4A smart charger, ideal for 12V vehicles up to 2L, and recommended for START/STOP batteries. Compatible with lead acid, gel, calcium, EFB and AGM batteries. The smart charge cycle charges the battery twice as fast as a standard charger, and protects against overcharging. Slim line design makes it easy to store, while the one-button functionality makes it easy to use. The charger automatically detects the battery condition and applies the most suitable charging cycle. Includes maintenance mode for long-term connection: ideal for keeping infrequently used batteries in good condition. Rated IP65, making it weatherproof for charging outdoors. Compatible with Ring RSCBM Battery Monitor.