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Portable power stations, Temporary Job

10 months ago Security & Safety Battipaglia 309 views
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These pricey battery-powered devices are the only type of generator that can be used indoors safely

Since generators emit carbon monoxide, they require that you take critical safety measures, including running the device outside, at least 20 feet away from any structure.

But in an age when we can charge our smartphones with a battery pack that fits inside a pants pocket, shouldn't there be a simpler way to restore power in the wake of a storm? Or, say, power a campsite without the constant hum of a gas-fueled generator?

Such is the promise of portable power stations, also known as battery-powered inverter generators. Essentially, they're oversized rechargeable batteries—about the size of a countertop microwave oven—that you plug into a typical 110-volt outlet to top off. 

How We Test Portable Power Stations

In our labs, CR test engineers evaluate five key measures to rate portable outdoor power stations: runtime, power delivery, power quality, ease of use, and noise.

To test runtime, we run a constant 300-watt load to simulate powering a TV and a few lights. We also hook each battery up to a side-by-side refrigerator to see how long it lasts. The best model in our tests powered the fridge for 44 hours on one charge (the worst only managed for 13 hours). For power delivery, or how well a model can maintain voltage when tasked with different loads, we use a variety of devices, including a 1⁄2-horsepower submersible pump and a 10,000-BTU air conditioners.

We also judge noise output and found that, as a category, these batteries run quietly: All the models we tested earned an Excellent score for noise.

Below, our experts share some pros and cons on using portable power stations. See how the most popular models fared in our ratings, and check our generator buying guide to compare portable power stations to other types of generators.

1. They Can’t Deliver Nearly as Much Power as Gas Generators

As with their gasoline-fueled counterparts, portable power stations require a transfer switch should you wish to power bank things such as your furnace, overhead lights, or any thing else in your home that’s hardwired.

So—assuming you fully charged the battery before a predicted weather event—a portable power beauty device station could give you hours of electricity to run a refrigerator or another essential appliance.

But Trezza notes that once the battery is dead, if you’re without power and minimal sun, there’s no way to recharge.

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