DIY Boat Monitoring Schematic
Above it the completed schematic. Bat1 comes from an external switch so I can turn power off to the unit. I connected Bat1 and Bat2 on the board with a jumper wire between pad5 and the last pin on the connector. I did not load the full connector, just 6 pins. The spare circuit can be used for a 12 volt input of by shorting out the B-C pins on J8 it could be used to measure a voltage with R15 and R17 becoming the voltage divider with appropriate values. I have not needed it so it remains unused.
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