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Gauthier Provost 2020-04-02 16:36:24 +08:00
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## RTC Introduction
## Coin Cell Battery
The Location of coin-type battery is shown by this figure:
![CBattery](/helios64/img/rtc/cbat.jpg)
The battery type is CR1225, this device has diameter of 12.5mm and 2.5mm thickness.
In above figure the positive (+) polarity is heading downward to the CPU heatsink side.
This battery is used only for keep the RTC (Real Time Clock) running.