‘If yours is a holiday boat it’s probably a good time to think about adding some solar charging’
The days are lengthening and soon it will be the main cruising time, so if your boat is a holiday one and you don’t use a shoreline it’s probably a good time to think about adding some solar charging.
A minimum of a 40-Watt panel and a reputable solar controller will mean that when you leave the boat for more than a couple of days with the master switches off the domestic batteries will end up well charged.
This helps extend their life, paying for the panel over a few years. But if you use an electric fridge, such a small panel will not significantly reduce the need for engine charging when out on the cut. If you want a longer time between engine running then I would suggest well over 100 Watts of panels.
Do any engine charging required early in the day and let the solar take care of the long, low rate of charge needed to fully charge the batteries. This uses less diesel.