You may be in the habit of plugging in your smartphone to charge it whenever your battery gets low or, simply whenever you have time. But overcharging a battery can hurt its lifespan.
A new study suggests there’s actually a better time to charge your phone’s lithium-ion battery, at a point where it is most efficiently able to accept power. If you want your phone to charge faster, let the battery dip super low before you plug it in.
“Generally, a battery can accept higher charge rates at a lower state-of-charge percentage than it can at higher percentage,” Mark Carlson, an engineer at Motorola, told Forbes.com. “So a battery at 10 percent can generally accept higher charge current than a battery at 50 percent.”
Source: “Science Says This Is the Best Time to Charge Your Smartphone,” Forbes.com (March 22, 2016)