tineared
Addicted to Fun and Learning
In my experience Li-Ion batteries manufactured in Japan and S Korea will last for a very long time, even when not treated well.
Batteries from China are a crap shoot ranging from pretty good to absolute garbage.
Samsung, Panasonic and Sony are the best that I know of. I have well-used 18650 cells that are over 9 years old and still perform almost as good as new.
Obviously you don't always have access to who manufactured the batteries for the device you are contemplating buying, but it never hurts to ask
Batteries from China are a crap shoot ranging from pretty good to absolute garbage.
Samsung, Panasonic and Sony are the best that I know of. I have well-used 18650 cells that are over 9 years old and still perform almost as good as new.
Obviously you don't always have access to who manufactured the batteries for the device you are contemplating buying, but it never hurts to ask

