Yuasa 3.0 Amp Automatic Battery Charger & Maintainer Yuasa Battery, established in 1979 and located in Reading, PA, is recognized as the industry standard with over 50 years of engineering excellence. Its high-quality construction guarantees a long and trouble-free service life. Features: Automatic charging and maintenance modes maximize battery life and performance OEM-approved 5-stage charging algorithm is faster and more energy efficient Active desulfation to recover sulfated batteries Defective battery and reverse polarity detection 13 ft. total cable length (including alligator clips) Automatically switches to maintenance mode after battery reaches peak voltage Designed to prevent overcharging 5 year limited warranty Note: Not for use with lithium batteries.