Nokia is developing battery technology without charging?

The news site WMPowerUser has published an article from the Guardian's source since 2009 that provides an interesting information that many people may not know. Accordingly, since 2009 Nokia has been developing a new wireless charger that can help phone batteries become "immortal".

According to the above article, the new technology Nokia is working on allows phones to charge wherever there is electricity from the field without having to plug in the charger, if left in Standby Mode. The prospect that such a phone does not need to be charged sounds fabulous, but it is completely grounded and has been put into use in certain areas.

This charging system built into the phone automatically turns the electromagnetic waves around us into electricity and provides charging power to the phone. Around us there are many electronic devices, electric poles, transmitters . all of which emit electromagnetic fields so this system will help the phone to always be charged without having to plug in the wires. half.

Nokia Research Center in Helsinki

The British Guardian website also said that the energy gained from the surrounding environment is still quite small, only 5 milliwatt. Scientists hope to push this level to 20 milliwatts so that the device won't drain the battery in standby mode. Even if pushed to 50 milliwatt, the phone can automatically charge the battery.

The technology sounds a bit far-fetched, but it has actually been applied, typically the Oyster monthly card in the UK. This type of card, when swiping through the card machines, will accumulate an additional amount of battery to make it work. In addition, RFID tags used to prevent theft in supermarkets can also recharge themselves in the same way.

As for the technology that Nokia is developing, they say their systems can obtain more than a thousand times more power from kilometers away. That is, if you are standing in the desert but about 2 kilometers away there is a certain power station, the phone can still charge and charge itself. To do this, an antenna has an ultra-wide band to receive signals and two simple circuits. One of the two circuits, along with the antenna, is responsible for receiving signals in the frequency range of 500 Megahertz to 10 Gigahertz, converting the electromagnetic wave into an electrical current and the second circuit will convert that current into battery for charging the machine.

It's been 3 years since the article appeared and the latest related product we saw from Nokia is the Lumia 920 integrated wireless charging system. Perhaps we need to wait a few more years. moreover, the technology helps us to use the phone without ever needing to be charged.