I have both the Nokio and Energizer chargers. I've contacted HTC support twice and they state that the phone should not be left on the charger after achieving a full charge. This seems ridiculous for a phone that has wireless charging capabilities. Anyone else heard of this or (hopefully) refute?
Brian Klug at AnandTech indicated somewhere (maybe in an article or on Twitter, I don't remember) that unlike some other devices, the Droid DNA does not properly disconnect from a wireless charger when the battery reaches its full capacity. Most phones, like the Pre Plus and Pre 2 I used to charge wirelessly, stop taking a charge once the battery is full. They then allow the battery to discharge by 5-10% (depending on the phone) before restarting the charging process. This allows the battery's voltage to drop a bit, which is good because keeping a Li-Ion battery at high voltages shortens its lifespan.
From what Brian said, it sounds like the Droid DNA does not stop charging once the battery is full. Instead, it just sits there with the full charging voltage applied to the battery at all times. This will not cause the battery to explode or anything, but my understanding is that it will somewhat shorten the overall lifespan of the battery as it is kept in a high voltage, and therefore high stress, state whenever the battery is fully charged.
I have so far not bothered to wirelessly charge my DNA because the battery usually easily gets me through a day, and plugging it in once at night is not a big hassle, but if I were to do so I would only do it when I could pull the phone off the charger once the battery was full. Maybe I worry too much
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