The EcoFlow Black Friday sale is in full swing, knocking thousands of dollars off portable power stations and their accessories. One of the best discounts at the moment is on the Delta Pro 3, which is 37 percent off and down to $2,299. That’s the lowest we’ve seen it and, considering it typically costs $3,699, it’s a great deal. Amazon’s matching the sale price as well.

The Delta Pro 3 topped Yahoo’s list of the best portable power stations, and for very good reason. This thing is a beast. It boasts a 4,096Wh capacity, so it can power an average 500-watt refrigerator for over 24 hours. That’s with continuous use. It can be stretched out to two or three days by only running the appliance during daylight hours. There’s even a discounted bundle that includes an extra battery for $3,599.

EcoFlow

It includes four standard 120V AC outlets and a single 240V outlet. It could potentially be a temporary hub of a whole-home battery backup. There are numerous charging options here, including a standard AC outlet, solar panels and, interestingly, a cigarette lighter.

The only potential downside here is the Delta Pro 3 really pushes the boundaries of what can be considered portable. It weighs 113 pounds, though it does have wheels and a telescoping handle.

The Delta Pro 3 is just one of the products on sale right now. The Delta Pro Ultra, which is intended as a whole-home backup, is down to $3,999. This represents a savings of more than $2,000. Another Yahoo top pick, the Delta 2 Max, is $1,000 off and down to $899.