This is my second mod. The first one is a bust (slobish solder messed it up). This time my solder was dead on, tested all contacts. The only different thing I did is run the momentary switch on the negative instead of the positive. I don't think that should matter.
OK all the holes are there, switch is secure, and the wires soldered. So now I get my tester, checked continuity from negative battery terminal (spring end) to first solder joint of the leg of the switch (beeb) kay that's fine. Next checked that leg and the opposit leg while pressing switch (beep) kay that's fine. Next test that leg and outer body of connector (beep) looking good. Next checked outer body to center of connector (quiet) YES!! no short, now checked center and positive terminal (no spring battery contact) (beep)... OK we've got one fine continuity, right? So now check the charger if battery is ready to go... NICE, all green. Took the AA trustfire with pcb, snapped it in the box. Checked contact of battery with tester again, all is well. Last step is glue the connector right? But wait lets test the vape first. Got a working atty (tested that with original battery) put it on and NOTHING... WHAT??? BUT BUT BUT...
OK breath and think for a minute before I toss this out. So now what else is there? Last connection is the connector to atty. OK check continuity from outer body of connector to body of atty (beep), well that's not it. Last, see if it the center of the connector is actually touching the center of the atty. I taped the switch down temporarily so I get current, pushed the center post up from behind the connector with a tooth pick and THERE it is!!! I see vapor, darn... I was sooo close.
So now how on earth do I make it so that the center of the connector don't slip off and stay firm when I put an atty on? I did put back all those plastic things that came with it.
Anyway at least this post will help someone trouble shoot if something goes wrong for them as it did for me. I'm a complete noob, but thanks to all who took the time teach I learned so much and managed to understand how to put together and trouble shoot a circuit like this. Back to the drawing board... I'll report back when I get this to work.