Qi charging

[richaron]

Can anyone spread some light on how Qi charging functions when at full? Obviously whilst charging the inefficiencies and increased heat of Qi charging is "bad" for the batteries.

Any by comparison regular cable charging is more efficient and (at least at low currents) has less heat output whilst charging. And once fully charged it switches to trickle charging under a slightly raised voltage, and this raise voltage is "bad" for the batteries over a long term (i.e. charging overnight whilst sleeping isn't ideal).

So I fully accept some of these problems might be minuscule with regards to long term battery life, and I would never advocate compromising convenience for such small results. But all things being equal I would like to be aware of the ideal charging routine.

So is leaving a full phone on a Qi charger perfect for the battery? Is it slightly bad for the battery but better/worse than leaving on a cable charger?

 

[lopri]

Wireless charging is simply a method of power delivery, and all the things that hurt battery health still apply equally. Meaning it is better to remove the phone from the pad once it is charged. Some charging pads come with overcurrent protection, which basically stops charging once a device reaches a full charge and wait until it drops to a certain threshold before recharging. As for pros, Wireless charging has no direct contact with the phone's internal, which brings two benefits: removing the potential accident caused by direct current, and eliminating wear and tear of the charging port on the phone. Its cons are its low efficiency - which, I guess, can work to its benefit in overnight-charging scenarios.