I ran another Oceanus battery check today. With Ampking battery b, fully charged, running 0.45 ohms at 24W with power boost. I made it through 229 puffs, a full 14ml of liquid, before the hard cutout tripped. The innokin says the battery is at 3.3V, well within safe limits for discharge, though I'll check it at home later.
If the A battery does the same, that's perfectly fine run time for me -- my Sanyo batteries should be even better [emoji3]
(ml is easy for me to use -- I start with a full tank, and use a 15ml unicorn bottle to top it off