This set of Makita batteries will help you accomplish all of your renovation projects. You won't have to take breaks in between charges since this set comes with 2 batteries. These durable, black-coloured lithium-ion batteries offer 18 V of power, with 4 AH. They offer 33% more run time that average 3.0 AH batteries, without any extra weight. The optimum charging system utilizes 3 active controls (current, voltage and temperature) to maximize battery life. In addition, the LED charge level indicator will display the approximate remaining battery power. This product is backed by a 1-year limited warranty.