Tiny Tuesday - Something I see every day

There are lots of things I see most days but this is definitely something I see every day

Up close it looks a bit battered but it goes on and on - until the battery runs out that is.   The manufacturers told me that the battery could only be replaced by them - for which they wanted to charge me £60!

Liking a challenge,  I took the back off,  found a matching battery for under £1 on eBay and did it myself.