Revive Freerunner with USB power?

[William Kenworthy]

I am well aware of this.  The point I am trying to make is WHY does the
FR discharge in just a few hours when not being used, when at other
times will run for much longer.

BillK



On Thu, 2008-09-11 at 21:39 +0530, Edgar D' Souza wrote:
> On Thu, Sep 11, 2008 at 6:42 PM, William Kenworthy <billk at iinet.net.au> wrote:
> > 1 out of every 3 or so nights, I wake up (~6-8hrs) and find the FR
> > dead. :(  Only GSM is running and its on dim&lock
> >
> > The battery is always fully charged when checked just before I retire.
> >
> > In some cases I have left it on charge, confirmed its charging and still
> > wake to a dead phone.
> 
> Perhaps the thread at
> http://lists.openmoko.org/nabble.html#nabble-td840534|a840534 would
> prove informative to you? If your battery is fully charged/almost full
> before you head for bed, then it is possible that it reaches a
> fully-charged state and begins to discharge soon after... which means
> that it has ?8? hours (dunno how long you sleep :) ) to discharge;
> while I have read estimates of battery life being around 8 hours, it
> may be less if you have WiFi, GPS, BT *and* GSM switched on... even if
> you have a superb GSM signal in your bedroom, possibly WiFi and GPS
> could have bad reception, causing even more power usage.
> 
> I'm no software guru at all, but the import of bug reports and mails
> on this list seem to indicate (correct me if I'm wrong, please,
> people!) that the logic of whether to switch the charging circuit on
> is determined:
> a) on boot
> b) on detecting plug-in of a power source to the USB connector
> 
> A third case should probably be added - if battery voltage (or charge
> percentage) drops below a specified number, check if the USB power
> source is still connected; if so, flip it on again, and let the
> battery charge.
> 
> This, of course, is assuming I have the problem description correct :-)
> 
> Cheers,
> Ed.
-- 
William Kenworthy <billk at iinet.net.au>
Home in Perth!