Power inverter: how large is large enough?

Today I had the chance to answer a question on an Italian sailing forum from someone who was asking whether a power inverter he wanted to buy for his boat was “large enough” and how long would his batteries last if he would power this and that appliance. He was pleased with the answer and I thought this would make a nice blog article (yet another technical one!) so here it is.

UPDATE: online tool to size your power inverter available here.

Contine reading