I bought a red <5mW laser from thinkgeek.com, and it takes 2 AAA batteries. I took it apart though, took off the momentary pushbutton switch and soldered in a wire because i need to solder on a constant on/off switch at some point but I have noticed the laser is not acting how it was before. The laser is extremely dim, and I tested the circuit and it reads about 3 volts. (Should it be 3.3?) But I am using AA batteries also and not AAA, though I thought this wouldn't make a difference as they produce the same voltage. One other thing, I don't know how much current it *should* draw, but I measured it anyways, and got some strange readings. On the 10A setting, it reads as 0.02, so 20 mA, and then I switch it to 200mA setting and it reads as 0.2. Now correct me if I'm wrong but shouldn't it go up to 20 instead of .2 since the units changed? Also, as I go down further to 20 mA, then 2mA, and so on, the reading goes to 0, which makes no sense whatsoever. Do you think my multimeter is wrong or am I using it wrong?