Reserve and Battery Health
A runtime plan is safer when it leaves margin for age, cold, changing load, and measurement error.
FAQ
Plan EGO, DEWALT, Milwaukee, and similar tool-battery power supplies without pretending they have one fixed Wh rating.
Why are these not normal model-finder records?
The fixed model finder needs one battery Wh value. Tool-battery platforms change capacity with the installed packs, so publishing one Wh number would be misleading.
Can I still estimate runtime?
Yes. First calculate the pack energy from voltage, amp-hours, and pack count, then apply efficiency, reserve, health, temperature, and load watts in the calculator.