OK I checked mine and the battery is 1700 mA-h
It is a LiPo nominal 3.7 volts.
Operating current when running from external 12
volt power via switch mode supply about 300 mA
while running XCsoar (with internal battery fully charged), backlight on max.
So internally it would be taking about 850 to
950mA from the 3.7 volt battery . So a couple of
hours sounds about right from a fully charged battery.
Note the power handling of all mobile devices is
usually quite sophisticated and the device powers
down internally when the processor isn't doing
anything so not running the program or not
running it in realistic flight mode or turning
down the backlight may give a lower drain.
Note also the V2, AVier and Glider Guider devices
are AFAIK exactly the same device. Later ones had
a slightly different case. Don't know if
internals are different. Oudie is a different device.
Nowadays all gliders should tolerate one avionics
battery failure. Use two batteries and designate
a main and standby. Occasionally charge the
standby, the main after every day. Especially
important with lead acid is to charge ASAP after
flying. Don't leave it until the night before
next weeks flying. That way when the main dies,
the standby shouldn't have any cycles on it and
will get you home with everything functioning.
The put the S/B in the main position and buy a
new S/B battery. You might like to run it for one
flight to confirm it is a good one. LiPo
batteries are best stored at 40% charge. i.e.
DON'T fully charge your Avier etc until the night
before flying and DON'tT leave it connected to
the charger for too long. It should cut off
charging automatically but you never know.
Instruments with internal or dedicated S/B
batteries may sooth your paranoia further.When
engineeering systems, a certain level of paranoia is good, Murphy always lurks.
Mike
At 09:57 PM 2/03/2015, you wrote:
As i said all very interesting  the Vertica
 that i bought of Mike before the Avier has
now been running for 6 hours and is down to 16%!
I plug my units into the main batteries normally
of course but i was just interested to see for
how long after some kind of electrical problem i would still have a moving map.
I am of course old school enough to wave my WAC
chart around in order to still have  a moving map, so no smart replies please!
Ron
On 2 March 2015 at 19:18, Jenny Ganderton
<<mailto:[email protected]>[email protected]> wrote:
No way, 2.5 hours is really good for an Avier. I
always plug mine into the main
Glider battery via a 12v to 5v usb converter.
BR Jenny
----------
From:"Ron Sanders" <<mailto:[email protected]>[email protected]>
Date:Mon, Mar 2, 2015 at 18:28
Subject:[Aus-soaring] Avier, oudie,vertica stuff
Guys, I am running a moving map ap (LK8000) on
an Avier device. I am only getting 2.5 hours out
of a battery. I Â remember reading sometime back
when i had the paper work that i should get 12
or more out of the internal battery. Is this right??
Thanks  Ron
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