I agree 100% with Jayrob & Lasersbee. I have one of the 'old style' DILDAS from DX. I not only went to the 3.6 VDC batteries, but also put in the 'special lens' that is coated glass, made specifically for RED LASERS, (650nm-660nm), I used a lens assembly I purchased from LARRYDFW, (JAYROB ALSO SELLS HIS OWN VERSION OF THIS TYPE OF LENS). My results were a DRAMATIC increase in power, from an initial 165mW with just the 'stock' parts that came on the DILDA, straight from DX, to an amazing 295mW's !!!!! WOW !!!!! Also, as stated in the earlier posts, IF the diode should happen to blow, It's VERY SIMPLE to replace & IIRC the RED DIODES are about the CHEAPEST diodes to purchase. So, to sum things up; a change of batteries, & a change of lens, gave me an increase of a WHOPPING 130mW's !!WOOT!!
Not only that, the two modifications only took about 3 minutes to apply, & IIRC, the total cost for the new parts (batteries & lens) were only about $60.00. All in all the inexpensive MOD I did on my DILDA, turned it into one HELL of a BURNIN' MACHINE !!!! WOOT WOOT WOOT................. rob PS, A "SPECIAL THANKS" to LARRY DFW & JAYROB for the lens & also to LASERSBEE for the battery change idea. I THINK he was the 1st one that came up with the idea, for the battery change, at least he was the 1st person that I saw make a post about it. THANKS GUYS, GREAT IDEAS !!!!!!!!!!!!!!