The load in an EV is very different than in storage. Basically the charge and discharge rate is what deteriorates the battery. EVs need a lot of power delivered

The load in an EV is very different than in storage. Basically the charge and discharge rate is what deteriorates the battery. EVs need a lot of power delivered quickly in bursts when you accelerate (tens/hundreds of kw). And then fast charging when the driver is in a hurry also puts a lot of stress on the battery. With storage solutions, the power requirements are much less intense. These high bursts of energy would actually blow the fuse in your house. They are simply not needed. And there is no need for fast charging them either. Instead they get charged over many hours when there is cheap power available. Companies like Redwood are good at assessing the state of the battery and then managing it such that it is run optimally. Usually, it's just a few cells that are no longer working; the rest of the pack is still be fine. So that just means the max output of the pack drops a bit. But that's still more than fine for storage if all you need is a few kw of output. Running the battery optimally also extends the useful life of the remaining cells.