You would be well served to think about your iPhone’s battery like the human heart. To keep it strong, healthy and enduring, you should exercise it regularly — even frequently to the point of exhaustion.
To the extent that you don’t do this by keeping your iPhone constantly plugged to a power source, you make a couch potato out of your battery. Then, when you really need it to run a marathon, you may find that it can’t. What’s more, the chances of your iPhone needing a battery transplant — sooner rather than later — increase dramatically.
I’ve written concisely about this subject in a recent article — “How Will Leaving Your iPhone Plugged in Affect Battery Life?” — posted in the Science section of Opposing Views. Learn more about your iPhone’s lithium-ion characteristics, the difference between battery life and life span, and the absolute importance of charge cycling your iPhone battery for a fit and long life.
- How Will Leaving Your iPhone Plugged in Affect Battery Life? (science.opposingviews.com)
- Get Battery Usage Information Right On Your iPhone or iPad [iOS Tips] (cultofmac.com)
- Is Leaving My iPhone Charging Overnight Bad? (lockergnome.com)
- Find Out How Long Your iPhone Battery is Really Lasting (osxdaily.com)
- How to fix battery life issues with iOS 6 or iPhone 5 (imore.com)
Excellent ebooks on the subject
- iPad & iPhone Administrator’s Guide; by Guy Hart-Davis (iBookstore) (Kindle Store)
- iPhone 4S Made Simple; by Martin Trautschold, et al. (iBookstore) (Kindle Store)