.75 Amp Maintainer for basic battery maintaining applications. Rated for 300CCA this fully automatic-faster, safer, smarter maintainer plugs directly into an AC outlet. It is microprocessor controlled and automatically adjusts the amperage rate to charge and maintain. Monitors the battery and resumes continuous charging when the battery becomes discharged. Multi-Stage charging for added precision, safety and battery life. LED indicator shows when charger is connected or charging. Charges standard AGM, Gel and deep- cycle battteries. Reverse hook-up protection-charger will not operate if the clamps are reversed.