Quick delivery to my desk.Straight forward installation. Now the instruments tells exactly what is going on with my batteries. I have two set of batteries and one at the time is used for all use including starter. That schema should be added in the instructions.
Fully fulfills my imagination. Even more: contrary to the description and the very good instructions, this device can simultaneously display the voltage of another battery. That's the orange cable. But just the tension. That's enough for a battery that is otherwise not continuously charged / discharged. As a rule, this is the starter battery. The charging / discharging currents are then calculated for the consumption battery. BM-1 is easy to use and pretty accurate.
On long-distance you have to be informed about the energy status otherwise the skipper is a torture for the crew. He annoys his people because he can never be nearly informed about the charging status of his batteries. For the sake of simplicity, I have opted for this device. I had everything running within 45 minutes. The device can also display the volt status of the engine battery. But you have to lay a not supplied additional line from this to the installation of the monitor. (not described in the German manual) The Fkt of the device seems to be very precise!
Although that the system is installed properly the Charge and discharge value is different when the illumination is on and different when is off, thus is not possible to monitor during night. NASA support is really bad as they never replied to any email even when I called them. The delivery from svb24 was fast as always.