How to correctly charge the battery？

​How often should you charge a phone’s battery, and will charging it to 100 percent reduce its lifespan? We round up the best battery care tips to keep your smartphone’s battery healthy for as long as possible.Batteries are one of tech’s most boring subjects… until your phone, tablet or laptop dies. Here are our top battery tips and tricks to get the best battery life you can. Also see: How to charge your phone or tablet’s battery faster.  

While most of us live in fear of a fading phone battery when we’re out and about, we don’t worry too much about that battery’s eventual lifespan (probably between three and five years). But there are ways to keep your battery in tip-top shape for a long and fruitful life.
Batteries do not enjoy eternal life. Most smartphone manufacturers say their devices rate their batteries at 300-500 cycles. Apple claims that its laptop batteries reach 80 percent of their original capacity after 1,000 charges.
After this point batteries aren’t able to hold as much electricity and will power your device for increasingly shorter periods of time.
So here’s some tips to extend your battery’s lifespan, be that in an iPhone, Android phone, Windows phone, tablet, or laptop.
The big questions about how to re-charge a battery is whether you should let it run to zero before re-charging to 100 percent. One reason why people are unsure is something they’ve heard of called the battery “memory effect”.