I vape about twice that much...about 3.5-4ml a day.
I'm going to order the 25cm charger & see how that goes - someone said something about it having a special chip (?). Maybe, it might charge faster, too.
I'd love to see the day I can get at least 2 days out of a trustworthy battery.

Btw...my 'black eyed' battery has 4 notches.
After overcoming a problem at the beginning, this battery is still working great. Charge lasting 1 day for me.