I tried researching this question here prior to ordering a Mini last week and I could not find a definitive answer. Now that I have my Mini in hand, I can state that in my Mini the Efest 800mah Nipple Top battery works flawlessly. I hope this helps a few others out as the Efest is less expensive than the AW 18350 batteries with 100mah more.
Cheers,
James Welborn
Cheers,
James Welborn