Just today 2/17/2019 I replaced some Duracell batteries in one of my Hunter Douglas expensive cellular shade. They require 8 AA alkaline batteries. 2 of the Duracell batteries were corroded so badly that 1 of hem would not even come out of the battery tube. The expiration date on them was 07-2027 so you see they were relatively recently purchased. I of course did not keep the sales receipt so I doubt that they will replace the battery tube that is completely ruined.
Since this is Sunday, I will be calling them Monday to see what they are willing to do. I bet it will be a negative answer as the cheapest replacement tube I have found is one that has been used at 25.00 on E-Bay. E-bay does have other sellers but they are new at 48.00 + shipping.