Will the iPhone battery still work after 500 cycles?

Absolutely, the iPhone battery will still work after 500 cycles. It will even still work after 1000 cycles. iPhone uses lithium-ion battery which currently provides the best performance for your device. However, the battery battery starts to lose capacity after 300 or 400 charges. According to Apple Inc, after 400 complete cycles, the iPhone’s battery still has 80 percent of its charged capacity.
A battery cycle is one full discharge, followed by one full recharge. In other words, using a little battery and then putting your iPhone back in its dock doesn’t count as a charge cycle. If you use a quarter of your iPhone’s battery and then re-charge it, that’s the equivalent of a quarter of a charge cycle.

Maximising Battery Life and Lifespan

Enable Low Power Mode.
Introduced with iOS 9, Low Power Mode is an easy way to extend the battery life of your iPhone when it starts to get low. Your iPhone lets you know when your battery level goes down to 20 per cent, and again at 10 per cent, and lets you turn on Low Power Mode with one tap. Or you can enable it by going to Settings > Battery. Low Power Mode reduces display brightness, optimises device performance and minimises system animations. Apps including Mail will not download content in the background, and features like AirDrop, iCloud sync and Continuity will be disabled. You can still use key functions like making and receiving phone calls, email and messages; accessing the Internet; and more. And when your phone charges up again, Low Power Mode automatically switches off.

twoSwitch Phones have Less than 10 Charge Battery Cycle

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