engellen

how will i know when my cart is running out of liquid, will it completely stop making vapor or will it start to taste funny?

i have a 2 part question about electronic cigarettes the first being how difficult is it to keep an e-cig charged and filled, i have ADD and i just wonder if its easy enough to keep track of that it would be a good investment for me or not. the second question is what e cigarette would you recommend for me, i dont care how large it is or what color it is but i dont want it to at least be shaped like a cigarette, other than that i just want long battery life, thanks in advance for any responses.