电源（DC Power Jack)&电池扣（BH1）
From ESS-WIKI
RTC Battery Connector (BAT)
RSB-4680 supports a lithium 3V/210mAH CR2032 battery with wire via battery con-nector.
| Pin | Pin Name |
| 1 | COIN_RTC |
| 2 | GND |
插一张电池接口的图片
RSB-4680 supports a lithium 3V/210mAH CR2032 battery with wire via battery con-nector.
| Pin | Pin Name |
| 1 | COIN_RTC |
| 2 | GND |
插一张电池接口的图片