The CTEK NXT 5 is a 12V 5A battery charger designed for the reliable charging and maintenance of lead-acid batteries, including AGM, EFB, and GEL types. This compact charger measures approximately 18 cm in length, 7 cm in width, and 4 cm in height, weighing around 400 g for easy portability and storage. It features a microprocessor-controlled charging process with eight different stages: desulfation, soft start, bulk charge, absorption charge, analysis, reconditioning, maintenance charge, and pulse maintenance charge. The device operates in a temperature range of -20°C to +50°C and offers reverse polarity protection, short circuit protection, and over-temperature protection for safe operation. With its IP65-rated housing, the charger is dust-tight and protected against low-pressure water jets from all directions. The NXT 5 is suitable for batteries with capacities ranging from 1.2 Ah to 160 Ah, making it versatile for motorcycles, cars, boats, and other recreational vehicles. It includes a 1.5 m power cable and a 1.2 m battery connection cable with eyelet connectors and a secured connection for safe installation. The charger’s LED indicators provide clear status information about the charging process, and its automatic voltage detection ensures compatibility with 12V systems. This model is the successor to previous CTEK chargers and incorporates refined charging algorithms for optimal battery health and longevity. The device meets CE certification requirements and is designed for both occasional and regular use to maintain batteries during storage periods and prevent sulfation and capacity loss. Its robust construction and precise electronic control make it a reliable choice for battery maintenance in various environments, from private garages to professional workshops.