WirthCo 20026 Battery Doctor Black CEC Certified 6/12V 900MA - Smart Battery Charger 6/12 Volt - 900mA Charges and Maintains Batteries from 5 to 100 Amp Hours Smart Battery Technology Prevents Overcharging Reverse Hook-up Protection/Spart Resistant Automatic "Switching Technology" Can Be Safely Connected to the Stored Vehicle for Long Periods of Time Direct Wall Plug Design 3-STAGE 6/12V Smart Charger Reverse Polarity Protection Automatic Switching Technology - Will Not Overcharge the Battery Includes Ring Terminals and Alligator Clips