Just in case you wanted to see where you can actually reference the *data points am discussing, in regards to the West Marine Sea Volt/ East Penn product, you can find it in the West Marine catalog. This chart is on page 379 of the 2014 West Marine catalog..


When buying batteries for deep cycling use, ALWAYS be sure you can get your hands on manufacturer cycle life data to compare their batteries across types. No data? No buy.......



Reference: I have confirmed this data to be accurate, with West Marine, to the best of their knowledge. The data in this image comes straight from West Marines supplier, East Penn also known as Deka.