Makita OEM (1) DC18RC Charger + (2) BL1840 4.0 Ah Batteries

Throughout each charging cycle the DC18RC maintains communication with the battery's built-in chip, continuously adjusting current, voltage and temperature to help preserve battery life. An exclusive built-in fan cools the battery (sold separately) by directing air through the battery's air vents during charging, which speeds up the charge process. These features combine to deliver category-leading battery charge times, so batteries spend more time powering tools and less time sitting on the charger.