System behavior: Battery driver for Windows CE

In the event of a power failure the UPS automatically switches to battery operation. The device switches off after it has been running in battery mode for a configurable maximum time.

The maximum time for battery operation is set to 180 seconds by default. This time is configurable via a Windows registry entry.

Start the Registry Editor and search for the following key:

 
HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Battery\Config\
 

Search for the following value:

 
ShutdownOnBatteryWait REG_DWORD 0x000000b4 (180)
 

The time is specified in seconds. Permitted range: <0..16200> seconds (corresponds to 270 minutes).

If the value is set, for example, to 0 the shutdown commences immediately in the event of a power failure. The device switches off after a maximum of 20 seconds.