Unusual back covers for phones, or "What kind of contactees does he have?"
Recently I got a LG GD510 mobile phone in my hands. Phone like a phone - pretty, comfortable. But most of all I was interested in four mysterious contacts under the back cover, obviously having something to do with the battery.
It turned out that the LG GD510 exists in two versions - with a conventional back cover and with a solar battery. In the second case, the contacts are used to charge the battery with "solar energy".
However, while solar panels in phones are useless. At least, the instructions for the Samsung E1107 phone (another “sunflower”, also available on the Russian market) indicate that it takes 55 hours to fully charge the battery in this way. This means that it is practically impossible to charge the battery from the solar battery, since daylight hours of 55 hours can only happen at the North and South poles.
But the “nutritious” back cover can be implemented in yet another way, which is much more attractive to the user (at least for me personally). We are talking about wireless (induction) charging. In this case, a circuit is built into the lid in which, in close proximity to the charger, an electric current is induced.
As far as I know, so far there is only one implementation of induction charging in a commercial product - this is a special Touchstone charging kit for the Palm Pre mobile phone. The kit includes direct charging and a special back cover.
LG could easily do induction charging for the GD510, since the contacts for the cover are still provided. But, as far as I know, the company has no such plans.
It turned out that the LG GD510 exists in two versions - with a conventional back cover and with a solar battery. In the second case, the contacts are used to charge the battery with "solar energy".
However, while solar panels in phones are useless. At least, the instructions for the Samsung E1107 phone (another “sunflower”, also available on the Russian market) indicate that it takes 55 hours to fully charge the battery in this way. This means that it is practically impossible to charge the battery from the solar battery, since daylight hours of 55 hours can only happen at the North and South poles.
But the “nutritious” back cover can be implemented in yet another way, which is much more attractive to the user (at least for me personally). We are talking about wireless (induction) charging. In this case, a circuit is built into the lid in which, in close proximity to the charger, an electric current is induced.
As far as I know, so far there is only one implementation of induction charging in a commercial product - this is a special Touchstone charging kit for the Palm Pre mobile phone. The kit includes direct charging and a special back cover.
LG could easily do induction charging for the GD510, since the contacts for the cover are still provided. But, as far as I know, the company has no such plans.