Registered a reading of 11.35 after 3-4 hrs of Humminbird use. At the ratio of Mokai outings to battery charges, should last me a full season on one charge...unfortunately! Just kidding, we'll get out there more in the next few months. Very pleased with the outcome of yesterdays trip. Got 3 decent bites, Nocqua battery lasts awhile, no issues with stalling for the 5th time and tons of wildlife views and a gorgeous day.