DEVICE 1
Source: U.S. Department of Energy appliance tableThe 150 W startup value is a conservative motor-start planning allowance; verify the fan label.
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: ENERGY STAR certified light-fixture listingExample certified LED fixture value; edit this to match the wattage printed on each lamp.
DEVICE 3
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
- 4
- Estimated energy
- 316 Wh
- After conversion losses
- 372 Wh
- Recommended rated capacity
- ~438 Wh+
- Maximum simultaneous load
- 89 W
- Startup / surge requirement
- 189 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
~0.44 kWh+
Power output
~89 W+
Startup capability
~189 W
See calculation details
- Device energy
- 316 Wh
- After 85% conversion efficiency
- 372 Wh
- After separate 15% reserve
- 438 Wh
RECOMMENDED MATCHES
How scoring works1
Jackery Explorer 500 V2
512 Wh · 500 W · 12.57 lb
Match Score 84 / 100
Why this matches
- Meets your 89 W continuous running requirement.
- Battery capacity is closely sized to your requested runtime.
- Its surge rating covers your estimated 189 W startup requirement.
- Weighs 12.57 lb for transport.
Trade-off: Its battery capacity cannot be expanded later.
Score breakdown
Capacity Fit 98Output Fit 60Use-case Fit 64Portability 100Feature Fit 86
Check price at manufacturer · Jackery USExact product listing at Jackery US — availability may change
Check Price on Amazon.comExact product listing at Amazon US — availability may change
2
Jackery Explorer 600 Plus
632 Wh · 800 W · 16.1 lb
Match Score 82 / 100
Why this matches
- Meets your 89 W continuous running requirement.
- Battery capacity is closely sized to your requested runtime.
- Its surge rating covers your estimated 189 W startup requirement.
- Weighs 16.1 lb for transport.
Trade-off: Its battery capacity cannot be expanded later.
Score breakdown
Capacity Fit 96Output Fit 60Use-case Fit 63Portability 98Feature Fit 80
Check price at manufacturer · Jackery USExact product listing at Jackery US — availability may change
Search AmazonSearch results — exact listing not verified
3
Jackery Explorer 600 V2
640 Wh · 500 W · 14.1 lb
Match Score 82 / 100
Why this matches
- Meets your 89 W continuous running requirement.
- Battery capacity is closely sized to your requested runtime.
- Its surge rating covers your estimated 189 W startup requirement.
- Weighs 14.1 lb for transport.
Trade-off: Its battery capacity cannot be expanded later.
Score breakdown
Capacity Fit 95Output Fit 60Use-case Fit 64Portability 100Feature Fit 80
Check price at manufacturer · Jackery USExact product listing at Jackery US — availability may change
Check Price on Amazon.comExact product listing at Amazon US — availability may change