I have a SL20XP that I have put a SL35 lamp in, and I am trying to bump the voltage a little. I have someone that can build a pack out of 4/5 sub c batteries that would put the voltage up to 7.2, at 1.7 mAh. Has anyone else tried this or even know if it will work? If there is a better way please speak up.
Bravo25, you want to get more throw out of your 35X LA by going to 6 cells. That might work, at the expense of run time. Use the 20X LA, with five cells. I think you will like the throw, and the run time would be better than the 35X LA, though the 35X LA with 6 cells is a monster. I run the 20X LA in my older 20XP.
I have run the SL35X LA on various 6-cell packs as has Jim Sexton, the daddy of the Tigerlight mods. We have found that the bulb is somewhat fragile and does not like being overdriven on six cells. You can't light it on a freshly charged pack and and it's life is not that good even on rested packs.
It's bright on six. Just not at all reliable. This is not a recommended application.