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Maximize iPhone Battery Life the Right Way! Get Digital Battery Indicator for iPhone and Save your Battery!

7 August 2008 1,732 views 9 Comments

Any iPhone user will definitely use the iPhone not just as a phone but  alot more – games included. And with more openGL 3D applications to play with, iPhone’s battery life is seriously taking a big hit. Just imagine using your iPhone on a train journey with all those GPS, Location aware features, games, internet and a lot more.

The idea is to conserve the battery charge rather than use a 3rd party add-on which might cost like $100! While we all know the basics of conserving iPhone’s battery, let me list them here :

Monitor battery usage for each app using iPhone’s hidden Numerical Battery Indicator

  • Apple introduced this hidden feature (Numerical Battery Indicator) in iPhone 2.0 firmware. All we have to do is enable it using BossPrefs to change the concerned plist file. BossPrefs tool is a nifty little tool to achieve enhanced productivity the Graphical way! You have to use Pwnage to jailbreak your iPhone and install BossPrefs app in Cydia.
  • All you have to do is monitor the battery charge as you use your favorite apps (which you use for longer periods and more frequently). This way you can save your much needed battery by choosing the right app to whale away your time with :)

Turn Bluetooth/WiFi/3G off unless really required

  • That makes complete sense. WiFi / 3G or any radio (bluetooth, IR) generally tends to drain power. Use them with caution! Efficient usage of these radios may help you achieve better battery.

Display brightness

  • Though auto brightness is on by default, you might want to play around with the display brightness slider given that it plays a major role in deciding how much juice your battery can hold and for how long!

Auto lock Your iPhone

  • 1 minute is the best but don’t pull your hair if you are performing SSH related tasks on your computer/iPhone, you must then set it to ‘Never’.

iPhone battery Charge cycle

  • Well, time and again it was told that Li ion batteries just don’t care how much they are charged not requiring a full charge cycle but it is always a good practice to wait for the battery to die completely reach the threshold level 10~20%(red indicator) (thanks Dizzy and David) and then recharge it.
  • It is also a good idea to recalibrate your iPhone battery every few weeks. All you have to do is let your iPhone run out of battery charge completely and then charge it fully. You now know what to do at home, play lots of games on your iPhone and then leave it to charge :)

mail.app Fetch Cycle for Email

  • If you choose a fetch cycle of 15 minutes, the battery drains power at the same rate. Your best bet is to go ‘Push’ (MobileMe or Exchange). Forward your Email (Google, Yahoo,….) and expereince Me.com for a battery savings push alternative!

Use your headphone for listening to music, watching movies

  • Well, this is not even a tip, more like common sense. Ignore it completely as we all know how to enjoy the stuff on the iPhone.
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9 Comments »

  • dizzy said:

    “iPhone battery Charge cycle”
    It’s not always a good idea to do this actually. If you do it all the time it can actually damage the battery draining it all the way down before charging. Although doing it like once a month or every 2 months is good to make sure it keeps its calibration.

    I’m going to be picking up a mophie juice pack 3g (http://whenwillapple.com/saywhy/2008/08/03/mophie-juice-pack-for-iphone-3g-pre-order-back-up/) when they come out (I actually already have it on pre-order) for the reason that even doing all the tips you listed, there is just too much fun stuff to do with the iPhone!

  • David said:

    hey kiran,
    very nice tips on conserving battery on the iphone…
    i also agree with dizzy on not completely letting the phone die out and THEN recharging. i think charging it after the 10% threshold is a good idea. atleast that is what i have been doing so far.
    thanks.

  • kiran (author) said:

    Hi David and Dizzy : Yeah , I totally agree on the battery threshold charge trick. Its better to charge it when it hits the 10~20% level rather :) I have been using the iPhone such and had no issues with the battery whatsoever!

    Thanks for your tip guys :)

  • Daniel said:

    “Apple introduced this hidden feature (Numerical Battery Indicator) in iPhone 2.0 firmware. All we have to do is enable it using BossPrefs to change the concerned plist file. BossPrefs tool is a nifty little tool to achieve enhanced productivity the Graphical way! You have to use Pwnage to jailbreak your iPhone and install BossPrefs app in Cydia.”

    This is just plain wrong – this was also already possible in 1.0.2 where did you get that info from ?

    And what is that about Push saves battery? You cant drain it faster – data connection always have to be present- push is nothing else but an always open TCP connection … jeeeess try to check what you write first please.

  • kiran (author) said:

    Daniel : Numerical battery in 1.0.2? Pl confirm such that I can update the article. Thank you..

  • adi said:

    thanks for the numeric battery tip.been looking for the answer to that for ages.everyone makes it out so comlicated,it isnt.
    nice 1

  • david said:

    yea, thanks kiran. i dled biggboss prefs and enabled the number battery. but now it just shows the number without the battery. isnt it possible to view it like the have in laptop PCs? lol im pushing it arent i?… well i just want to know if that is possible.

  • kiran (author) said:

    Hey David : The best you can do is tap the number once to see the battery and tap again to see the number! Both are not possible yet!

  • david said:

    oh cool. atleast both are there, thats good enuf for me.
    btw kiran, i have the leopard os on my pc which is running windows. the format of the file is dmg and i dont know any way of burning that image onto a cd using windows. do you know of a prog that would do it? poweriso or some other?

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