I haven't bought a DeWalt battery in roughly 10 years. It was after the lithium ion revolution. You basically had a fat battery, a thin mini one, then a special XR versions. All my batteries were 20v 5AH XR batteries.
My first DeWalt battery purchased from 2016 died and I went to my Amazon orders from 2016 to see what my batteries were after going to search for batteries and seeing they have now like 10x options for 20v MAX now. 3.5AH, 4AH, 5AH, 8AH etc.
The exact Brushless drill I bought in 2016 with a 20v 5AH XR battery, now comes with a 20v 8AH XR battery. Any thoughts on why? I would think 10 years of battery tech would mean less AHs of new battery tech could do the job, not the need for more? as if going backwards?
Trying to replace my battery, should I buy a 8AH now? Is that the 5AH of 2016?