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Date: Mon, 30 Jun 2014 07:37:38 -0400
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From: Tim Olson <Tim@MyRV10.com>
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Subject: Re: [LML] Re: IPAD Solution
References: <list-6956633@logan.com>
In-Reply-To: <list-6956633@logan.com>

I've bought a bunch of Scosche mini style dual USB chargers that do 2 x 2.1a=
 that work well for keeping iPads charging in flight when you need.  If you u=
se them with an iphone it's a quick charger too.
Tim

> On Jun 29, 2014, at 2:42 PM, Tom Thibault <tom@lachollatech.com> wrote:
>=20
> I am another Ipad in-flight user and am very happy with it.  As others hav=
e said, keep it out of DIRECT sunlight.  With the WIFI turned on (required f=
or my ADS-B receiver) it does drain the battery faster.
>=20
> I researched the literature quite a lot about re-charging and there was a l=
ot of grumbling from non-aviation users of IPad 3 (and newer) when they firs=
t came out.   Those people complained that the IPad would no longer charge f=
rom a wall charger while being used heavily, and it would never re-charge if=
 plugged into a computer's USB port. The complainers were correct.   BTW a c=
omputer's USB port is limited to .5 amp by the USB standard.  The response f=
rom Apple was that the newer models use significantly more power than prior v=
ersions.  So much more that the Apple standard 10 Watt (~2.1 amps at ~5 volt=
s) wall chargers deliver about the same power back to the unit for re-charge=
 as it is consuming when WIFI is on and the screen is bright etc, etc.  Appl=
e technical people said that a unit with a low state of charge will not re-c=
harge while in heavy use from a wall charger or auto charger.  In order to r=
echarge, the heavy consumption of power must be removed until re-charge is c=
omplete. Just closing the lid does that, or the short push of the power butt=
on.
>=20
> So, the upshot for us is, IPad 3 and newer won't really re-charge at all i=
n-flight, but consumption of the battery should be greatly reduced if we use=
 the right charger.
>=20
> All in all, I can fly two four hour legs and the battery is not excessivel=
y  drained, if I plug it into the cigarette lighter with a quality 10 Watt a=
uto charger.  These are 2.1 amp at 5 Volt output. There are dual chargers ou=
t there advertising 15 Watts but most are one outlet at 2.1 amps and one at 1=
.1 amps.  The lower output connection is appropriate for phones or other sma=
ll devices.  The IPad 3 itself won't consume more than 2.1 amps anyway, so m=
ore would not help.
>=20
>=20
>=20
> --
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