[Nut-upsuser] Cyberpower CP850PFCLCD 120% battery charge

[Charles Lepple]

On Mar 30, 2011, at 9:53 PM, Justin Ellison wrote:

> Tue Mar 29 23:31:14 CDT 2011
> battery.charge: 81
> battery.charge.low: 10
> battery.charge.warning: 20
> battery.mfr.date: CPS
> battery.runtime: 283
> battery.runtime.low: 300

Not sure about the 120% charge issue.

The UPS decides when to signal a "low battery" condition, and at this  
point in the logs, the UPS's estimation of remaining runtime has  
dropped below the limit. I'd guess that the LB flag is set when either  
the runtime or the charge goes below its limit.

You should[*] be able to use upsrw to adjust "battery.runtime.low",  
but be sure to account for the amount of time needed to sync  
filesystems and kill processes.

[*] Both "battery.runtime.low" and "battery.charge.low" are flagged as  
writable by the driver, but the actual result depends on the UPS  
firmware.