is this true?

someone said to me that all electric devices , electronic devices in particular, has to be turned ON from time to time, even if you don't need to use it, to keep it "healthy". For example, if you will not use a laptop for a year, you should turn it on and shut it down at least once every months or few months to keep the hardware "healthy" ,

is it true?

or is it a legend? or is it likely to be true?

I have a laptop not turned on for half a year

 

Well device with battery`s should not be allowed to go flat/empty as they discharge slowly when they are off and this can damage or kill the battery so turn them on every month and check the battery level and charge if needed.

John.

 

Aside from the battery (already addressed), electronics don't really care about that sort of thing.

 

This is something new to me. Doesn't sound right (I would ignore this advice for electronics).

As for the battery part; I would charge the battery to 40%, remove it from the device and then store it in a cool/dark/dry location until it was needed (if more than a year? I would store the battery in a fridge, inside a sealed ziplock bag).

If the battery cannot be removed; I would still charge it to 40% and place it in a cool/dark/dry location inside a sealed ziplock bag, but would check on it every other month (after letting it get to normal room temps).

At a 40% charged level and assuming the notebook doesn't draw any power (i.e. USB ports) when off and stored in a cool/dry location; the battery level will drop only very slightly from self discharge and will require the lowest number of charges (giving the user the most possible usable battery life/usage) to keep in this 'maintenance; level.

For your notebook that you've ignored for half a year I would see if it would even take a charge (see a similar thread recently here) now, depending on the charge level and how/where it was stored for so long.

Good luck.

 

my laptop is lenovo internal battery + external battery

some battery is built internally.. how to take care of the internal battery?

 

The answer is already in the quoted answer you're replying to.

 

Charge internal battery and turn it on, to not lose it capacity (as mine when i overload laptop with gaming on battery and after battery was empty, the % of wear leven goes up)