Jan,
The hydraulic pump and hydraulic cylinder are from a French company, I do not remember the name but you can find it in posts from Cotemar or myself.
There is a bypass valve. This uses about 1.5 ampere when the
autopilot is active. You can purchase an Ecopilot electronic circuit which reduces the current of the bypass solenoid from 1.5 to 0.25 ampere. I bought it, it works well. See my posts about this.
The
autopilot is performing very well. The current consumption is with the Ecopilot about 1.5 ampere. This is the current of the
Furuno electronics plus the current of the hydraulic pump. Without the Ecopilot 2.75 ampere.
My boat uses now just under 2 ampere, that is with all
Furuno electronics on including the
autopilot, during the day (no nav lights) and a
Garmin 276C plotter.
Excluding the refrigerator (14 watts average power acc to spec).
At night the power consumption is not much higher since I use led's everywhere. As a consequence we use average power incl fridge of 3.5 ampere. If we use the
batteries 50 % (maximum recommended discharge) we can sail for 2 days (48 hours) without recharging. We did so, last week we sailed to
Norway non-stop in 78 hours. We charged once for 4 hours, when the wind dropped below 4 knots.