Choosing a portable power station for outages
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Quick answer
A portable power station is a big battery with outlets. It runs indoors with no fumes, so it suits apartments, overnight use and small loads. Two numbers matter most: capacity in watt-hours (how long it lasts) and output in watts (what it can run). For example, Jackery's Explorer 1000 v2 stores 1,070 Wh and outputs 1,500 W. EcoFlow's DELTA 3 Plus stores 1,024 Wh and outputs 1,800 W. Divide capacity by your device's watts for a rough ceiling on run time, and plan to recharge from the wall, solar or a generator.
What a power station is good for
Unlike a generator, a power station burns no fuel, so it makes no carbon monoxide and can run inside. That makes it the right tool for:
- Phones, lights and Wi-Fi.
- A CPAP or fan overnight.
- Topping up a refrigerator between generator runs.
- Apartments where a generator is not an option.
It is the wrong tool for running a whole house for days. Capacity runs out, and you need a way to recharge.
Capacity vs output: the two numbers
| Jackery Explorer 1000 v2 | EcoFlow DELTA 3 Plus | |
|---|---|---|
| Capacity | 1,070 Wh | 1,024 Wh |
| AC output | 1,500 W rated, 3,000 W surge | 1,800 W, 3,600 W surge |
| Battery | LiFePO4, 4,000 cycles to 70%+ | LiFePO4, 4,000 cycles to 80%+ |
| Wall charge | 1.58 h (AC adapter) | 1,500 W AC input, full in 56 min |
| Solar input | Up to 400 W | 500 W x 2 |
| Weight | About 23.8 lb | About 27.6 lb |
| Warranty | 3+2 years | 5 years |
Watts decide what can plug in. A device that draws more than the rated output will not run. Watt-hours decide how long. Both units above sit around 1,000 Wh, a common size for outage kits.
How long will it run? The quick math
Divide the battery's watt-hours by the device's watts. That gives a ceiling, not a promise, because the inverter uses some power too. Champion's wattage chart gives typical draws to plug in:
| Device (Champion chart) | Running watts | Ceiling on a 1,070 Wh unit |
|---|---|---|
| CPAP, no heated humidifier | 30 to 60 W | About 18 to 36 hours |
| CPAP with heated humidifier | 60 to 120 W | About 9 to 18 hours |
| LED bulb | 8 to 15 W each | About 71 to 134 hours per bulb |
| Refrigerator | 150 to 400 W | About 3 to 7 hours of running time |
A refrigerator also needs 800 to 1,200 starting watts, per Champion. That is within the surge rating of both units above. Check your own devices' labels, since real draws vary.
Recharging during a long outage
A power station is only as good as your plan to refill it. There are three ways:
- Wall power before a storm. EcoFlow lists a full charge in 56 minutes at 1,500 W AC input. Jackery lists 1.58 hours with its AC adapter.
- Solar. Jackery accepts up to 400 W through two DC ports. EcoFlow lists two 500 W solar inputs. Sun, panel angle and season set the real charging speed.
- A generator, run outdoors, to recharge the station quickly while it powers quiet loads inside.
Jackery lists a 12 hour charge from a car adapter, so the car is a slow last resort.
UPS mode and medical devices
Some stations can sit between the wall and a device and switch to battery when the grid drops. EcoFlow lists a 10 ms UPS switchover on the DELTA 3 Plus. Jackery's Explorer 1000 v2 lists a bypass mode for AC pass-through.
Read the fine print before you rely on this for health equipment. Jackery's own FAQ says its portable power stations are not recommended for use with medical devices, life-support equipment, or applications where a power interruption could cause injury. Ready.gov advises having alternate plans for power-dependent medical devices. Talk to your equipment supplier about a backup they approve.
Battery chemistry and care
Both units above use LiFePO4 (lithium iron phosphate) cells. Jackery rates its cells at 4,000 cycles to 70% or more of capacity, and EcoFlow rates its at 4,000 cycles to 80% or more. Mind the temperature limits. Jackery lists charging from 32 to 113 degrees F and discharging from 14 to 113 degrees F. So a cold garage in winter can stop charging. Store a power station charged and indoors, and top it up on a schedule.
What to look for when you buy
1,000 Wh class LiFePO4 power station (example: Jackery Explorer 1000 v2)
Best for: Phones, lights, Wi-Fi and a CPAP through a night or two
Jackery lists 1,070 Wh, 1,500 W rated output with 3,000 W surge, LiFePO4 cells rated 4,000 cycles to 70%+, about 23.8 pounds and a 3+2 year warranty.
Watch out: Jackery says it is not recommended for medical devices or life-support equipment.
See options on Amazon (opens Amazon in a new tab)Fast-charging power station with UPS (example: EcoFlow DELTA 3 Plus)
Best for: Topping up quickly before a storm and keeping a router or computer on through blips
EcoFlow lists 1,024 Wh, 1,800 W output with 3,600 W surge, a full AC charge in 56 minutes, two 500 W solar inputs, a 10 ms UPS and a 5 year warranty.
Watch out: It weighs about 27.6 pounds. Expansion batteries are sold separately.
See options on Amazon (opens Amazon in a new tab)Portable solar panel matched to your station
Best for: Recharging during outages longer than a day
Both stations accept solar input, Jackery up to 400 W and EcoFlow 500 W per port, so a panel turns a one-night battery into a multi-day setup.
Watch out: Check the connector and voltage range against your station's solar input spec.
See options on Amazon (opens Amazon in a new tab)Plug-in watt meter
Best for: Measuring what your fridge or CPAP actually draws
Run time math depends on real watts, and Champion's chart shows wide ranges, such as 150 to 400 W for a refrigerator.
Watch out: Measure over a full day to capture compressor cycling.
See options on Amazon (opens Amazon in a new tab)Questions people ask
- What is a portable power station?
- A large rechargeable battery with built-in AC outlets, USB ports and an inverter. It runs indoors with no fuel, and recharges from the wall, solar panels, a car or a generator.
- How long will a portable power station run a refrigerator?
- Divide watt-hours by the fridge's running watts for a ceiling. Champion lists fridges at 150 to 400 W, so a 1,070 Wh unit gives roughly 3 to 7 hours of compressor run time.
- Can a power station run a CPAP?
- Often yes. Champion lists CPAPs at 30 to 60 W without heat. But Jackery says its stations are not recommended for medical devices, so plan backup power with your equipment supplier.
- What's the difference between a power station and a generator?
- A generator burns fuel and must run outdoors because of carbon monoxide. A power station stores electricity, runs indoors silently, and runs out until recharged.
Sources
- Jackery Explorer 1000 v2 Portable Power Station (specs and FAQ), Jackery
- EcoFlow DELTA 3 Plus Portable Power Station (specs), EcoFlow
- Generator Wattage Chart, Champion Power Equipment
- Power Outages, Ready.gov