How to check your iPhone battery cycle count the super easy way
Thus, knowing how much cycles are left in the battery of the second hand iPhone you are already salivating over, becomes one of the crucial tests to run before you purchase. The good quality lithium batteries, of the type that is in iPhones, last about 500 cycles in ideal circumstances (full top up, stock charger, no overheating), before starting to degrade. Given that most owners charge their iPhone almost every day, a two-year old one may just be on the cusp, so checking the number of charging cycles it has been through quickly before you buy it will come in handy. Here's what you need to do:
1. Download Battery Percentage off the App Store;
2. Start the app, and check the charge cycles that the iPhone or iPad has been through already;
3. The Battery Percentage app will show other vital information about the juicer, like the battery health level (or degradation level) in percentages, as well as its charge level status. That's all - no jailbreaking, no hooking up to a computer to check the battery cycles.