EarthX ETX36E Lithium Battery Harley Davidson 1690cc FLT,FLH Touring Environmentally friendly. Non-toxic, Non-contminating. Lead free. No hazardous materials The one and only lithium battery to have a full battery management system that protects from over discharge, over charge, short circuit, cell balancing built in and excessive cranking protection Fast charge when needed. Full charge in just 30 minutes. Maintenance free Extremely light and powerful. 80% lighter than a lead acid battery Best warranty on the market