DEVICE 1
Source: Portable Power Match planning methodologyCurated editable planning estimate using a 50% cycling duty cycle. The 300 W startup value is a conservative 3× compressor-start allowance; verify the appliance nameplate.
Sizing calculator
How much backup power do you need?
Choose your devices, a backup window, and what you are planning for. Advanced electrical controls are optional.
POWER NEEDS
Example planning values — edit them to match your actual devices.
DEVICE 2
Source: U.S. Department of Energy-hosted plug-load studyRounded planning value based on a measured 57.5 W laptop example; use the charger label or a watt meter for your device.
DEVICE 3
Source: U.S. Department of Energy appliance tableActual draw varies widely with screen size, brightness, and display technology.
DEVICE 4
Source: ENERGY STAR certified light-fixture listingExample certified LED fixture value; edit this to match the wattage printed on each lamp.
DEVICE 5
Source: Apple 20W USB-C Power Adapter specificationsUses a maximum adapter output as a conservative planning value; actual charging draw usually varies over the charge cycle.
LOAD SUMMARY
- Devices selected
- 6
- Estimated energy
- 1,675 Wh
- After conversion losses
- 1,971 Wh
- Recommended rated capacity
- ~2,319 Wh+
- Maximum simultaneous load
- 324 W
- Startup / surge requirement
- 524 W
Energy uses each row’s runtime, quantity, and duty cycle. Output sums checked devices; unchecked devices are treated as one-at-a-time loads. Startup replaces that device’s running draw during its start event.
YOUR ESTIMATED NEED
Battery size
~2.3 kWh+
Power output
~324 W+
Startup capability
~524 W
See calculation details
- Device energy
- 1,675 Wh
- After 85% conversion efficiency
- 1,971 Wh
- After separate 15% reserve
- 2,319 Wh
RECOMMENDED MATCHES
How scoring works1
BLUETTI Elite 300
3,014.4 Wh · 2,400 W · 57.98 lb
Match Score 72 / 100
Why this matches
- Meets your 324 W continuous running requirement.
- Battery capacity is closely sized to your requested runtime.
- Its surge rating covers your estimated 524 W startup requirement.
- Weighs 57.98 lb for transport.
Trade-off: At 57.98 lb, it is difficult to carry frequently.
Score breakdown
Capacity Fit 97Output Fit 60Use-case Fit 55Portability 18Feature Fit 80
Check Price on Amazon.comExact product listing at Amazon US — availability may change
Check price at manufacturer · BLUETTI USExact product listing at BLUETTI US — availability may change
2
Anker SOLIX F3000
3,072 Wh · 3,600 W · 91.5 lb
Match Score 69 / 100
Why this matches
- Meets your 324 W continuous running requirement.
- Battery capacity is closely sized to your requested runtime.
- Its surge rating covers your estimated 524 W startup requirement.
- Weighs 91.5 lb for transport.
Trade-off: At 91.5 lb, it is difficult to carry frequently.
Score breakdown
Capacity Fit 97Output Fit 60Use-case Fit 48Portability 5Feature Fit 83
Check price at manufacturer · Anker SOLIX USExact product listing at Anker SOLIX US — availability may change
Check Price on Amazon.comExact product listing at Amazon US — availability may change
3
BLUETTI Elite 400
3,840 Wh · 2,600 W · 85.98 lb
Match Score 65 / 100
Why this matches
- Meets your 324 W continuous running requirement.
- Provides enough battery capacity for your requested runtime.
- Its surge rating covers your estimated 524 W startup requirement.
- Weighs 85.98 lb for transport.
Trade-off: At 85.98 lb, it is difficult to carry frequently.
Score breakdown
Capacity Fit 91Output Fit 60Use-case Fit 48Portability 5Feature Fit 69
Check Price on Amazon.comExact product listing at Amazon US — availability may change
Check price at manufacturer · BLUETTI USExact product listing at BLUETTI US — availability may change