If you have an iPhone, you undoubtedly understand the value of preserving your battery. Having a phone that's always on its last legs sets you up for missed meetings, phone calls that come to unsatisfying conclusions and poor communications in general. Hopefully we can minimize this grief by presenting a few tips to preserve the life of your iPhone battery.
Maintaining an appropriate charge cycle extends the life of your battery. An iPhone battery can discharge 80 percent of its full power approximately 400 times. Keep in mind, that your battery can only be charged a finite number of times, so be sure to get the most juice every time you charge. If at all possible, avoid charging your phone for brief periods of time just to get sufficient juice to carry you through a short period. It's better to organize your life so that your phone can charge for an extended period of time. Some people charge their phones when they are sleeping or driving long distances to prevent short-duration charge cycles.
Roughly monitoring the effectiveness of your battery gives you a good idea of its relative life span. A new, fully charged iPhone 3G battery has 12 hours of talk time, 30 hours of audio playback time, 10 hours of video time and 300 hours of standby time. While maintaining an Excel spreadsheet on iPhone use is obviously overkill, knowing long your charged battery lasts before needing to be recharged helps predict how long the battery itself will last before it needs to be replaced.
Temperature also affects the duration of battery life. You might observe that your phone heats up when charging. If this occurs, make sure that you remove the case before charging. Cases trap heat unnecessarily, causing the battery to wear down faster than it would otherwise. Temperatures between 32 and 95 degrees Fahrenheit are perfect for the iPhone and the battery.
Some people charge their iPhone from a computer system, using a USB adaptor. This practice can be helpful, but make sure you computer is actually on and not in sleep mode. Trying to charge your phone when your computer is at half mast disrupts the charging cycle. Like all short charges, this cuts into the number of times that the battery can be charged.
Following these simple tips increases the life of your iPhone battery substantially, saving you money and sparing you inconvenience.