We recommend that this only be updated when the battery reaches full charge. Restart the PC and see if the device gets installed as it should have in the first place. Also please exercise your best judgment when posting in the forums–revealing personal information such as your e-mail address, telephone number, and address is not recommended. Function index 0x1 Set battery charge throttle. Click Start, and then click Control Panel. Design capacity of Low Indicates the critical battery level at which Windows must immediately shut down or hibernate before the system powers off. Please re-enable javascript to access full functionality.

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A value of 0 percent indicates battery charging should be stopped until pnp0c0x method is called again. Remember me This is not recommended for shared computers.

Must be set to a value between 0 and 5 percent of the battery design capacity. Indicates the minimum amount of remaining charge change that can be detected by the hardware between the Design Capacity of Warning and Design Capacity of Low. This must be performed immediately after the physical state change is detected by the platform. Message 3 of Battery technology Indicates if the battery is rechargeable or one-use.


Device Manager lets me Scan for Hardware Changes, and then tries to look for it.

Download Microsoft ACPI-Compliant Control Method Battery

This must be performed immediately after the state change is detected by the platform. The last full charge capacity represents the estimated amount of energy the battery is expected to hold the last time the battery was fully charged.

Proffitt Forum moderator July 25, 8: Windows 7 drivers help needed. Restart the PC and see if the device gets installed as it should have in the first place.

While I have yet to dive into the event log, it’s 5 pnp0ca old and she used the battery daily for years. This status includes such information as whether the platform is running on AC or DC power, the level of charge for each battery, and battery charging status.

One that I would not dig into.

ACPI battery and power subsystem firmware implementation

The auto install file is the 2nd one down on the left side of the page. Topics Description Windows-specific requirements Battery state Pnpc0a if the battery is currently being charged, is discharging, or is in a critical state.

Must be set to the design voltage of the battery when new in millivolts. Message 2 of Posted 11 March – Proffitt Forum moderator July 25, 7: Must be set to a value larger than 0x0. Model number OEM-provided battery model number. To use this site, you must be running Microsoft Internet Explorer 5 or later.


A battery that is neither charging accpi discharging must report neither bit. This value must update each time cycle count increases. I always hope it’s the battery or charger since those are the cheap parts. The Battery State must report charging only if the battery is charging. Sorry, there was a problem flagging this post.

Windows OS-specific battery control methods Windows provides a detailed view of system batteries in the desktop tray application. Let’s hope it works. Power unit Determines if the units reported by the hardware are milliamps and milliamp-hours or milliwatts and milliwatt-hours. Didn’t find what you were looking for? My problem is that I don’t know in which directory to look it cannot find it by itself.