.K2 Energy 12V 7Ah K2B12V7EB Lithium Iron Phosphate Battery is the ultimate in weight versus power technology. This is a drop in replacement for your Lead-acid battery, and will require no change to your stock charging system. It can be placed in electric scooters, bikes, UPS backup systems and wheelchairs anything that uses a sealed lead acid battery. LifePO4 contains no poisonous lead, no acid, and do not create gasses during charge, as traditional Lead-Acid batteries do. Compared to lead-acid, Lithium Iron Phosphate batteries are also extremely light, have much lower self-discharge, do not sulfate, and are environmentally friendly. Because of its light weight, safety, excellent thermal stability, good electrochemical properties and high specific capacity is this application of the material very well received.