Only batteries in these cameras are the small ones for the meter, otherwise 100% mechanical, plus if it was exposure then I should have edge markings.
I'm pretty careful with contamination, I mix my chems in 1l batches and store them in accordian bottles, i then heat up the required amount in separate marked bottles
Looking on Lightroom, the last time I scanned any colour was over 3 months ago, and the storage may not have been ideal temperatures, and of course my part C developer has died too, I have an unopened concentrate set to use but I think i'm going to have a full scale wash of everything first just in case