Lightweight, compact and fully automatic 2-stage lead-acid battery charger is ideal for hard-to-reach spots. A trickle charger assures batteries are maintained after charging and are always ready to go This 6V model charges to 7.2-VDC, monitors the battery at 6.6V, and resumes full charging if the battery drops below 6.3-VDC Includes 2-color LED indicator, reverse polarity protection, and a 12' output cord with quick-connect harness