The best battery for the AirMini depends on your needs and preferences. If you’re looking for something efficient that you can travel with, we’d recommend the Zopec Voyage for its small size, universal AC outlet, and FAA-approval. If you need a backup battery you can fly with, check out the Portable Outlet UPS Battery instead. If you’re unconcerned with flying or just want the biggest possible capacity, check out the Zopec Explore 8000. Additionally, the EXP96 Pro is another good option if you have a DC Power Converter for your AirMini.