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 etc. This smart car battery charger for automobiles, marine, boats, camper, trolling motor, watercraft, riding lawnmower, lawn tractor, etc 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 level of 25%/50%/75%/100%. The charger will stop charging automatically when the battery is fully charged. Multi-Protection - This Smart trickle battery charger is designed for maximum safety protection to avoid reverse polarity protection, over-temperature protection, overcharge protection, short circuit protection, low and higher voltage protection. Easy to Use - Trickle charger no need of any manual operation, just plug and leave it for charging and maintaining your batteries automatically for long time. The microprocessor controlled program will monitor the whole charging progress and automatically stop when the battery is fully charged. Safe and Durable - This smart charger automatically switch to maintenance mode with constant pulse current to maintain charge and keep the battery at optimal level. Perfect for long-term battery storage to prevent battery stratification and sulfation and prolong battery life.