MOTOPOWER MP00205 6V / 12V .75A Automatic Battery Charger/Maintainer for Automotive It can charge all types of 6V or 12V lead-acid batteries, including flooded or sealed maintenance free batteries (AGM & gel cell). It's the best smart charger for automotive, motorcycle, marine, RV, Powersport, lawn&garden, children toys, etc. Fully automatic with Auto Voltage Detection Technology, 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. Then it will monitor the battery voltage and maintain the battery with a float charging current. Micro-processor Controlled program make it intelligent to detect the battery voltage automatically and select the proper charging rate. Multi-level safety barrier prevents unsafe and abnormal conditions. No worry about overcharge, short circuit and reverse palarity. ECO-friendly - Zero current draw from the battery and low power consumption. NOTE: Connecting with both the AC outlet and the Battery to work. No output when only connecting with the AC outlet and No drain from battery when only connecting with the battery. Spark-free Technology; With quick release connection options: Ring Terminals or Alligator Clips. ***NOTE*** - FOR ENERGY SAVING PURPOSE, THE BATTERY CHARGER WILL NOT WORK WITHOUT ANY OUTPUT AND NO LED ON IN STANDBY MODE WHEN CONNECTING WITH THE AC OUTLET ONLY. IT ONLY WORKS BY CONNECTING IT WITH BOTH THE AC OUTLET AND THE BATTERY.