Battery charging advice

When the battery is fully charged is it necessary to switch the AC charge off? I have had contradictory advice on this, and now due to a charging / battery issue with my 2-in-1 Tablet PC I need to know. If I do turn AC off I usually (not always) find I cannot switch charging back on. For charging to restart I have to Shutdown. Restarting the PC does not cause charging to start again. It can be that at the point charging is required, it is at the least inconvenient to Shutdown. If I have to, so be it, but it would be better if I can leave AC switched on. What usually happens then is when the charge drops to some point around 70% to 80% it starts charging again, automatically.

A related question, is it normal not to be able to run the PC from the AC when the battery charge has fallen to 0%? Or maybe this can be done if the battery is removed, but if so it is not of use to me as my Tablet PC, in common with others, is not easy to open

I've never seen an AC adapter that has a switch, need to unplug it from the computer if wanting to use battery only. I have seen Notebooks that have to drop battery supply down to less than 70% before the charging message shows on the icon. [An All-in-One Desktop does not contain a battery although the AC adapter will look like the ones used by Notebooks.]

By switching off the AC supply I mean using the switch on the mains hub which I have. It has 6 AC sockets and 2 USB ---- very useful.

I am still hoping to get an answer to my question --- when the battery reaches 100% and I get a popup notification saying "Fully Charged -- disconnect AC connection" can I in fact leave it on, in charge mode but not charging? My understanding is that the answer is YES, modern batteries are not harmed by being left on even if 'charging', but I would welcome reassurance.

Also, although I said above that when the charge drops to around 70% - 80% charging 'usually' starts up again automatically it should be 'sometimes' as what usually happens is charging does not start automatically, I have to Shutdown Windows to start charging again. I believe this to be a fault, either with the hardware or the OS, I have no idea which. It is not a major issue but can be inconvenient at times, and if I do not keep an eye on the battery status (for which I do now have some good apps) it can lead to a crash when 0% is unintentionally reached.

So an All-in-One Desktop does not have a battery? That seem to me to mean it is wrongly named as without a battery it cannot fulfill ALL functions can it? I can think of occasions when a battery would serve a useful purpose, but I have not used a Desktop for many years.

1) The battery charging stops when fully charged with the charger on, thus no need for manually switching off.

2) If the battery is at zero charge, the charger is used to run the Laptop and recharge the battery.

Depends on the manufacturer when charging starts, on mine anything less than 100%. Some seem to think a 70% charge as lengthening the lifetime of their batteries.

You only need to waft the mouse pointer over the standard Windows taskbar battery Icon to see the charge %.

An AIO desktop does not have a battery. It may well have PSU looking like a charger as some may use Laptop type MOBOs, basically fitted in the monitor casing.

My Gaming HP Omen Laptop has no specific battery options in bios that I seen, but I tend to keep it charged to 80-90 percent if I remember to disconnect charger before 100 percent, battery is non removeable on that laptop so I tend to switch off using battery, and sometimes using AC power when gaming

I also have read the article referred to by Bree earlier. Since the facts in the article seems convincing, I would like to manage the battery in my brand new Acer Swift 3 as good as possible. As always there seems to be a question of pros and cons...

According to the article, if a LiPo battery is charged in cycles between ca 30 and 80 %, the battery will give twice as many charging cycles compared to 0 to 100% charging cycles. But, in that case you will only be able to use 50 % of the battery's total amount of available power at any given time.

So, the wisest maybe would be to use the battery a little bit more (than between 30 and 80 %) sometimes, and not totally drain or fully charge the battery to often? And consequently not let the AC power stay plugged in, when the battery has been fully 100% charged.

Hence, I wonder if anyone knows if its possible to use the computer with the AC- power plugged in, but WITHOUT charging the battery..? In that way it would be possible to charge the battery up to ex 70% and then tell the computer to stop charging the battery.

Then I could use my computer on AC- power, and be able to save the precious battery without having to let it be charged "by force". That would be smart, because then it would be possible to use the computer only on AC at home and only on battery when away. This is not possible now, if I don't want to "force charge" the battery (i.e. force it to be at a constant 100% charge while on AC- power).

To avoid "force charging" my battery now, I have to disconnect the AC- power supply, its ok but a bit inconvenient, and, my main concern: I have no other choice than to let the computer run on battery, even when at home. Which is a bit sad for the sake of the battery's life ...

Anyone have some secret tricks to solve the matter..?

BRG/ Örjan.