So because my battery powered pepper shaker has broken I bought another, very expensive but it should be delivered in the next couple of days. But because that is broken I had to get out an old manual grinder which had to be replaced because I couldn't work it. But tonight I tried the manual one, which I havent used for a year or 18 months, and it just works. So obviously some aspect of my hands and arms is better, but I have already spent way too much on a new battery version