Jean, you have to leave it on D. Otherwise, due to the too low float voltage on the C setting, the batteries will slowly (self) discharge bringing the battery
status in the red again. This in case the mains is never disconnected.
If the mains were disconnected and connected again, the charger will find that the state of charge is too low and re-start charging
according to the C boost characteristics. This will again not fully charge them.
This only goes for the original calcium batteries!
There is one BUT. Batteries need a lower charging
voltage at higher temperatures, and higher at lower temperatures. If your batteries are very hot due to being in the engine
room with engine
running, AND you were in the tropics, the batteries would overcharge. In this case temporarily go back to C setting.
This overcharging due to high temperatures (and undercharging due to freezing) can be prevented by having an external temperature sensor mounted on the batteries. I contacted Tecsup how to obtain this. Well, they discontinued supplying these. This winter I will find out where to get replacements
, or I will make them myself as soon as I know what type of temperature sensor is used. It is probably a standard 2 kilo-ohm NTC resistor.
Then just to make you guys and girls envious: (except fo people like Kev & Jo)
After sailing for 3 months we have finally reached St. Petersburg, Russia
. We are the only foreign yacht in the city. It is a beautiful city, we will stay for a total of one week. Then we have to sail back to he Netherlands
before the winter, we have 2 months for that.
We hope to miss all the autumn storms, which in this region are the remnants of the tropical hurricanes of the Caribbean
. So hopefully you did not have to many of these there in the Miami
Jef and Marin