I had this same problem. There are many good suggestions here, so I suggest picking one of those. I bought mine online and I can't remember where. 2000mA is more than enough for any PT on the market. Most of those only put out a real output of 1500mA, but still more than enough.
I have notice a different taste with my PT than with batteries. It has to do with more power. I have seen PT's with inline batteries. Purpose of this is wattage control. It seems kinda redundant at first, but here is why its a good idea.
A PT is a direct draw off of whatever it is plugged into to. So if you are plug into 1300mA, you get that delivery to your atty or carto (appx 6.5 watts) with 2000mA its a whopping 10 watts. (stick your tongue on it, it will shock the crap out of you!)
The inline batteries limit the flow of electricity to what the wattage capacity of the battery is. Reason this is good is it lowers the flow to what the atty is designed to handle. Some PT's just kick power and can burn up or influence the taste and flavor. You may get more vapor, but the taste is crap. You are basically burning the
juice.
That said most PT's operating at 1200mA to 2000mA are generally ok, depending upon the
juice. Some of my
juice tastes horrible through the PT, but awesome with just batteries.
You will burn up some attys faster with a PT, but if you are using cartos, it does really matter (I have burn up 2 m401 attys quickly on my PT). Flavor is key. If the flavor is good, light em up. The vapor production is always better with a PT.
My 2 cents. Hope it was helpful!
