Crafted with a quiet EMI design, the Promar 1 DS Generation 3 10-Amp Digital Charger features a fully automatic 4-stage charging algorithm that analyzes, chargers and conditions your batteries. The charger is prewired with waterproof inline DC fuses and nickel-plated copper ring terminals for durability and smooth current flow, and it features an auto maintain, energy saver mode to help extend battery life. The dual mode charge status indicator and fault detections allow you to keep your eye on the performance.