Acer gaming laptop since 2020-Bypass charging-Dc mode - Battery Charge Limit.

NHT
NHT Member Posts: 12

Tinkerer

Hello everyone! I want to ask whether bypass charging, dc mode, or battery charge limit function rely on each other. Based on my knowledge, no matter the mode you are on, no matter how much battery percentages you have left by the time you plugged in the charger the system will immediately take the energy from it and completely stop taking the power from the battery which is bypass charging function, I believe this function is like a normal standard feature for almost any laptops nowadays even they are office use or heavy gaming and I believe it was always on by default or you can't even toggle it if you want to.

But some people, reviewers, and YouTubers said that even if I have plugged in the charger the system still consumes the energy from the battery until it was fully charged, they even said if I'm not turning on the charge limit the system will continue to draining and consuming energy repeatedly through battery even it was fully charged(which will heavily damage the battery). Some people say it will not take the energy directly from the charger until the battery is reached 80% and the charge limit is turned on, they think that the battery limit charge is bypassing the charging feature and need to turn on manually. I think it makes no sense if Acer built in a feature to extend the battery life but design the system by default to charge and consume the energy from the battery rapidly and repeatedly until the feature needs to be turned on by hand.

So please have me clarify this information:
+The system will mainly take the power from the charger by the second it was connected no matter what conditions, modes, or battery current capacity
+Bypass charging is always on by default and you don't need to manually activate it
+Battery charge limit has not thing to do with the bypass charging function
+The system will completely stop taking energy from the battery by the second the charger is connected and the battery will stop charging at 100% no matter whether the modes or function is activated or not.

Thank everyone, hoping for verified information from Acer's experts or even engineers.

Answers

  • Puraw
    Puraw ACE, Member Posts: 13,414 Trailblazer

    I am unfamiliar with this "bypass charging, dc mode" in mobile devices.

    I recommend disabling that ACC battery limiter option (better uninstall ACC completely in W11) and any other battery monitoring bloatware you may have installed. the theory behind "battery longevity" has not been tested and is strictly anecdotal. Moreover, disrupting or reducing battery charging interferes with Microsoft ACPI battery control protocol and UEFI; Windows11 Battery Meter and Battery Report stats are only valid after at least one full charge cycle is registered.

    When an adapter is plugged in properly in the DC jack, power supplied by the adapter goes through the battery till the battery is 100% charged then the Smart logic of the Lithium-Ion battery will stop the charging and you will be running 100% on the power adapter unless there is a power brownout or interruption. A good example of this, on this forum, is provided by users unable to power up with the power adapter plugged in because of a bad battery and as soon as the bad battery is disconnected the laptop boots OK. For this reason, to stop charging at 80% is a moot point; just leave your adapter plugged in 24/7😉