This simple aluminum foil could help a AAA battery fit a AA slot temporarily —but there's one important warning

Using aluminum foil to bridge the gap between a AAA battery and a AA terminal is a clever bit of "MacGyver" engineering, but its strictly a temporary emergency fix. While it works perfectly fine in a pinch to get your TV remote or a wall clock running for an evening, leaving it in long-term introduces a few hidden risks.

Raccontata daeconomictimes.indiatimes.com