You may have heard that charging your phone overnight damages the battery. However, that's not true, according to a report by independent.co.uk, which cited a Quora answer by tech author, Jesse Hollington.
Hollington said charging your phone overnight will not harm your battery in the slightest.He said charging your iPhone from 90% will not harm your battery either, as you simply can't overcharge an iPhone, or any other modern electronic device, for that matter. According to him, iPhones and similar devices use a lithium ion or lithium polymer battery that incorporates a charging circuit which cuts off charging power when the battery reaches 100.
Basically the smartphone battery is as smart as the phone itself. Apple, Samsung and all the top tech companies - almost of whose products use lithium-based batteries - use this best practice.
"Obviously if you're using your iPhone until the battery goes dead, that's fair, but there's no need to deliberately drain it before recharging it, and you'll actually shorten your battery life if you do so," he said.
Holington added that, contrary to popular belief, it is better not to wait for smartphone batteries to die completely before recharging them.