Is it possible to charge a handset battery by Bluetooth or WiFi?

Dr.Sunil Vaswani September 6, 2012
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How to charge handset battery by Bluetooth or WiFi?

  1. jim
    January 4, 2013 at 8:49 pm

    Yes in fact wifi charging has been around for a couple of years and will be put into the public eye more this year. Especially by RCA.

  2. Dr. Jay
    December 20, 2012 at 8:17 pm

    In theory, yes... practically speaking, not so much... the power levels involved are very small, and the charging circuitry itself causes losses... you might be able to come up with something but it would take forever to charge anything. The concept of charging a device over a distance however is not implausible. Nikola Tesla powered a car(amongst other things) via wireless energy nearly 100 years ago. Read up on Tesla if you are interested in pursuing the idea further.

  3. HLJonnalagadda
    September 23, 2012 at 8:33 am

    I don't think there is one for Android yet. Nokia has a few models that can do inductive charging, as it is called for the new Lumias.

    • Joe Leeds
      October 27, 2012 at 10:23 am

      Yes it can work in theory, the very old crystal radios worked with out a power source. A coil could be tuned to the standard wifi frequency then rectified to produce a dc voltage to charge the phone. The problem is that unless the signal is very very strong then the power produced is very very small

  4. Raja Pradeep
    September 16, 2012 at 10:44 pm

    No, you can't charge via bluetooth or wifi.

  5. Noah Brisson
    September 15, 2012 at 6:49 pm

    In a word, No. As was mentioned though you can get an external battery pack. It depends on the phone but they start at around $25 and up. Or you could go with induction charging. This doesn't user wires but it does have to be touching the charger.

  6. Dimal Chandrasiri
    September 12, 2012 at 4:50 pm

    nope. still no way to do that! sorry, bt nokia has informed such a way by using wifi to charge! still in development.

  7. Sumaiya
    September 9, 2012 at 6:46 am

    not possible i think...but a great idea..

  8. Usman Mubashir
    September 6, 2012 at 2:07 pm

    Dude this is 21st century, not 31st. There are however devices that can charge specific devices without touching but its called induction. I think it is impossible to recharge a device via WiFi or Bluetooth.

  9. Dalsan
    September 6, 2012 at 12:59 pm

    Bluetooth recharging is almost impossible as there is too little power to use for a rectifier to collect and convert to electrical charge. To increase to output of power would go against safety regulations in most countries. Wifi is a little more possible, but the efficiency of the power used for Bluetooth or wifi would cancel out most if not all power capabilities to try to recharge the device, making the recharge process take many hours if not days to recharge a battery, and that is if you don't use your device at all. Solar panel rechargers would be cheaper and more effective to use in any environment with light, or using wireless contact-point rechargers, which seems pointless to me as you still need your device on top of another device to make a charging connection to recharge the battery, defeating the whole wireless purpose since wires still allow for using the device at a restricted distance while contract-point has no distance option from the charging point, or you could use wireless induction charging, which allows for wireless recharging within a limited range (very short distance as it uses electro-magnetic fields to be able to convert into electrical charges

    • Dalsan
      September 6, 2012 at 1:10 pm

      *to use for recharging the battery). For Bluetooth or wifi charging to work, the power must be at a high enough rate with a fairly large rectifier that uses a good amount of power to collect the radio waves would be necessary to get any amount of electrical energy feasible enough for a decent battery recharging time frame, which if it takes more than 10 hours to recharge a battery without much use of the device, would not make sense to use nor create such recharging devices.

  10. Karan Patwardhan
    September 6, 2012 at 12:19 pm

    Its not been made possible as of now....and it will surely take a long time to be made a reality and hit the markets as a product...

  11. Harshit Jain
    September 6, 2012 at 11:39 am

    No, it is not possible.

  12. Andy Pretzsch
    September 6, 2012 at 10:25 am

    I can't imagine how this should be realized. Bluetooth and Wifi both need energy if you use them - so ther is no way to charge battery...

  13. Tihomir RAdeff
    September 6, 2012 at 9:10 am

    It is not possible, i think...

  14. Amit Sinha
    September 6, 2012 at 8:33 am

    Battery charging is like transfer for electric charge which can't be transfer via Bluetooth or WiFi

  15. MrXlover
    September 6, 2012 at 6:21 am

    There are some devices can be found for wireless charging, like wireless charger with Qi standard for newly announced Nokia Lumia 920, where you can charge a handset just putting it on charger. I heard about inductive charging, but still this is only on papers and in labs.

  16. Kannon Y
    September 6, 2012 at 5:38 am

    This was a topic that I found fascinating. Hello again Sunil!

    Not quite yet, but there's something called inductive charging, which wirelessly charges your device. Of course you have to put your phone on TOP of the charger.

    I saw a killer deal on such a device on eBay earlier today, however, I've not heard much about inductive charging in general, other than that it works.

    There was recently some talk about a lightbulb that was powered, wirelessly. It basically collects ambient radio waves and converts it into a light source. I imagine that the same technology can be used to charge a cell phone, but as you can see, it would require a redesign of the phone chassis.

    • Sunil
      September 6, 2012 at 6:27 pm

      hi Kannon!

      thanks for your sincere answers

      I remember this is not the first time you have answered my question in this forum

      In reciprocation to your friendly replies : Here's Hoping that you could use your talent and knowledge of technology to serve the Supreme

      • Kannon Y
        September 7, 2012 at 5:10 am

        It's my goal in life! Thank you for the kind words. :-)

  17. rathishsrk03
    September 6, 2012 at 4:21 am

    There is a external battery charger. You can buy it and charge it. Then you can use that to charge your mobile when you are in travel. It will be very useful for you.

  18. ferdinan Sitohang
    September 6, 2012 at 2:41 am

    For this moment, i don't think there is such a device that meet your requirements.

  19. Rajaa Chowdhury
    September 6, 2012 at 2:25 am

    What is the OS of your handset as the possibility may depend on if it is a Droid or a iOS, etc.

    • Sunil
      September 6, 2012 at 6:52 pm

      Android 2.3

      • Kuldeep
        November 29, 2012 at 6:19 am

        Dear Sunil.

        Buy a power pack if u want.
        There are different brands who make power pack like sony, nokia and Belkin.

        • DrSunil Vaswani
          November 29, 2012 at 6:03 pm

          Power packs charge wirelessly?

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