Ryobi XB2000mAh 18V 2 Batteries with Charger Kit is lithium-ion batteries and a dual-port charger. The batteries are compatible with all Ryobi One+ cordless power tools, and they provide up to 25% more runtime than comparable NiCad batteries. The charger can charge both batteries at the same time, so you can always have a charged battery ready to go. LED indicator displays charging status. Battery: Larger capacity, more power and longer run time with deep charge protection and charging time: 45min.