Pros and cons to batteries Tony. Initial cost is one thing, never needing to buy new batteries another and you know how much they cost. Good for small areas but for a small team working together screwing all day needs a lot of batteries and chargers. We're efficient and save time anywhere we can, not with one big thing but an accumulation of things. Carrying and unplugging chargers and batteries all lumped together in buckets sometimes getting batteries mixed up with flat and full, setting them up again several times a day costs more than 3 minutes through the day and adds up over the week,month,year. Busy so don't get back to change a battery over or a flat gets loaded by mistake so have to swap while boards are being held up. Tried it, more trouble than lumping a transformer and leads. If i can knock half an hour off my day saving time in lots of small ways, who can argue with that.
Anyway bought a concept (corded) will give it a go.
Hilti have reduced the cost of their batteries considerably. A new 3.3ah 22v Lithium is only Â£65 + Vat. It has 4 lights on it to show the state of charge and doesn't need to be exhausted before recharge which takes 20 minutes. I am using 2009 year batteries that perform like my 2012 ones. I can fix all day and not use 3 batteries. Plus the new Hilti is 5000 rpm so more than powerful enough.
Drag a cord around all day? I'd rather take 2 bottles into the shower, and I have no hair.