I recently put together the vv box mod kit but can only get between 0 and 3 volts. Are you guys using Li ion batts? Or regular AA's? I can't even get mine to fire a 3 ohm atty I use with my LT. I am reading a max voltage of 3 volts at the 510 connector. I am just wondering if I may have blown my regulator or if I am making another mistake such as using the wrong batts. All soldered connections are good which tells me either wrong batts or blown regulator. Any insight is appreciated. BTW, I am using 2 regular AA's for power at the moment.
2 aa's only give you a max of 3.0v, 1.5v x2. Thats why your not getting any power. More importantly, its dangerous to use aa batteries. They are not rated for the kind of draw our devices are asking of them.
You need 14500 lithium ion 3.7v batteries for this kit. Here,
Protected Trustfire 14500 Battery, 900 mAH
Buy 4 of them and mark them with a sharpie 1,2,3,4. Use 1 and 2 as a set and 3 and 4 as a set. Rotate their positions with each charge. So on first use 1 will be on the left and #2 will be on the right. After recharging #2 will be on the left and #1 will be on the right.
Dont run the batteries till their dead, this shortens their life. I charge a set every day regardless of how much charge is left in them. With lithium ion, its better to charge early than charge late.