Nowadays there are several wireless charging systems and techniques to charge the battery of wireless peripherals: we have from docking stations that are not really wireless because we have to “hook” the device to a base to mats that charge the battery of the mice automatically thanks to an induction process, to NFC chargers that use the same system as smartphones. But if you notice, there is no device that allows wireless charging via Bluetooth, why?

Wireless charging via Bluetooth is not yet possible.

Perfiles Bluetooth

It would be ideal, wouldn’t it? If you have for example a wireless headset or a wireless mouse with Bluetooth connection, you could use it while charging the battery at the same time, which would virtually mean that it would never run out of battery as long as you keep it connected. Unfortunately, however, this is currently not possible as the Bluetooth wireless communication protocol does not currently support remote battery charging.

Currently, the most modern Bluetooth standard is 5.0 (with its variants and versions), a protocol that introduced as a novelty Bluetooth 5.0 Low Energy or Bluetooth LE, already introduced in version 4.0 in a slightly more archaic way but whose function is to reduce the power consumption of connected peripherals, or in other words, makes the communication of the device with its receiver consumes less energy … but does not serve for charging.

With each new iteration of the standard, more and more bandwidth is achieved, which translates into higher speeds, shorter response times, more signal stability and more communication distance, but the Bluetooth standard does not contemplate the transmission of energy at the same time as the data necessary for communication, which is why wireless charging via Bluetooth is not possible… at least for now.

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Will it be possible to charge peripherals via Bluetooth at some point?

Logitech Powerplay

In order to elucidate whether this will ever be possible, we must first talk about NFC technology. NFC stands for Near Field Communication. It is a communication technology that works in the 13.56 MHz band and derives from radio frequency technology to be able to transmit power and, effectively, to be able to charge devices. The problem is that, as its name suggests, only works if the transmitter and receiver are very close, and for that reason to charge the battery of an NFC device we have to place it right on top of a surface containing the chip that enables it. </p

There are other wireless charging technologies like the one Razer uses on its HyperFlux devices, but in this case the charging is done via induction, with a magnetic field that also requires the devices to be practically touching to work

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That said, wireless power transmission with current technology requires the two devices to be in close proximity to each other in order to work, and this is something that goes starkly against the Bluetooth standard which is always looking to extend the range of operation. For this reason among other things, the body that regulates and develops the standard is not even contemplating the possibility of wireless charging via Bluetooth, so it is unlikely that we will see it in the near future.

Obviously, as we mentioned before it would be really convenient because it would allow us to virtually never need to charge the battery of wireless devices because it would be automatically charged just by being connected via Bluetooth, which is why they will surely have already experimented with it, but if we have not had tangible news so far is because they have not managed to achieve anything.

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