Hello,

Smartphone with non-removable LiOn battery: it will be turned off and
not used for many months, perhaps even 1 or 2 years. Do you think it
is better to keep the PSU attached though, or leave the smartphone
externally unpowered for all this time?

And what if a smartphone is always turned on (to receive phone calls)
instead but most of the time it is kept on the desk, is it better to
leave the charger always connected in this case?

I think it's always better to leave the PSU connected (because it
will make the battery work, and thus wear, way less), but it puzzles
me to see those messages like "battery is 100% charged now, disconnect
the charger", like to hint that it's no good to leave it connected.

Chers,
Mario

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