Provari with RDA draining batteries

[fabricator4]

I have an IGO-W dual coil that is firing at 1.8.. i generally set the voltage to 4.5-5.. sometimes higher and am using 18350 batteries one is AW IMR 700 mAh 3.7v the other is IMR 18350 800 mAh.. 3.7 v. both button top. just wondering why i'm only getting about 2 hours average per battery.. (the provari was used, as were the batteries). The 18350's are about 6 months old. So I have no idea what's going on.. I've tried 3.0 ohm single coils... I'm not sure why i'm losing so much battery voltage.

Maths.

5 volts into a 1.8 ohm dual coil is nearly 14 watts. At a median terminal voltage of 3.7V for the battery, that would be about 15 minutes button-on time to dead flat, or about 180 five second puffs. That's assuming full efficiency and a perfect battery.

Two hours would be about right for reasonably heavy use, probably. It's about what I would expect. Actually I'd be putting the battery on charge at 3.6V terminal voltage.

 

[UncleChuck]

running dual coil setups reduce battery time by a factor of 2 therefore 1/2 the time is available compared to a single coil at the same resistance.

If the two builds have the same overall resistance, then battery life will be the same too. A 1.5 ohm single coil will drain the battery at the exact same speed as a 1.5ohm dual coil build, for example.