Charging while batteries connected?

In the charging picture it looks like the two batteries are still connected. Does that work? Can the batteries continue to power you circuit?

randofo13 days ago

This charger is designed to charge two batteries individually each running at 12V, or wired in series at 24V.

You can see the manual here:

I wouldn't power the circuit while the charger is connected because the charger needs to plug into the wall, and the motor will likely be moving your device around (under most circumstances).

However, it will not charge if it is drawing more current out than it is putting back in. It is likely bad form to drain the batteries while charging, and albeit I have not read the manual too closely, I would imagine the charger would not appreciate that.