DCG410VSB: Complete a variety of jobs with the 20-Volt Max 4 1/2 in.- 5 in. Variable Speed Paddle Switch Grinder battery and charger sold separately. This grinder delivers power for tough jobs and is equipped with Perform and protect features like the Anti-rotation System. Battery and charger sold separately. DCB2108: 20-Volt Max XR Powerpack 8 Ah Battery delivers 50% more power and a longer lifespan. Engineered with tabless cell technology, our best performing 20-Volt Max 8 Ah battery powers through tough jobs, day in and day out. XR Powerpack batteries are a part of our best performing line of 20-Volt Max batteries and are compatible with 20-Volt Max tools. Includes: DCB2108 and DCB2108.