EcoFlow is hosting an early Black Friday sale on portable power stations. This drops prices by up to 42 percent on many of its well-regarded products. For instance, the Delta Pro 3 is on sale for $2,299. This is a discount of 37 percent, as the typical cost is $3,699. That’s a significant drop in price. 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.