Feature: 1. ONE KEY REPAIR: The charger can repair death battery due to power loss with one button, fully automatically and intelligently. 2. FULL STOP: The charger will automatically cut off the power when the battery is fully charged, protecting the battery from damage, more safer. 3. AUTO DETECTION: Automatically detect the ambient temperature and enter the corresponding mode to ensure fully charged in winter, but not overcharge in summer. 4. SHORT CIRCUIT PROTECTION: When the charger output line is accidentally short circuited, the machine will automatically turn off the output. 5. REVERSE CONNECTION ALARM: The charger will automatically shut down the output and send out an alarm sound when connects to the battery inversely, and will be automatically released after correct connection. Specification: Item Type: Smart Battery Charger Material: ABS Applicable: 4AH to 150AH (AGM+GEL+STD) acid battery (lithium battery charging is prohibited). Package List: 1 x Smart Battery Charger Note: Lithium battery charging is prohibited.