This is probably the wrong place to post this, but I have a pro mini with the twins 18500/18650 telescopic extension. I'm using aw imr 18650s in it, but the provari cuts out quicker than it should. When I test the battery after, it still reads 3.6 volts. I've tried this with two different new red aw batteries. I put it on the charger and it only takes 500 mah to get back to full. I found out that the twins extension must not be making the best connection. If this is causing some resistance, then there would be voltage drop, causing the provari to cut off early. When I test the battery using the provari, I can see the voltage drop. It's acting like a really old battery, but they aren't. When I do discharge tests with my accucell charger, the aw 18650s at giving me great performance. Any suggestions of what I can put on the threads of the twins to make a better connection? There is no point in using this extension with such a bad connection. Thanks