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From: Terry Pinnell on 3 May 2008 11:55
What behaviour is to be expected from my iPAQ 2210 (WM 2003) when its
battery reaches the critical (10%) level causing it to shut down
please?

While running Memory-Map its battery unfortunately reached that level
after only about 3 hours into a walk I was recording (via a Bluetooth
GPS receiver). On restarting it later in its recharging cradle, I
assumed I would still have the GPS track up to that point, but no.

I thought that when a PPC closes down it was simply like switching it
off, and on restarting it all programs that were running should still
be running?

--
Terry, East Grinstead, UK
From: Thurman on 3 May 2008 13:26

"Terry Pinnell" <terrypinDELETE(a)THESEdial.pipex.com> wrote in message
news:g52p1450emo4pkp87ulsqgc6735ae7mbi2(a)4ax.com...
> I thought that when a PPC closes down it was simply like switching it
> off, and on restarting it all programs that were running should still
> be running?

On my PPC2003 devices, if they go power flat, they go dumb. There is no
data/programs left.

My Mobile 5/6 devices have 'persistent' memory.

If you want to log your trips, self contained logging GPS units are now less
than $99 USD.


From: Sven on 3 May 2008 13:51
Did you have anything left? Earlier PPCs had some level at which they went
into a 'hibernation' which should allow you to get back to a power source
and keep your current condition. This is different than the "backup battery"
which was there to allow switching batteries without creating a hard reset.
I rarely let my systems get to that point, but it is conceivable that the
items in execution RAM might be lost. Things like open Word docs, notes,
etc. might be in jeopardy.The function of the reserve shutdown was to
protect the Storage RAM, because if you lost it, the unit was like it came
from the factory, i.e a hard reset. The 2215 is a relatively old device. It
is possible that the batterry has deteriorated to the point that the length
of time the 'reserve' lasts, has decreased dramatically, as it appears the
regular capacity has.


"Terry Pinnell" <terrypinDELETE(a)THESEdial.pipex.com> wrote in message
news:g52p1450emo4pkp87ulsqgc6735ae7mbi2(a)4ax.com...
> What behaviour is to be expected from my iPAQ 2210 (WM 2003) when its
> battery reaches the critical (10%) level causing it to shut down
> please?
>
> While running Memory-Map its battery unfortunately reached that level
> after only about 3 hours into a walk I was recording (via a Bluetooth
> GPS receiver). On restarting it later in its recharging cradle, I
> assumed I would still have the GPS track up to that point, but no.
>
> I thought that when a PPC closes down it was simply like switching it
> off, and on restarting it all programs that were running should still
> be running?
>
> --
> Terry, East Grinstead, UK

From: Terry Pinnell on 4 May 2008 01:44
"Sven" <sejohannsen(a)hotmail.com> wrote:

>Did you have anything left? Earlier PPCs had some level at which they went
>into a 'hibernation' which should allow you to get back to a power source
>and keep your current condition. This is different than the "backup battery"
>which was there to allow switching batteries without creating a hard reset.
>I rarely let my systems get to that point, but it is conceivable that the
>items in execution RAM might be lost. Things like open Word docs, notes,
>etc. might be in jeopardy.The function of the reserve shutdown was to
>protect the Storage RAM, because if you lost it, the unit was like it came
>from the factory, i.e a hard reset. The 2215 is a relatively old device. It
>is possible that the batterry has deteriorated to the point that the length
>of time the 'reserve' lasts, has decreased dramatically, as it appears the
>regular capacity has.
>

No, nothing left at all.

Probably only about 15-30 mins after I'd last viewed the screen, I
took the PPC from my pocket while eating my packed lunch. I aimed to
deliberately switch it off to conserve the battery. But it was already
off.

I *assume* the usual warning had been displayed, but of course I was
unaware of it. I then tried to switch it on, as I assumed there must
be some charge left, but no, it wouldn't. That's the most surprising
aspect. Can that only be due to the backup battery having failed too?
But, with 10% of the main battery left, how could that happen? I can't
be 100% sure, but doesn't the warning itself disappear after a short
while, and - with nearly 10% left - the PPC then close down
automatically? If so, I just don't see why the BU battery could fail
so completely that it couldn't resource a brief re-start?

Anyway, I then attempted to reset using the stylus, but nothing
happened. Needless to say I was mad at myself, as I had no fewer than
two spare batteries but had hastily left home and forgotten to bring
one! I even have a newly bought 'Battery Extender', 4 x AA cells with
a cable and plug, although I'd only anticipate using that on a much
longer walk. It's quite heavy ;-)

On return home, as soon as I placed the 2210 in its cradle, the normal
Today screen was displayed. But, as described earlier, no automatic
backup from Mem-Map was present. I have yet to establish what Mem-Map
should do when closed abruptly. I have vaguely assumed that any
well-designed application should take a backup automatically. But I've
never tested this methodically for any of my PPC applications. Have
you? And, even if that's true in general, Mem-Map may not cut the
mustard - it has quite a few design flaws.

Does this behaviour square best with a poor backup battery? (I'm not
sure I agree with your implication that a 3 hour life is poor for the
main battery. I've never had much more from any of 3 batteries, 2
being 1000 mAH replacements for the original 900 mAH. Using Bluetooth
I gather is particularly hard on consumption?) If it *is* down to the
BU battery, do you think that might be fixable, or must I finally
reconcile myself to buying a new model and facing the hassle of
re-installation?

On a previous occasion, when I replaced a discharged battery during a
similar walk, all was OK. So, I will do my damndest not to forget the
spare battery in future!

--
Terry, East Grinstead, UK




>
>"Terry Pinnell" <terrypinDELETE(a)THESEdial.pipex.com> wrote in message
>news:g52p1450emo4pkp87ulsqgc6735ae7mbi2(a)4ax.com...
>> What behaviour is to be expected from my iPAQ 2210 (WM 2003) when its
>> battery reaches the critical (10%) level causing it to shut down
>> please?
>>
>> While running Memory-Map its battery unfortunately reached that level
>> after only about 3 hours into a walk I was recording (via a Bluetooth
>> GPS receiver). On restarting it later in its recharging cradle, I
>> assumed I would still have the GPS track up to that point, but no.
>>
>> I thought that when a PPC closes down it was simply like switching it
>> off, and on restarting it all programs that were running should still
>> be running?
>>
>> --
>> Terry, East Grinstead, UK
From: T Shadow on 4 May 2008 03:58
"Terry Pinnell" <terrypinDELETE(a)THESEdial.pipex.com> wrote in message
news:iahq145afkpbfssq0c0aqfnt9vl7quhor0(a)4ax.com...
> "Sven" <sejohannsen(a)hotmail.com> wrote:
>
>
> I *assume* the usual warning had been displayed, but of course I was
> unaware of it. I then tried to switch it on, as I assumed there must
> be some charge left, but no, it wouldn't. That's the most surprising
> aspect. Can that only be due to the backup battery having failed too?
> But, with 10% of the main battery left, how could that happen? I can't
> be 100% sure, but doesn't the warning itself disappear after a short
> while, and - with nearly 10% left - the PPC then close down
> automatically? If so, I just don't see why the BU battery could fail
> so completely that it couldn't resource a brief re-start?
>

The charge level is estimated from the battery voltage. As the battery ages
it's going to have less current capacity left at the trigger voltage. IOW
the monitor only works correctly with a healthy battery.

The drained power battery could pull down the backup battery faster than if
no power battery was attached. Back up just keeps it alive. It's not
supposed to run/start it.

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