On the MPower and Apex, the battery low warnings start popping up when the
BN's battery hits what the gauge reckons is 10%. On the MPower, this figure
is based on the nominal available charge as a percentage of the battery's
capacity as measured by the last time you recalibrated it. So if, for
example the last time the gauge was calibrated you used the WIFI heaps, but
usually you don't, you're going to get a lot of battery low warnings if you
use an MPower. If you really want to know just how low (or not) the battery
is on an MPower, then you want to have alook at the voltage (support
information mode and V). I usually start thinking about plugging in the
charger once the voltage starts creeping down below about 7.1 or so...
recalibration voltage is 7 and critical voltage is 6.85, switch-offf is 6.5.
On the Apex, we can't see the voltage any more, something to do with it
using different battery technology. the battery low warnings will be
displayed based on the percent I think, until the unit hits 4%. After that,
the gap between the last battery low and first battery critical will very
depending on how similar or different this battery cycle was to the one
where it was last calibrated. This conveniently ensures you will have
precisely 3 battery critical warnings before the unit dies, and also
prevents it from happily working while telling you it has 0% battery like
theMPower did..
Just what I have observed over years of BN use... :P
Áine
----- Original Message -----
From: "Marvin - a fellow Lister" <[email protected]>
To: "BN List" <[email protected]>
Sent: Tuesday, May 22, 2012 12:25 PM
Subject: [Braillenote] Battery Callibration
I've discovered something that might be of interest, and it would make
dealing with the battery a little easier. I'm not sure if the apex has
this problem, but my mPower was doing this thing where I'd be using it on
battery for a good while, and then it would suddddenly start saying
"battery is low". It wasn't true though. It would still take about four
hours after that for the unit to die. I tried callibrating even though
the gauge said it was perfectly accurate, and that fixed it, I think. I'm
going to use it off of AC power til it dies and see if it starts giving a
too early low battery warning. If things work as they should, this is a
useful post for anyone else who experiences the same thing I have. I'll
post sometime tomorrow and let you all know if the seemingly unnecessary
battery callibration fixed the issue.
----------------
Marvin Vasquez
Google Talk/Keychat ID: [email protected]
Skype: marvintva2010
----------------
"Only when the last tree has died and the last river has been poisoned
and the last fish has been caught will we realize that we can not eat
money."
19th Century Native American
----------------
www.braillenoteusers.info, a website created and maintained by fellow BN
List members, where you'll find information on getting the most out of
your BrailleNote, and even some utilities and podcasts
----------------
Email sent from my BrailleNote mPower BT running Keysoft version 8
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