Re: [gpm] Unexpectedly low battery life

["simon zheng sun com" <Simon Zheng Sun COM>]

Sorry! Should be "battery.charge_level.design" rather than
"battery.reporting.design".

capacity
= battery.charge_level.last_full / battery.charge_level.last_full.design

My battery is even lower, 37%. Too bad.:(

-Simon

On Fri, 2008-05-16 at 13:18 +0800, simon zheng sun com wrote:
> Steve,
> 
> Low-level HAL supplies two properties.
> 
> 1. battery.charge_level.last_full (int)  
> 
> The maximum level of charge the device could hold the last time it was
> full. Measured in "battery.charge_level.unit" units.
> 
> 2. battery.reporting.design (int)  
> 
> The maximum level of charge the device was designed for, as reported by
> the hardware. Measured in "battery.reporting.unit" units. 
> 
> In GPM, 
> capacity = battery.charge_level.last_full/battery.reporting.design.
> 
> So lower capacity means your poorer battery performance. Value is
> decided by battery hardware itself. I think this info is very useful.
> 
> -Simon
> 
> 
> On Thu, 2008-05-15 at 22:44 +0100, Stephen Brandwood wrote:
> > Hi,
> > 
> > I've noticed a large drop in battery life performance since I switched
> > from Ubuntu 7.10 to a fresh install of Ubuntu 8.04 (both 32 bit and 64
> > bit versions). The Power Manager tool has highlighted a massive problem
> > with the battery capacity being capped at 59% (full stats are below). 
> > 
> > How is this number calculated? Is it possible something deep inside the
> > OS is misreading the charge of my battery? The loss of capacity somewhat
> > correlates with the drop in performance I have observed.
> > 
> > Thanks,
> > Steve
> >  
> > Battery details after a full charge:
> > Product: DELLUD2606
> > Percentage Charge: 99%
> > Vendor: Sanyo
> > Technology: Lithium ion
> > Model: DELLUD2606
> > Capacity: 59% (Poor)
> > Current Charge: 56.8 Wh
> > Last full charge: 56.8 Wh
> > Design charge: 95.5 Wh
> > Charge rate: 33.0 W
> > 
> > _______________________________________________
> > gnome-power-manager-list mailing list
> > gnome-power-manager-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gnome-power-manager-list
> 
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