An ecoflow battery is a green and clean way to power devices off the grid. Unlike generators, these batteries require no gas to operate and emit minimal pollution.

They’ve made a name for themselves as the go-to choice for recharging your phone and tablet, but they’re also capable of running power tools and appliances emissions-free. They’re especially useful for camping, tailgating and other uses where you need to recharge from a non-grid source.

It can recharge from a wall outlet in less than two hours and has solar-charging capability, which means you can recharge your battery even when you’re not connected to the grid. The Delta 1300 battery also lasts longer than similar systems from brands like Goal Zero and Enerplex, which typically take 25 hours to recharge.

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In our testing, we’ve found it can run a few lights for a few minutes at a time and a small refrigerator for a few hours when you don’t have access to the grid. But, as you’d expect from a portable power station, it isn’t very powerful and we would recommend adding a gas generator to your system for the best experience.

The Wave also comes with a cool mode that intelligently blends cooling and fan modes to ensure a balanced amount of airflow for as long as possible. You can set the unit to a low, medium or high cool mode. Using the Eco Mode, we were able to get up to eight hours of runtime before having to charge the battery again.