This week’s Blue View discusses the 12 vdc electrical system, including the battery bank - the heart of the system. A little over a year ago, when we were still aboard Nine of Cups, it was time to replace our house batteries, and I spent a fair amount of time investigating the options. Our old Lifeline AGM batteries lasted seven years, not bad at all, but battery technology has changed a lot over that timeframe, and I wanted to see whether any of the new products would be better for Cups.

Now, a year later, I took another look at the available battery technology to find the right batteries for Blue.