The usual characteristics are as follows: battery – about 280mAh, a refill cartridge – from 0.7 ml to 1.0 ml of e-liquid which lasts for 150 to 200 puffs. The average price of the cartridge is about $2.00 to $2.50 per unit which equals $2.00 to $2.50 a day. You may buy a cig...