Ok to remove built-in Lenovo laptop battery?

Try3 said:

Might I suggest only waiting one month?
If Lenovo support are correct then there'll still be charge left after one month but would not be after four.

I'll look forward to seeing your results.
Apart from the Lenovo I mentioned before, I don't have a computer that's off for long enough to do such tests.
[Apart from a Chuwi but it lies about its state of charge all the time - it constantly claims its battery has 150% of its design charge level.]


Merry Christmas,
Denis

Oh, and thanks for the rep.

If I understand what Lenovo support was saying correctly, they were talking about an internal battery that was still installed. There seem to be processes still going on in the laptop even when it's shut down. I even noticed that when it's shut down, I can press the space bar and then a battery symbol appears on the screen for about 3 seconds showing what the battery level is. I think I've even seen this pop up even when I don't press anything. By removing the battery, I should be able to prevent the depletion of the battery in storage. My Dell laptop's battery doesn't run down when not installed, but it's easily removable. I wish they all were.

Try3 said:

"I can press the space bar and then a battery symbol appears on the screen for about 3 seconds showing what the battery level is"

That's set or unset in the Bios.


Denis

I see.
Well, since I already went through the trouble of removing the battery, I'll just leave it out for now and then I'll probably reinstall it in a few months to see if it retained it's charge, then change the bios to make it stop draining the battery when shut down, and then wait awhile to see what happens (or doesn't happen). If all goes well at that time, I'll leave the battery installed.

Try3 said:

Again, I think a single month would avoid being too late.
If "a few months" is too long then you'd have to repeat the experiment.


There is no such Bios setting.


All the best,
And thanks for the rep,
Denis

Ok, the experiment is now complete, and has very interesting results.
I was originally going to leave the battery removed for a few months to see if the battery drained at the same rate as when it was installed. Remember, my past experience is that I had left the computer Shut Down (not in Sleep mode) for 4 months and 3 weeks after charging the battery to 75%. When I started it back up after all that time, the battery level was down to ZERO.

So, I decided to remove the internal battery after charging it up to 70% and then wait a few months to reinstall it and see if it had drained at the same rate as when it was installed. I ended up waiting for 5 months and 10 days. The result is that the battery level upon reinstallation and computer startup was at 62%. It had only dropped by a measly 8% in over 5 months!

Conclusion: The laptop is indeed using the battery even after being shut down. I've previously done everything I can to stop that from happening, and it seems that nothing will prevent it, short of physically removing the battery.