So what exactly is RESERVE BATTERY LEVEL(IN %) in Dell ALIENWARE Laptop?

Question

So what exactly is RESERVE BATTERY LEVEL(IN %) in Dell ALIENWARE Laptop?

RESERVE BATTERY LEVEL (RBL)

WHAT is RESERVE BATTERY LEVEL?
Please follow with the series of screenshots for explanation

Screenshot O1
Link - https://i.sstatic.net/LC4mO.png

The screenshot shows selection of given % level of the RBL. The % level can be increased up to 100%

Screenshot O2
Link - https://i.sstatic.net/yIBCB.png

The % level can be increased up to 100%

And What is RBL?
Is RBL related to Battery Consumption? Or is a state to contain some battery charge for Critical Battery Situations?

Screenshot O3
Link - https://i.sstatic.net/jsi1R.png

A processor in a computer running Windows has two different modes: USER MODE / KERNEL MODE
The processor switches between the two modes depending on what type of code is running on the processor. Applications run in user mode, and core operating system components run in kernel mode. While many drivers run in kernel mode, some drivers may run in user mode.
Source - https://docs.microsoft.com/en-us/windows-hardware/drivers/gettingstarted/user-mode-and-kernel-mode

To understand this, I have created a MONKEY - BANANA THEORY

The KERNAL is a computer program at the core of a computer's operating system with complete control over everything in the system. The code in memory files is always in running state, and we take Memory Files as Bananas and the KERNAL as Monkey.

As long as Monkey is eating Bananas - The Stomach of Monkey is working properly. Once the Bananas are not provided to the Monkey then his stomach gets really upset. If the Monkey is fed Bananas in less time than the condition of Monkey is CRITICAL which means that the memory files being processed during a short duration will need some minimum amount of power supply to keep the Monkey**/ KERNEL** Critical Health Running.

The Bananas has its Weight (Protected area of memory) -

And what is KERNEL Space?
KERNEL Space is where the KERNEL executes and provides its services. This Memory Space needs power supply to be under production,

Relation between Reserve Battery Level and System Crashes
Reserve Battery Level was created to avoid System Crashes.

A System Crash is the situation in which a program, either a user application or a part of the operating system, stops performing its expected function(s) and responding to other parts of the system. The program might appear to the user to freeze. If such program is critical to the operation of the kernel, the entire computer could stall or shut down.
Source - http://www.linfo.org/kernel.html

What is I/O Input/Output service is performed by the KERNEL.
I/O is any program, operation or device that transfers data to or from a CPU and to or from a peripheral device (Hard Disk).

Is RESERVE BATTERY LEVEL the Memory Space provided in the KERNEL?
But Why % level of RBL?

Screenshot O4
Link - https://i.sstatic.net/BtXkR.png

Why there is no proper information related to this Topic? I suggest more understanding w.r.t RBL.

Strobe

Answer 1

Reserve battery level is quite simply a battery level where Windows will give you an alert that your battery is about to run out. It is very similar to the low battery level and the critical battery level. The only difference is that you can set the low battery level and the critical battery level to trigger power events such as standby or hibernation, whereas the reserve battery level only gives you a warning.

Generally (or at least the way I know it), the low battery is the highest level, for example 20%, the reserve battery level is the middle level, for example 10%, and the critical battery level is the lowest level, for example 5%. That way, you first get a warning at 20% (low battery), then again at 10% (reserve battery level - as in a reserve for you to wrap up what you're doing), and then at 5% you can set it to hibernate, for example. AFAIK, it has nothing to do with memory reserves or anything like that, and it definitely shouldn't have anything to do with system crashes (unless you have a faulty battery, but that's another can of worms and doesn't have anything to do with the reserve battery level).

In fact, you have the exact same options in the Windows power settings.