Uninterruptible power supply charging Threshold

NTDEV
1

I heard that most Uninterruptible power supply charging Threshold is 95%,
that is to say UPS began to charging until it’s remain capacity is low than 95%.
So it is difficult to judge whether the battery is charging
when the system has access to AC and it’s remain capacity is between 95% and 100%.
You must know the remain capacity the moment you access to AC is more or low than 95%.

According to msdn doc,Win32_Battery Class property “BatteryStatus” may help to judge.
But in my system,“BatteryStatus” is always “2” when the system has access to AC,
whether the battery is charging or not.

Can this mean that the system level that get Win32_Battery Class property in my system is not perfect?

Any other method to judge whether the battery is charging
when the system has access to AC and it’s remain capacity is between 95% and 100%?

Any help is appreciated.Thanks.

Best Regards
Zhou ChengJun

2

> when the system has access to AC and it’s remain capacity is between 95% and 100%.

There is actually no such thing as capacity. There is such thing as battery voltage, and many UPS tools allow you to tweak the “voltage of being 100% charged” manually.

If such tweaking is not allowed - then there is some “100% charge voltage” value hardcoded in the driver.

–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com

3

3ks

There is actually no such thing as capacity.

I mean Win32_Battery Class property “EstimatedChargeRemaining”

Best Regards
Zhou Chengjun