12V 1500mA Automatic Smart Motorcycle Battery Charger Maintainer for Car/RV/ATV/Boat Automatic Battery Trickle Charger with LED Good Compatibility - Automotive battery charger perfect for all types of 12-volt lead-acid batteries, including Wet, Gel, and AGM. This smart car battery charger is suitable for automobiles, marine, boats, camper, trolling motor, watercraft, riding lawnmower, lawn tractor, and more 4 Stage Charging State - This smart charger constantly monitors the battery level and automatically adjusts the converter output voltage based on the battery's charge status. LED indicator displays battery charging status at levels of 25%, 50%, 75%, and 100%. The charger will stop charging automatically when the battery is fully charged Multi-Protection - This smart trickle battery charger is designed with safety features including reverse polarity protection, over-temperature protection, overcharge protection, short circuit protection, and low and high voltage protection Easy to Use - Trickle charger requires no manual operation; just plug in and leave it to charge and maintain your batteries automatically. The microprocessor-controlled program monitors the entire charging process and automatically stops when the battery is fully charged Safe and Durable - This smart charger automatically switches to maintenance mode with constant pulse current to maintain charge and keep the battery at optimal level. Ideal for long-term battery storage to prevent stratification and sulfation and extend battery life