While at Poulsbo RV, we took the opportunity to replace the flooded cell batteries with maintenance-free AGM batteries.

AGM stands for Absorbed Glass Mat, which just describes the way the batteries are formulated. They’re similar in performance to the basic flooded cell ones, with one key difference: they don’t need to have the water checked and topped up frequently. One less thing to worry about.

Here are the flooded cell batteries that came with the coach; six 6V batteries in series and parallel, for 12V:

And our new AGM batteries: