Dremel 1100-N/25 7.2-Volt Stylus Lithium-Ion Cordless Rotary Tool Kit with Docking Station

It's a great idea and should be a five star tool because of its wide range of uses combined with great portability. Unfortunately, it just doesn't hold up over time. I bought mine a couple years ago through Amazon (long enough to be past its warranty) and it won't hold a charge anymore. Since there's no way to replace the battery, it's junk. For the first year maybe, it worked very well - though I never used it that hard or all that frequently. Then it started cutting out every once in a while, requiring a restart only to have it cut off again when any pressure was applied. Then it stopped working altogether.
I'm willing to try the 8000 model because I got to used to a cordless tool, so we'll see if that one holds up a little better. The good news is, that one has a replaceable battery so I have more confidence in it than I do with this one. The pistol grip is a nice feature, but I'm more than willing to sacrifice that for a tool that might actually stick around for a while.

I purchased this tool last year at a big box store at a considerable discount. I didn't need it as I have several corded rotary tools, but It was so cute I bought it and gave it to my wife to use for her craft work. I have since "borrowed" it when I had the need to use a rotary tool for doing very fine work repairing electrical switch gear and some electronics. This is the ultimate tool for that task. The lack of a cord allows for a much better feel of the tool when doing delicate work. I have used it to renovate electrical contacts, removing burned residue without disturbing the base metal and other delicate material removing operations. The variable speed is good. The balance of the tool and the hand grip seems to give me better control that my corded units. I also realy like the battery capacity and shelf life of the battery charge. I don't use it very often, but it is always ready to go. The last time I used it I was working in a water pumphouse with water everywhere and the floor had about 1/4" of water on it. I was very happy to be using a cordless tool in that invironment. The water tank had lost its air charge and the contacts in the pressure switch had burned from repeated short cycling of the pump. I was able to clean up the contacts and put it back in service without a fear of electrocution. The position of the switch and other obstructions made it impossible to use a file or sand paper. Using this tool prevented me from having to dissassemble the piping components, saving several hours of labor.

This is a great tool with good battery life (duty cycle) to do all my jobs. This has replaced the 4.8v dremel 10x over and its definitely worth the price while the battery is working.

However the battery now is dead and replacement will cost $42 + shipping back to the nearest Dremel service center. I thought that this is information that I would liked to have had on this tool before purchase. For some reason I assumed the battery was replaceable. I bought a corded 4000 in the meantime trying to decide if I really need a cordless tool for an additional $40 for maybe another 2 years... it goes by pretty quickly.

I emailed them and they said to send the unit back and it came back a week later all fixed !!! Its been back a month and already been used in about 10 projects !!!