This little regarded battery from a now potentially defunct business works best with AiroPro. We do disclaim here this battery wasn't created for AiroPro, produced by CCELL nor intended with AiroPro in mind. We just had an AiroPro battery go terrible after and this was lying around and it labored. https://griffinsqmhv.blogrelation.com/39814765/the-smart-trick-of-airopro-prefilled-cartridges-buy-online-that-no-one-is-discussing