Last Christmas my uncle gave me one of dremel's cordless minimite rotary tools. Since then I've used it quite a bit and though, its a little underpowered and I can live with this, battery life just plain sucks. So, noticing that there were long round tubes of some kind that looked like AA batteries in the battery pack, I pried it open. Lo and behold, there were four 1.2v AA batteries inside. At first I thought they were NiMH, but after searching up the only bit of information on them, byd d-aa700p, I found out that they were in fact 700mA NiCd batteries. Now, knowing this, do you guys think I could safely replace them with 2500mA NiMH rechargables and have the same performance, but with longer work times?