What is compbatt?

The genuine compbatt.sys file is a software component of Microsoft Windows Operating System by Microsoft.
Compbatt.sys is Microsoft Windows composite battery system driver file. This driver belongs to Microsoft® Windows® Operating System and is developed by the Microsoft Corporation company. File version information describes this process as the Composite Battery Driver and is loaded from directory C:\Windows\System32\DRIVERS

CompBatt stands for Composite Battery Driver

Compbatt.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if compbatt.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for compbatt drivers in need of updating

Compbatt.sys file information

The process known as Composite Battery Driver belongs to software Microsoft Windows Operating System by Microsoft (

Description: Compbatt.sys is not essential for the Windows OS and causes relatively few problems. The compbatt.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 19,024 bytes (40% of all occurrences), 9,344 bytes, 18,280 bytes or 10,240 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. The compbatt.sys file is a trustworthy file from Microsoft. The service has no detailed description. The file has a digital signature. Compbatt.sys is not a Windows core file. compbatt.sys appears to be a compressed file. Therefore the technical security rating is 11% dangerous, however you should also read the user reviews.

Uninstalling this variant: If problems with Microsoft Windows come up, you could also do the following:

Recommended: Identify compbatt.sys related errors

Important: Some malware disguises itself as compbatt.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the compbatt.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Microsoft Windows composite battery system driver file.
Not sure if it is a battery driver or more... Either battery driver or important driver for filesystem...

Summary: Average user rating of compbatt.sys: based on 2 votes with 2 user comments. 2 users think compbatt.sys is essential for Windows or an installed application.

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Best practices for resolving compbatt issues

A clean and tidy computer is the key requirement for avoiding problems with compbatt. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the compbatt.sys process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

compbatt.sys [all]