If you’re looking for light, compact batteries for smaller jobs, Woot Mother Amazon is selling the 1.5 Ah version for $27 each. Amazing price. Vs this 2x 2.0 Ah for $87 Woot deal.
https://smile.amazon.com/gp/product/B0052MIN3W
EDIT: Grab ‘em fast… looks like mother ran out of them at the $27 price and the other store fronts on Amazon haven’t hiked their prices back to $75 yet…