External power supply does not consume battery

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Guide
Jun 10, 2026

is there any ways to disable battery while ac adapter plugged in

You have to open the laptop and disconnect the battery ribbon cable at the motherboard side (small connector). This is mostly done to test the battery if a system won''t boot, if it boots with

Guide
Nov 22, 2025

GoPro Hero 10 External Power

I have a GoPro10 and an external power bank integrated into the bike frame. I am currently running on v1.2 firmware as V1.3 does not work unless you have an internal battery. On Saturday I rode out over 3 hours. The GoPro did not have a battery inside and was connected to the external power bank. All was well and recording.

Guide
May 22, 2026

Internal or external power supply for a monitor? Any difference?

The other one has a separate "power brick", so the power supply is solved externally. My question is, how much worse is the internal power supply solution, if at all? The monitors are: Samsung F24T350 vs. Samsung F24T370. As I saw, it would not differ in other specifications, but the one with internal power supply is cheaper by more than 25 euros.

Guide
Mar 16, 2026

If a laptop is on a full battery while plugged in, is your

The laptop uses ac adaptor when plugged in. Not battery. If you take a look at the battery icon when plugged in, you would see it goes to 100, then gets discharged to some level and charging back again. So the simple answer is that laptop does not use power from battery when plugged in. Battery gets charged and discharged. Does this kill battery?

Guide
Jul 09, 2025

Heavy battery drain through external display

No other heavy processes are running on the system and I only use a couple of tabs in the Browser. The MacBook is connected via HDMI and an adapter to a DELL 2.7k monitor that has its own power supply. Both monitors are on, though I am not using the screen of the MacBook (I just found no way to switch it off while keeping on the external monitor).

Guide
Jul 01, 2026

Do USB Devices Consume Laptop Battery Power? Explore Their

Yes, USB devices can consume laptop battery power. Motorized devices, like external hard drives or printers, use more power. In contrast, USB peripherals like mice and keyboards consume little energy and do not significantly impact performance. However, using multiple high-power devices can increase battery drain while you are mobile.

Guide
Oct 20, 2025

Blink Doorbell and External Power : r/blinkcameras

Some other cameras in the Blink range have the option for an external USB power supply (or a solar panel). It states External power but it is actually using battery to operating. But if you tired of changing battery often, you can feed doorbel with a DC adapter (3-3.5 volt). Reply reply

Guide
Jan 24, 2026

if a laptop is plugged into a power source is it running with ac power

When you have a power supply, it needs to provide the correct voltage. If there is enough current it will run the computer. If there is more current available then the computer

Guide
Jun 12, 2026

Is there a settings that uses only AC Power and bypass battery?

You could try removing your battery and see if that happens to your laptop too. Btw, if you use the laptop predominantly on AC power, to help reduce battery wear, set the max charge of the

Guide
Nov 06, 2025

Run laptop off AC power without charging battery

Certain laptops do have the ability to cap the battery charge. For example, my Toshiba laptop (and presumably other Toshiba models) have a utility that implements an Eco

Guide
May 17, 2026

How Much Power Does An External Hard Drive Use

Discover the power consumption of external hard drives and learn how to optimize energy usage. ensure that the USB port can supply enough power to operate the drive effectively. 5. Check SSDs consume less

Guide
Jan 09, 2026

Seestar external battery

Seestar external battery - posted in Smart Telescopes: Ive tried searching and havent seen much about this, so heres a new thread on this subject. Im looking for recommendations for an external power source for a

Guide
Sep 23, 2025

PCA9685 not using external power

Hello everyone, I am trying to drive a servo (SG90) through a PCA9685 servo driver board, so I could eventually control multiple servos using external power. I''m controlling this with an Arduino Uno R4 Wifi. The problem is: When using external power, instead of the V+ pin on the side of the PCA9685, the servo doesn''t move at all. It DOES work when I add a wire from

Guide
May 30, 2026

PSP not working on external power without battery. Why? : r/PSP

PSP works with external power when the battery is inside, but it does not even turn on without the battery. Clarification: I know that 1000 does not charge from USB port. I am using a USB-to-charging-jack cable. Query: It is my understanding that PSP should be able to work with only external power without a battery in the compartment.

Guide
Oct 03, 2025

Is battery bypass a thing on mordern laptops?

External power supply is just that - power supply. And no, you should not be constantly charging/discharging the battery, it will wear it out relatively fast. How long battery

Guide
Sep 20, 2025

Program not starting with external power supply

The topic has come up several times already here on the board, but has never been answered, so I will describe it again: I upload a simple program via USB while powering the Arduino board with an external 9V power supply. The program runs (LED connected to Pin 13 blinks). I unplug USB. The program still runs, LED continues to blink. Everything fine up to

Guide
Feb 12, 2026

is there any ways to disable battery while ac adapter plugged in

@thanes Go to Device manager, expand Batteries, highlight and right click "Microsoft ACPI-compliant control method Battery", click Properties, uninstall the driver in Driver tab, reboot the laptop and let Windows install the driver. HTH. Click on

Guide
Dec 17, 2025

Dead battery

Anything happens to that power adapter (i.e. a slight jiggle in the connection, a sudden surge in power draw from the processor, performance loss of the battery pack) and anything you haven''t saved or are actively processing (think critical updates, installations, etc.) could be severely damaged/lost from power loss (even if it''s just for a fraction of a second).

Guide
Aug 22, 2025

Does a laptop use battery when plugged in?

In summary, a laptop does consume a small amount of power from the battery while it is plugged in, but the primary power source is the external power supply. The laptop''s

Guide
Mar 25, 2026

GoPro Hero 9 external power

2nd: Here''s the low down on using an external power supply as experienced over a number of years using GoPro''s from the 2, 4, 6, 8, 9 and Fusion. Your GoPro will not run off an external power supply if you have the internal battery inside the camera. Instead your GoPro will run off the internal battery until the battery drains.

Guide
Apr 29, 2026

Using Mic Adapter and external power at the same time but without battery

I''m trying to do the same thing, run the camera with an external mic with external power, without a battery so it won''t overheat. is a kind of bug even with the latest firmware. Since according to my tests, GoPro and (especially) the mic adapter did not use common USB power supply protocol such as USB Power Delivery (USB PD) or QC, there is

Guide
Feb 22, 2026

Power supply or no? (What do you recommend?)

I need to get a external hard drive and after my research and I have it narrowed down to Seagate Expansion or Seagate Backup Plus. (3TB) The Seagate Expansion does NOT have a power supply and instead all you need is the usb. The Seagate Backup Plus DOES have the power supply that obviously requires power to run.

Guide
Feb 23, 2026

External Power Supply for Solar Garden Light

Got a solar powered garden light with white Led lights with single AA rechargeable 800mAh,1.2v battery. Will be using indoors where there is not enough light to recharge battery so I want to add an external power supply. I want to use a switched battery holder containing 2 AA 1.5 batteries. I...

Guide
Jan 14, 2026

Does A Wired Mouse Drain Laptop Battery? Myths About Power Consumption

Does a Wired Mouse Drain Laptop Battery? No, a wired mouse does not significantly drain a laptop battery. The energy consumption of a wired mouse is minimal. Wired mice receive power directly from the laptop through the USB cable. This connection allows them to operate without relying on their own battery, which means they do not contribute to

Guide
Sep 28, 2025

external monitor and power usage.

When connected to an external monitor (samsung 27''), my macbook pro 13'' battery drains quicker even though it does not supply power to the monitor. They are

Guide
Jun 08, 2026

External Power

M5Stack power circuit is designed in a way that you can use only a Li-Po battery (other than USB power) as external power source. For all other solutions you have to modify the PCB. If you look at the schematic you can see that the external 5V source could be added at several places, but in all cases you have to cut some PCB traces. The simplest

Guide
Aug 05, 2025

Ecodesign requirements — external power supplies

MAIN DOCUMENT Commission Regulation (EU) 2019/1782 of 1 October 2019 laying down ecodesign requirements for external power supplies pursuant to Directive 2009/125/EC of the European Parliament and of the Council and repealing Commission Regulation (EC) No 278/2009 (OJ L 272, 25.10.2019, pp. 95-106) RELATED DOCUMENTS Directive 2009/125/EC of the

Guide
Jul 12, 2025

External battery power supply

I''m looking for a solid external battery supply which worked for you for powering the Jetson Nano. If that helps, I''ll be connecting WiFi nano USB Adapter, RPI Camera V2, keyboard, mouse to the JNano. The one I''ve found is 3.7V one that is used in Jetbot project (Iniu external battery), but in the notes it''s written 2X external battery.

Guide
Feb 09, 2026

If a laptop is on a full battery while plugged in, is your

As the voltage drops, probably around 90% of the supply voltage, a setting is triggered that tells the power system external power is gone. In less than a few thousandths of a second, it tells a transistor somewhere to connect the battery, and life goes on.

Guide
Aug 04, 2025

Power Supply

Power Supply Architecture V1. The schematic shows the architecture of the power supply. Key points to note are that there are two BAT60A diodes, one from the 3.3V supply from the KL26/27 interface chip, and one from the external battery connector.

Guide
Aug 21, 2025

Is there a settings that uses only AC Power and bypass battery?

Btw, if you use the laptop predominantly on AC power, to help reduce battery wear, set the max charge of the battery to 80%. You can either set it in bios or set it in the laptop brand''s control center app, click on the green battery icon to select the max charge percentage levels.

Guide
Aug 17, 2025

Should You Leave Laptops Plugged Into A Constant Source Of

Leaving a device plugged in does NOT mean that you are continually providing power to the battery. The charging circuitry will only provide charge if the battery needs it. Li

Guide
Sep 03, 2025

Does a Laptop Use Battery Power When Plugged In? Myths,

No, a laptop does not use battery power when plugged in, except in certain situations. When a laptop is connected to a power source, it primarily draws power from the

Guide
Apr 14, 2026

When plugged in, does the iPhone use the battery or the external

When you''re plugged in to a power source, the iPhone will not use the battery unless for some reason you are using more power than the charging source can provide. Normally, unless some process is hitting the CPU and GPU and all radios (such as a GPS mapping app), even a computer USB port at 500 mA will both power your games/apps and charge your battery at the

Guide
Jun 16, 2026

Can''t run the camera off an external power with no battery? Why not?

If I was not running the cam in water/etc I used an external battery on the 9 for prolonged use. Kept the cam cooler, working better, and didn''t need annoying battery changes or errors (which I''ve already got/ shutdown due to low battery at 37%) The GoPro requires a 5V 2.4A power supply when using external power. The GoPro will do a

Guide
Jun 25, 2026

Repeatable issue with external mic + external power supply (Hero

Here''s the issue: The official word is if you want to use an external power supply, you should pull the battery and run the camera without one. I can confirm this - it works better. Otherwise, the camera will pull power from the battery only and will shut off once the battery is depleted.

Guide
Feb 08, 2026

Powering up an ESP32 with external power

Second was to use an external voltage regulator and connect that to the 3.3V pin on the ESP board. With a battery pack connected to the voltage regulator module. Easiest way would be using buck converter to step

Guide
Sep 03, 2025

Running on internal and external battery? : r/gopro

The bypass for this is to load up the GoPro Labs Firmware and use the TUSB=1 command which tells the GoPro to bypass the power supply checking and use the external power. If your power supply really does supply enough power, all is good. If

Guide
Aug 28, 2025

I have read that running an external battery with the internal

The problem is your power supply and it''s a common issue. Most power supplies actually will output the required 5V 2.4A power that the GoPro needs, however they don''t report their output properly due to built in current protection, overcharge protection etc. So when the GoPro does a power requirement check, your power supply underreports what

6 Frequently Asked Questions about “External power supply does not consume battery”

Does a laptop use battery power when plugged in?

No, a laptop does not use battery power when plugged in, except in certain situations. When a laptop is connected to a power source, it primarily draws power from the electrical outlet. However, it may occasionally use battery power for a few reasons, such as during temporary interruptions in the power supply or when it is in a power-saving mode.

Why does my laptop not use battery when plugged in?

The laptop uses ac adaptor when plugged in. Not battery. If you take a look at the battery icon when plugged in, you would see it goes to 100, then gets discharged to some level and charging back again. So the simple answer is that laptop does not use power from battery when plugged in. Battery gets charged and discharged. Does this kill battery?

How does a laptop charge a battery?

A laptop uses power from the wall outlet when plugged in. It charges the battery while connected. The laptop operates on AC power when the battery is fully charged. It does not consume battery power in this mode, except during a power interruption. Battery health is another vital aspect. Modern laptops are designed with smart charging technology.

Why does my laptop use battery power?

When a laptop is connected to a power source, it primarily draws power from the electrical outlet. However, it may occasionally use battery power for a few reasons, such as during temporary interruptions in the power supply or when it is in a power-saving mode. This is designed to ensure that the laptop continues functioning without interruption.

What's the difference between battery charger and external power supply?

im using the charger from from microsoft, that came with the surface. With cycling i meant, that i charge to 80%, disconect the charger and then use it normaly down to 10% and then start charging again. Battery charger is actually inside the laptop/tablet. External power supply is just that - power supply.

Should a laptop be plugged into a power source?

Laptops benefit from being plugged in for extended periods. Keeping a laptop plugged into a power source can offer improved performance. High-performance tasks, like gaming or video editing, need the laptop to receive maximum power.

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