Wireless charging of phones from across the room? The tech inches closer (video)

Wireless charging is available now, using the Qi standard. All you need is a Qi charging pad & a receiver for your phone. I have one in my Samsung Galaxy S4. Receivers for phones with non-removable batteries are incorporated into a case.

In my experience, the phone needs to be be positioned precisely to charge at the highest possible rate. Current drawn from the wall can vary between 4 & 7.5 Watts, depending on the position of the phone on the charging pad. I assume this is reflected in the time taken to charge, although I haven't timed it.

Which brings us to another possibility: do you want wireless charging, or would you prefer to be able to charge you phone in under a minute? It could be very useful at the airport, or if you forgot to plug it in overnight & you have to leave for work. Elon Musk has suggested charge times of 5 to 10 minutes for Tesla electric vehicles in the future.

Wireless charging

http://singularityhub.com/2014/05/25/wireless-charging-is-poised-to-go-mainstream-at-last/

Tesla 5 minute charging

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