So the Protank 2 I have doesn't seem to like my eGo battery, and I'm not sure I understand what's going on. It works fine on my SID, but just now as the battery on the SID ran out I switched over to my eGo-V V2, screwed to Protank on, went to vape, nothing. So I thought it must have been the eGo battery dying on me as I've had it for months now, but I screwed on a Vivi Nova just to make sure, and that fired without a problem. So I took the battery for the SID out the charger real quick and screwed the Protank back onto it, fires without a problem. What makes me even more confused is that I've had the Protank on the eGo before without any problems. So essentially what I have is a Protank that works perfectly, an eGo battery that works perfectly, but they just don't work with each other any more. Anyone able to shed some light on this?