There must be something drastically wrong.
Even running them almost dry (can't see any juice when you pull off the tank) hasn't phased my LR tank atty's.
Alternating between 2 atty's, one lasted 8 months and the other one is still going after almost 1 year ! The one that burned out after 8 months might have been totally dry since I could see no juice when it went.Now I'm better at telling when they're almost dry.
I got mine at CIGNOT for $10. Am using light 80%PG/20%VG juice. DIY with just some menthol drops added.
I rarely clean them, perhaps once a month. Using an eGo or RIVA, about 640 mah battery.
Atomizers will vary, however. Maybe you just got some bad ones.
Cartomizers not atomisers.
@OP
One to two refills. <---- That is the honest answer.
Now you will hear folks get extended service yadi, yadi, dah and some do. They were never designed for more than one or two refills, so anything you get above that is a BONUS. A greater measure would be how much liquid you ran through it. 7-10ml and you should be happy.
Some folks boil them, flush them etc... I can't be bothered they never return the same.
$2 for a carto = $0.30/day. $0.50ml 4-5ml/day = $2 - 2.50 + $0.30, under $3 a day. How did we as vapers ever become so cheap when we were paying $10+ per day for our filthy habit.
I look at performance, rather then extend equipment beyond
there their usefulness.