Upgrade your marine or RV battery banks. A lightly used Xantrex LinkLITE digital battery monitor for a boat or RV battery bank. This unit works perfectly and can monitor two battery banks (house & starter batteries). Complete with buss bar, wiring and operation manual. Simple to install (follow detailed instructions) and use. Although not as sophisticated as the LinkPRO it performs all the same essential functions to monitor your batteries, a battery fuel gauge! This came out of a boat where the owner changed to a different electrical system after a season on the water, wanted to keep all equipment from the same manufacturer.