Fix Alert System Battery Voltage is Low Error Message

RECOMMENDED: Click here to fix Windows errors and optimize system performance

A lot of people have been talking about new machines lately. Usually, the small battery on the motherboard does not run out for several years, but because there are so many reports of this problem on new systems, it seems that Dell may have had a charge of bad batteries.

As you know, the BIOS runs in the background when the device is started or restarted. This is an interface that starts the boot programs and the current Windows system. So, if the BIOS software does not work properly, you get boot problems and other major malfunctions. Therefore, the error “The system battery voltage is low” is indicated by this special interface, which indicates a problem with a hardware component connected to the motherboard.

In most cases, the author is the BIOS battery that needs to be replaced. Yes, the BIOS operates on a special battery connected to the motherboard, which means that replacing the BIOS may require some technical experience with the hardware. Otherwise, I recommend that you bring your device to the after-sales service and ask for technical assistance.

However, there are situations where the BIOS battery is not the real problem. Before considering replacing this hardware component, try the following troubleshooting methods.

How to Fix Alert, System Battery Voltage is Low Error Message:

There does not seem to be a single solution to the error message “Alert, system battery voltage is low” that you can see during the start-up process. It flashes on your computer screen and prompts the user to press F1 to continue, F2 to run the setup program, or F5 to perform the on-board diagnostic.

Essentially, there are two reasons why the alarm goes off when the battery voltage is low. These are,

  • The sensing circuit on the motherboard
  • The battery

If your Windows computer displays an Alert message, the system battery voltage is low during startup, here are some things to consider.

January 2021 Update:

We now recommend using this tool for your error. Additionally, this tool fixes common computer errors, protects you against file loss, malware, hardware failures and optimizes your PC for maximum performance. You can fix your PC problems quickly and prevent others from happening with this software:

  • Step 1 : Download PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.


Power Cycle your Device

  1. Disconnect all cables, including the power cord, from the PC.
  2. Press and hold the power button for about 10 seconds.
  3. Reconnect the cables and check if the error persists.
  4. If the message still appears, ask a technician to disconnect all cables from the PC, open the PC, remove the button battery from the PC and press the power buttons for 10 seconds.
  5. Replace the battery, reconnect the cables and restart the computer.

Replacing the batteries

If the error persists even after the battery has been replaced, it is likely that the battery will have to be replaced. Make sure you buy the right battery model for your computer – check the specifications and contact Dell Technical Support if you have any doubts.

You can access the BIOS and note your settings before changing the battery. A Dell may not have as many custom settings, but you can still check them. Depending on the user accounts, if you are not too slow to remove the old battery and insert the new one, the “filter cap” on the right can absorb enough energy to power the CMOS clock for a short period of time.

With a digital clock, the current to operate a 32768 Hz oscillator is about 2 microamperes, so the south bridge should not absorb the charge of this capacitor too quickly (the ICH5 data sheet indicates that the battery current is 6 microamperes).


Dell explains that batteries can explode if improperly installed. For this reason, you may prefer to consult a computer expert rather than perform the battery replacement procedure yourself.

RECOMMENDED: Click here to troubleshoot Windows errors and optimize system performance