I am running 1.5ohm duallies on a standard 510 battery (shortie).
It has been for test and I'm not advising it.
On batteries run with a duallie.
Thus far, the one I've been running (standard shortie) has lasted for 3 months + and is deteriorating as expected. It's life has been shortened.
I am now getting about 10 drops before the battery goes to dead mode. It did, when new, run about 20 drops (or the equivalent of a standard 510 prefilled cartomizer). When it was adapted over to a duallie, the run time dropped by 1/4 or so or down to about 15 drops of fluid.
The lower the ohms, the harder on the batteries, and it also seems to shorten the lifetime as well. If I get 4 months I'll be happy I guess, but the recharge time is getting to be frustrating, but as said, I'm doing this for testing.
I suspect the shortie 510 battery will soon be tossed. It served well....no loss...it cost me $8.99 and went a 1/4 yr.
Next test is the same conditions on a 510 regular length.
Oh, and I've run 1 duallie to over 13ml of juice, and it would have gone further, but I messed up the carto when shoving a paper clip down the center.