I have been using a K2 9.6AmpHr battery for three years in my LS-8. Compared to lead it is amazing. Very light. Holds 13 volts even in cold soak conditions like flying for hours at 17,000 feet. My lead batteries routinely drop below 11.5volts under short cold soaks. The lead battery in my ship is off to the recycle yard at the end of this year.