Just today, I bought an iPad stand for my 64GB iPad. I bought the AirDisplay app which lets you use your iPad as a second monitor, well third in my case. But I'm curious, is it "hard" on the battery or the iPad itself to leave the display on and plugged in for a large part of the day? Or is there no harm done?
Answer by AppleHack23 · Jul 06, 2010 at 12:22 AM
In all Apple products, there is a battery saving feature. When your battery reaches 100%, the device stops the charging process, and let's the battery drain down to about 96%, then starts charging again and it repeats itself over and over again to prevent overcharging. I bet you didn't know that small little feature.
Answer by ageekmom · Jul 06, 2010 at 01:07 AM
Here's what Apple has to say about the iPad batteries and iPad battery care -- **<http://www.apple.com/batteries/ipad.html>**
To notable snippets from their recommendations (there are a lot more on the linked page) are:
Charge Cycles: A properly maintained iPad battery is designed to retain up to 80% of its original capacity at 1000 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs.
Use Your iPad Regularly: For proper reporting of the batteryâ€™s state of charge, be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down).
Charging Tips: The quickest way to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter. When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge, but only when it's in sleep mode. Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer thatâ€™s turned off or is in sleep or standby mode, the iPad battery will continue to drain.
Answer by Eric Fox · Jul 08, 2010 at 03:28 AM
Leaving any device plugged in that has a charge unit will not hurt it in the short term. However, it is a good idea to let the batter run almost to empty at least once a month, otherwise you are reducing the charge capacity of the battery over time. This is true for all electric units with a chargeable battery.
So, do what you want with your computer, just make sure you run it down once a month, make the battery feel needed, to keep your battery and your computer happy.