The Battery Tender 10-Bank charger is a top-of-the-line 12 volt 2.0 amp per circuit charger, perfect for automotive, motorcycle and marine repair and maintenance shops. The 10-Bank uses micro-processor technology in a four-stage charging profile to charge, improve, and float the battery so it is ready when you are. Constant current charging and regulated voltage patterns allow the battery to be recharged fully and safely without the fear of overcharging. The lights above each station indicate the stage of charge so there is no guesswork in the shop. The 10-Bank Battery Tender is used in battery rotation, when a battery is removed from service during repair or in preparing batteries for sale.