I would have to say that I was so impressed by the lithium ion weedeater I purchased that I am slowly updating my tools to this new technology also. I can't say enough good stuff about this drill, it is powerful yet half as heavy as any other 18 volt cordless drill I have ever used. This drill has the new lithium ion battery that doesn't have a memory like the old batteries and can be recharged at any time twice as fast and they don't weigh half as much, these batteries are supposed to last 280% longer than the old rechargeable type of batteries still in use and they don't heat up as bad either....