Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dewalt 24 volt batteries

I bought the entire line of Dewalt 24 volt cordless tools. That includes the power saw, drill driver and saws all. I am impressed with the tools but the batteries suck. the original batteries lasted two years with constant use as I have my own contracting business. After the batteries failed I sent them to BatteryPackRebuilders.com, even though I am sure they do a good rebuilding job the batteries only last about a year but it's less than half the price of a new battery. Being in the construction business it's a real pain to be sending batteries back for rebuilding. If you're in the construction business you have to have at least double the 24 volt batteries you need because half are always out being rebuilt. I would really like to see Dewalt come out with a lithium ion battery replacement for the 24 volt line of tools as the cordless tools are awesome except for the original batteries.