Hi all,
My boat has a battery gauge on one of the panels which is supposed to show the level of the domestic and starter batteries, it looks like this:
With the switch beneath it selecting between B1 (starter), Off and B2 (domestic).
What I'm wondering is under what load conditions should it actually be read? e.g. Is it likely to apply its own known load level to the batteries and calculate the remaining level based on that, and so is only accurate when there isn't much of a load from other devices? Or should it be read when other devices (fridge, inverter, etc.) are drawing a reasonable load themselves?
I ask because it shows a fairly large difference (in the region of 15-25%) when the fridge is running compared to when there's only a light load from the LED lights + inverter. So I'm a bit confused as to which is likely to be the most accurate reading.
Thanks for any insight.