Size and weight, it's smaller and lighter than I expected. I was out on the water for about 4 hours. The wind would kick up now and then and I had to use the trolling motor a lot. This battery has only been used once so far, time will tell if it's going to be a good value or not. So far so good. The positive battery terminal was bent during shipping. It would help to re-enforce the topside packaging method. The soft lead terminal bent back into place easily however.