Hi Roger
I purchased a genuine Canon TC-80N3 remote some 1½ to 2 years ago and have just checked it, with the original Canon supplied battery, and it appears to be working okay in terms of scrolling through the various screens and options.
I’ve used it mainly as a “dumb” release and even then, only maybe 10-20 times during that period.
Even though Canon accessories can be expensive, for accessories that I judge to be vital and complex (mainly electronic & electro-mechanical) I tend to buy the original Canon product where there is a risk of a single point of failure or potential harm to my camera and lenses.
Cheers
Dennis
EDIT:
I should add that my reasoning is based upon the simple belief that Canon design engineers would specify reliable electronic and electro-mechanical components and that Canon are likely to maintain a better control over the materials and manufacturing processes for their products.
This is just an educated guess, so I could be wrong!
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