Physics/Cell phone battery question
I have a question regarding optimum preservation for a cell phone battery.
On many sites I hear do not leave it in the charger all night because:
“The sweet spot for lithium-ion batteries is to keep them charged between 50 and 80 percent. This allows for the charged ions to continue to work and protect the life of your battery,” says Shane. “Charging your device in short spurts throughout the day will give these ions just enough energy to keep them going.”http://www.digitaltrends.com/mobile/expert-advice-on-how-to-avoid-destroying-you
But I also here many claiming:
Now, going back to your original question, fortunately all smart phones these days are programmed to stop charging the battery once the battery is fully charged, and from that point on, the phone runs solely off of the charger's electricity. So, there's no risk of it overcharging the battery when you leave it plugged in overnight. In fact, when we’re at work, we usually leave my phones plugged in at our desks. When the battery is fully charged, the battery isn’t in use at all, which should extend its lifespan.
The "the battery isn’t in use at all, which should extend its lifespan.
" and "keep them charged between 50 and 80 percent" seem like contradictory statements.
So if I am at my desk should I leave my phone plugged in leaving the battery untaxed or use the battery until 50% then charge it repeat. I would think the former not the latter but .....
I'm afraid I can't add much to what you have found. My reference source on that subject would have to be online. And I recognize that there was a lot of contradiction in what you found online. One thing to add to what you wrote about the smart phone charging system. The charging system of most significant devices, like a tablet for example, will have a smart charger.
Sorry that I don't have more for you on that,