Anker SOLIX C1000
1,056 Wh capacity
Fastest-charging 1 kWh class unit; strong port selection.
- ⚡ 1,800W output
- 🔋 ~2.3 fridge-days
- LiFePO4
$999 MSRP Review pending
Sizing calculator
What Size Portable Power Station Do I Need?
Add the devices you actually run, and we'll show the watt-hour math — then the stations that clear it.
- No email required
- Manufacturer specs
- Math shown, not hidden
1
Add Your Devices
Add the devices you plan to power.
DeviceWattsQuantityRun time
2
Usage Scenario (Optional)
Helps refine your recommendation.
3
System Efficiency
Power stations lose energy to inverter & battery losses.
85%
Your Estimated Power Needs
Total daily use
0 Wh
Days
2.5
Efficiency
85%
Estimated Total Capacity Needed
0 Wh
Recommended Battery Size
Best Fit—
Includes 20–30% headroom for real-world use.
Recommended Power Stations
Matches update as you change the calculator. Prices shown are MSRP — street prices are usually lower.
EcoFlow DELTA 2
1,024 Wh capacity
Fast charging and expandable capacity in a portable package.
- ⚡ 1,800W output
- 🔋 ~2.3 fridge-days
- LiFePO4
$999 MSRP View Review
Jackery Explorer 1000 v2
1,070 Wh capacity
Light for its class, simple, and reliable — the camping default.
- ⚡ 1,500W output
- 🔋 ~2.4 fridge-days
- LiFePO4
$999 MSRP Review pending
BLUETTI AC180
1,152 Wh capacity
Big inverter headroom per dollar in the 1 kWh class.
- ⚡ 1,800W output
- 🔋 ~2.6 fridge-days
- LiFePO4
$999 MSRP Review pending
Wattage Tier Guide
| Tier | Capacity (Wh) | Best for | Example use |
|---|---|---|---|
| Small | 100 – 500 Wh | Phones, lights, small devices | Day trips, emergencies |
| Medium | 500 – 1,500 Wh | Camping, laptops, small appliances | Weekend trips, van life |
| Large | 1,500 – 3,000 Wh | Mini fridges, power tools, CPAP | Extended camping, RV |
| Extra Large | 3,000+ Wh | High-demand appliances, whole RV | Off-grid living, long term |
Pro Tips
- Add 20–30% extra capacity for unexpected usage.
- Fridges have high startup wattage — size accordingly.
- Solar charging can extend your runtime significantly.
- Check your device's label for accurate wattage.
How Sizing Works
- 1 Add your devices and their wattage.
- 2 Set how long you'll run each device daily.
- 3 We calculate total watt-hours needed.
- 4 Get the right battery size recommendation.
Common Appliance Runtimes (1,000 Wh)
- Laptop (60W) ~12 – 16 hrs
- Mini fridge (60W avg.) ~14 – 18 hrs
- CPAP machine (40W) ~18 – 22 hrs
- LED light (5W) ~80 – 100 hrs
Frequently Asked Questions
How do I calculate watt-hours?
Watt-hours = watts × hours. A 60 W laptop used 4 hours a day burns 240 Wh. Add every device's number together for your total daily use.
What's the difference between Wh and W?
Watts (W) measure instantaneous power draw; watt-hours (Wh) measure energy over time. A power station's capacity is in Wh; its inverter limit is in W. You need both to fit: enough Wh to last, enough W to run your biggest device.
How much extra capacity should I add?
Add 20–30% over your calculated need. It covers inverter losses, battery aging, cold-weather derating, and the loads you forgot to list.
Do power stations lose energy?
Yes — converting DC battery power to AC through the inverter typically loses 10–15%. That's why the calculator applies an efficiency factor instead of assuming the rated capacity is fully usable.