Unusual back covers for phones, or "And what kind of contact he is?"
Recently, the LG GD510 mobile phone came into my hands. Phone as a phone - pretty, comfortable. But most of all I was interested in him four mysterious contacts under the back cover, obviously having something to do with the battery.
It turned out that LG GD510 exists in two versions - with a regular back cover and with a solar battery. In the second case, the contacts are used to charge the battery with “solar energy”.
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However, while the solar panels in the phones are useless. At least, in the instructions for the phone Samsung E1107 (another "sunflower", also available on the Russian market), it is indicated that a full battery charge in this way takes 55 hours. This means that it is impossible to actually charge the battery from the solar battery, since the light day of 55 hours can only be at the North and South Poles.
But the “nutritional” back cover can be implemented in another way, much more attractive to the user (at least for me personally). We are talking about wireless (induction) charging. In this case, a loop is embedded in the lid in which an electrical current is induced when close to the charger.
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 yet.
It turned out that LG GD510 exists in two versions - with a regular back cover and with a solar battery. In the second case, the contacts are used to charge the battery with “solar energy”.
')
However, while the solar panels in the phones are useless. At least, in the instructions for the phone Samsung E1107 (another "sunflower", also available on the Russian market), it is indicated that a full battery charge in this way takes 55 hours. This means that it is impossible to actually charge the battery from the solar battery, since the light day of 55 hours can only be at the North and South Poles.
But the “nutritional” back cover can be implemented in another way, much more attractive to the user (at least for me personally). We are talking about wireless (induction) charging. In this case, a loop is embedded in the lid in which an electrical current is induced when close to the charger.
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 yet.
Source: https://habr.com/ru/post/75945/
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