School owned iPads should be charged only using the supplied Apple 12W USB Power Adapter (see below) and appropriate USB cable (either Apple 30-pin or Lightning). Use of other chargers may void the warranty of the device.
The first evening with the device (or with a replacement), you will need to charge the iPad for a full 12 hours. Subsequent evenings will only need a few hours to complete a full charge. Students can charge their iPad on campus, but available power outlets are scarce. Outlets are provided in the Matthews Library for student use.
The iPad needs to be fully charged before bringing to campus each school day.
You may charge the a school iPad with an Apple iPhone Power Adapter (5W), but it will take much longer to charge. Some computers will also permit charging through built-in USB ports, but this is not guaranteed.
We recommend that families designate a location in the house as a “charge station”. Good locations are near the entrance to the garage/front door or in the kitchen. Charging locations outside the student’s bedroom will hopefully lead to restful evenings.
NOTE: If you use the supplied 12W power adapter to charge an iPhone it may damage the phone. The increased wattage will charge the iPhone faster, but may damage the battery for future charging.
Keep it away from extreme temperatures.
Your device is designed to perform well in a wide range of temperatures, with 62° to
72° F (16° to 22° C) as the ideal comfort zone. It’s especially important to avoid exposing your device to temperatures higher than 95° F (35° C), which can permanently damage battery capacity. That is, your battery won’t power your device as long on a given charge. Charging the device in high temperatures can damage it further. Even storing a battery in a hot environment can damage it irreversibly. When using your device in a very cold environment, you may notice a decrease in battery life, but this condition is temporary. Once the battery’s temperature returns to its normal operating range, its performance will return to normal as well.
iPhone, iPad, and iPod Comfort zone
iPhone, iPad, and iPod work best at 32° to 95° F (0° to 35° C). Storage temperature: -4° to 113° F (-20° to 45° C).
Remove certain cases during charging.
Charging your device when it’s inside certain styles of cases may generate excess heat, which can affect battery capacity. If you notice that your device gets hot when you charge it, take it out of its case first.
Store it half-charged when you store it long term.
If you want to store your device long term, two key factors will affect the overall health of your battery: the environmental temperature and the percentage of charge on the battery when it’s powered down for storage. Therefore, we recommend the following:
- Do not fully charge or fully discharge your device’s battery — charge it to around 50%. If you store a device when its battery is fully discharged, the battery could fall into a deep discharge state, which renders it incapable of holding a charge. Conversely, if you store it fully charged for an extended period of time, the battery may lose some capacity, leading to shorter battery life.
- Power down the device to avoid additional battery use.
- Place your device in a cool, moisture-free environment that’s less than 90° F (32° C).
- If you plan to store your device for longer than six months, charge it to 50% every six months.
Depending on how long you store your device, it may be in a low-battery state when you remove it from long-term storage. After it’s removed from storage, it may require 20 minutes of charging with the original adapter before you can use it.
Optimize your Settings
There are two simple ways you can preserve battery life — no matter how you use your device: adjust your screen brightness and use Wi-Fi.
Dim the screen or turn on Auto-Brightness to extend battery life.
- To dim, swipe up from the bottom of any screen to open Control Center and drag the Brightness slider to the left.
- Auto-Brightness adjusts your screen to lighting conditions automatically. To activate it, go to Settings > Display & Brightness and set Auto-Brightness to On.
When you use your device to access data, a Wi-Fi connection uses less power than a cellular network — so keep Wi-Fi on at all times. There are two ways to turn on Wi-Fi:
- Swipe up to open Control Center, tap the Wi-Fi icon, and log in to a Wi-Fi network.
- Go to Settings > Wi-Fi to access a Wi-Fi network.
View Battery Information and Usage
Here are the messages you may see listed below the apps you’ve been using:
Background Activity. This indicates that the battery was used by the app while it was in the background — that is, while you were using another app.
- To improve battery life, you can turn off the feature that allows apps to refresh in the background. Go to Settings > General > Background App Refresh and set the switch to Off.
- If the Mail app lists Background Activity, you can choose to fetch data manually or increase the fetch interval. Go to Settings > Mail, Contacts, Calendars > Fetch New Data.
Location and Background Location. This indicates that the app is using location services.
- You can optimize your battery life by turning off Location Services for the app. Turn off in Settings > Privacy > Location Services.
- In Location Services, you can see each app listed with its permission setting. Apps that recently used location services have an indicator next to the on/off switch.
Home & Lock Screen. This indicates that the Home screen or Lock screen was displayed on your device. For example, the display was awakened by pressing the Home button or by a notification.
- If an app frequently wakes your display with notifications, you can turn off push notifications for the app in Settings > Notifications. Tap App and set Allow Notifications to Off.
No Cell Coverage and Low Signal. This indicates that either you are in a poor cell coverage area and your iOS device is searching for a better signal or that you’ve used your device in low-signal conditions, which has affected your battery life.
- You can optimize your battery life by turning on Airplane mode. Swipe up to open Control Center and tap the Airplane mode icon. Note that you cannot make or receive calls while in Airplane mode.
Plug in and power on your device to charge.
Make sure your computer is plugged in and powered on when you’re using it to charge your iOS device via USB. If your device is connected to a computer that’s turned off or is in sleep or standby mode, your device’s battery may drain. Note that iPhone 3G and iPhone 3GS cannot be charged with a FireWire power adapter or FireWire-based car charger.