Re: Beware survival bias
"Waste time on the job a: constantly swapping batteries b: not being able to have two people using tools at the same time c: waiting to recharge."
Systems like this aren't aimed at professionals/teams/large scale operations; the link you posted is for DeWalt consumer range. They're aimed at the kind of jobs that are done by one person, one, maximum two tools at a time, within the capacity of a single battery charge. Think putting up shelves, trimming a hedge or similar.
If you are a professional/team/large scale operation, you're only going to use batteries if there's no realistic alternative (in which case you'll likely have a number of these tools and a charging bank with 20 or so batteries) - or for the bigger/more static jobs, an on-site generator and mains power.
Biting the hand that feeds IT
