Thumb Score: +16 Home Depot [homedepot.com] has 20V MAX 4.0Ah Lithium-Ion Battery w/ 12V to 20V MAX Charger on sale for $63.75. Shipping is free. Product Details:[LIST][*]Battery voltage: 20V MAX[*]Battery capacity: 4.0Ah[*]Battery type: Lithium-Ion[*]Charger compatibility: 12V to 20V MAX batteries[*]Compatible with 20V MAX cordless power tools and outdoor equipment