CRAFTSMAN Fully Automatic 6-in-1 Automotive Battery Charger and Maintainer with 100A Engine Start and Built-in Battery, Alternator Tester, and Desulfator CMXCESM253, 6 Volt and 12 Volt

6-in-1 Device: Combines a powerful battery charger, maintainer, 100 cranking amp engine start, battery and alternator tester, desulfator Wide Compatibility: Works with 6V & 12V standard, AGM, gel, and deep-cycle batteries Smart Power Control: Effortlessly handles 6V/12V batteries, automatically stopping when fully charged and seamlessly switching to 2A maintenance mode Precision Charging: Microprocessor-controlled to adjust voltage and charge, ensuring fast charging without compromising battery health, capacity, or longevity At-a-Glance Monitoring: Easily check voltage and charge percentage on the bright digital display Reverse Hook-Up Protection: Safeguards your battery charger from damage due to incorrect clamp connections Diagnostic Capability: With the integrated battery and alternator tester, users can check their battery charge level and diagnose electrical problems in their vehicle Battery Restoration: Advanced mode fixes battery issues to boost performance and lifespan Extended Reach - Enjoy 12 feet of combined power and battery cables for easy and flexible charging setup Complete Package: (1) 100 Cranking Amp 6 Volt and 12 Volt Fully Automatic Battery Charger and Engine Starter (1) user manual