2 Answers

  1. The fact is that in addition to the battery itself, there is a special additional battery in the motherboard, popularly called a “battery”. In principle, it is and serves just such purposes. If you remove the “battery” from the board and disconnect the PC or laptop from the network, the time will be restored to default.

  2. The system board has its own capacitor (previously) or battery (now), which is recharged when power appears. And it is from it that the built-in clock is powered. Previously, these elements often failed and when the computer was turned off for the weekend, the time could be reset.

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