You can run your entire Worx Power Share collection of tools on this one 20V 2.0 Ah Max Lithium-Ion Battery. String trimmers and impact drivers, circular saws and lawnmowers, Hydroshots, and leaf blowers, the list goes on and on. These batteries are lighter, which makes the tool lighter, and more efficient, than rechargeable batteries based on older designs. Max L-ion batteries don’t wane or drain and won’t suffer from the memory effect that prevented last generation’s batteries from fully charging as they got older. Plus, they just last longer, so they’ll save you money. You can buy less of them because you can share each one between multiple tools.