Battery Charger / Maintainer – Model SPI10Key Features:10 Amp Automatic - Microprocessor Controlled – Multi-stage charging for added precision,  safety and battery life.Hook Attachment - Hang outside the work area for safety  and convenience.Scrolling Digital Messaging - The easy-to-read, animated display provides  step-by-step instructions to properly charge  your battery.Language Button - Press to select English, Français, Deutsch.For most battery types - AGM, Standard, Gel Cell, Calcium, Start/Stop - Extends battery life - up to 2 years longer.