Or plug into your car charger and you can run forever.  

On Oct 25, 2010, at 6:00 AM, "Lancair" <lancair-esp@ustek.com> wrote:

>
> I have heard quite a few pilots opting for the paperless chart options
> using the iPad or other e-book tools.  Below are some suggestions that
> could keep the units up and running during a dark and stormy night
> instrument approach:
>
> 10 Tips to Conserve iPad Battery Life
>
> Apple claims a pretty impressive battery life for the iPad
> <http://ipod.about.com/od/productreviews/fr/apple-ipad-review.htm>  - up
> to 10 hours of use on a full charge. But that doesn't mean you won't
> want to find ways to squeeze even more life out of it, or that you won't
> have emergencies where you need to sacrifice some features to use the
> device a little longer. For those situations, here are ten tips on
> conversing iPad battery life.
>
> 1. Turn Off WiFi
> Keeping your WiFi connection enabled drains battery, whether you're
> connected to the Internet or not. So, if you're not connected - and
> don't plan to be for a while - you can conserve the iPad's battery by
> turning off WiFi. Do this by tapping Settings -> Network -> WiFi -> and
> moving the slider to "off".
>
> 2. Turn Off 3G
> Only some iPad models
> <http://ipod.about.com/od/beforeyoubuy/a/ipad-model-price-comparison.htm
>> have a 3G
> <http://ipod.about.com/od/iphonesoftwareterms/g/3g-definition.htm>  data
> connection built in, but those that do run down their batteries when
> using the always-on Internet connection 3G provides. If you don't need
> to connect to the web, or need to conserve battery more than you need to
> connect, turn off 3G. Do this by tapping the Settings app -> General ->
> Network and then sliding 3G to "off".
>
> 3. Turn Off Bluetooth
> You may be getting the idea by now that wireless networking of any kind
> drains battery. It's true, so another way to save battery life is to
> turn offBluetooth
> <http://ipod.about.com/od/ipodiphonehardwareterms/g/bluetooth_def.htm> .
> Bluetooth networking is used to connect devices like keyboards,
> speakers, and headphones to the iPad. If you're not planning to connect
> to any of those, turn Bluetooth off. Do so via Settings -> General ->
> Bluetooth -> and moving the slider to "off".
>
> 4. Turn Off Data Push
> This feature automatically pushes data like email from the web to your
> iPad when it's connected to the Internet. Since wireless networking
> always costs battery life, if you're not going to use this feature, turn
> it off. You'll need to set your email to check periodically (if you want
> to get email on your iPad, that is), but that's often a good trade for
> improved battery life. Turn this feature off via Settings -> Mail,
> Contacts, Calendars -> Fetch New Data -> and move the "Push" slider to
> "off".
>
> 5. Fetch Email Less Often
> If you're not using data push and want to get email, you'll need to tell
> the iPad how often it should check your email accounts. The less
> frequently you check, the battery it will be for your battery. Update
> these settings at Settings -> Mail, Contacts, Calendars -> Fetch New
> Data, and change the settings just below the Push menu.
>
> 6. Turn Off Location Services
> Another form of wireless communication the iPad employs is location
> services. This is what powers the GPS functionality of the device. If
> you don't need to use that (don't need to get directions, use a
> location-aware app like Foursquare
> <http://ipod.about.com/od/ipodtouchapps/a/foursquare-app-definition.htm>
> , etc.), turn off locations services via Settings -> Location Services
> and move the slider to "off".
>
> 7. Use Auto-Brightness
> The iPad's screen can automatically adjust to the ambient brightness of
> the room its in. Using this feature will reduce drain on the iPad
> battery because the screen will automatically dim itself in bright
> locations. Turn this one via Settings -> Brightness -> and move the
> Auto-Brightness slider to "on".
>
> 8. Reduce Screen Brightness
> The screen brightness setting controls the default brightness of the
> iPad's screen. As you might expect, the brighter your screen is, the
> more juice is required from the iPad's battery, which reduces its life.
> So, the dimmer you can keep your screen, the longer your iPad's battery
> life. Tweak this settings by Settings -> Brightness and moving the
> slider to a comfortable settings.
>
> 9. Turn Off Equalizer
> The iPod app on the iPad has a music equalizer built in that
> automatically adjust settings (bass, treble, etc.) to improve the sound
> of music. Because this is an on-the-fly calculation, though, it drains
> the iPad's battery. If you're not a high-end audiophile, you can likely
> live without this being turned on most of the time. To keep it off, go
> to Settings -> iPod -> EQ -> and set it to "off".
>
> 10. Auto-Lock Sooner
> You can determine how quickly the iPad's screen should lock when it
> hasn't been in use. The shorter the time before it locks, the less
> battery you'll use. To change this setting, go to Settings -> General ->
> Auto-Lock and choose your interval.
>
>
> <Robert M Simon.vcf>
> --
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