Makita BL1815 18v 1.5ah Battery The Makita LXT 18 Volt 1.5Ah Lithium-Ion Battery boasts more power, less weight, and a better fit. The optimum charging system produces 280 percent the total lifetime of standard batteries, with twice the number of cycles. With five times lower self-discharge, this lithium-ion battery is ready for use, even after long periods of storage. Built-in features include shock-absorbing body to protect the battery and a memory chip that communicates with a compatible charger to maximize battery life using three active controls: current, voltage and thermal. Sixteen firm holding contact terminals reduce the risk of power loss/fluctuation in high-vibration work environments.  FEATURES Charging at any time will have no effect on the battery Battery\'s built-in memory chip communicates with compatible chargers to maximize battery life 40% lighter than traditional 18v batteries SPECIFICATION Part Number: BL1815 Product Dimensions: 3 x 7 x 9 inches Voltage: 18v Type: 1.5Ah, Li-ion Charge Time (DC18SD): 30 mins Charge Time (DC18RA/DC18RC/DC18RD): 15 mins