I would charge the battery without open battery tube everytime, so I'd like to place an external cable and plug for charge. I can isolate it with grease.
If I see openrov wiring on gitub it seem that battery are connected in series, but if I verify with tester I found that pin 4 (GND port tube) is connected to pin 7 (GND starboard tube). In series mode one GND should be connect to other battery positive.
Any suggest on simple mode to connect to battery charge ?
It is correct the wiring scheme ?