“Ten percent battery remaining!” Arrghhhh!

That warning strikes fear into the hearts of many iPhone users. A dead battery can be frustrating, especially if you’re not near an outlet or find yourself without an extra cord. Here are nine ways to increase the battery life on your iPhone.

(Image Source: GeekAdda.com)

#1 Kill the Apps - Since iOS 4, iPhone users have had the opportunity to run numerous apps simultaneously while using the phone features. The downside? Apps run continuously unless they are closed. Double click your home button, hold down the icon of the app you’d like to close, then click the X button to close it completely.

#2 Turn off Push Data - With the Push feature, email and messages are being pushed from the server to your phone immediately, using valuable battery life in the process. To turn off the push feature, click settings -> Mail, Contacts, Calendars ->Slide “Push” to the off position.

#3 The Auto-Brightness – This feature automatically adjusts the screen for brightness according to the light conditions where you are using your device. Turning this feature on will keep your screen brightness low when you’re in a dark area, using less battery. To turn on Auto-Brightness, click settings -> Brightness -> Slide “Auto-Brightness” to the On position – and while you’re on this screen, adjust your screen brightness to the lowest level you can while retaining readability.

#4 Turn off Wi-Fi - Wi-Fi can help your iPhone connect much faster than 3G or a network connection, but only if you’re near a hotspot. If you’re away from a hotspot, your Wi-Fi will be draining battery searching for a signal. Unless you’re connecting to a Wi-Fi hotspot, turn off your Wi-Fi. Click settings -> Wi-Fi -> Slide “Wi-Fi” to the off position.

# 5Turn Auto- Lock to one minute – The iPhone automatically turns off the screen when it locks to conserve battery, but the longer your phone is unlocked, the more battery life is draining to keep your screen lit. Turn your Auto-Lock feature to one minute to save the most battery life. Click settings -> General -> Auto-Lock -> One Minute.

#6 Turn off Vibrate - Is your iPhone buzzing off the hook? When you receive tons of notifications and calls and have the vibrate feature on your phone activated, your phone is required to use more power to make it shake. Turning Vibrate off can save a bit of battery drainage. Click settings -> Sounds -> Slide Vibrate to “Off”.

#7 Turn off Equalizer - Audiophiles appreciate the ability to adjust the iPhone’s music equalizer depending on the type of music they’re listening to, but the equalizer is really hard on battery life. If you’re conserving power, turn off the equalizer and listen to your tunes the “old fashioned way”. Click settings -> Music -> Slide equalizer to the Off position.

#8 Disable Location Services - Location services allow apps like camera, maps, and Twitter to find out where you are. Location services also help applications and web advertisers to serve up location-specific content, as well as find locations near you for apps like Foursquare and Yelp. The constant searching for Wi-Fi and GPS signals, however, can wreak havoc on your battery. You can turn your location services off for all applications or for individual apps, especially for those that don’t provide any value added services by knowing your location. To access Location services, click settings -> Location Services -> slide Location Services to the off position.

#9 Disable Notifications - The more active you are on various apps, the more notification you’ve no doubt cleared from your notifications bar. While some may be useful, others you can live without – and should, because the more notifications you receive, the more battery life you’re pulling out of the reserves. Disabling notifications can be tedious, as Apple requires you to disable each app individually, but it can save you major headaches. Click settings -> Notifications -> scroll down to Notification Center and slide notifications to “off”.

Written by Steven Taylor. Edited by Aritra Roy.

Steven Taylor reviews different phone products. He’s currently freaking out about the new iPhone 5.