The Makita LXT 18-V 3-Ah Lithium-ion battery offers more power, less weight and better fit. The optimum charging system produces 280 percent of the total life of standard batteries, with twice the number of cycles. With five times lower self-discharge, the lithium-ion battery is operational, even after long term storage. Built in shock absorbing features to protect the battery and a memory chip to maximize the battery charger controls heat with three assets: current, voltage y. Sixteen companies holding contact terminals reduce the risk of power loss / fluctuation in high vibration environments. This battery is guaranteed for 1 year.