The BCA Float E2 45 Airbag Pack is a tech-fueled upgrade to the legendary Float airbag packs, employing the Alpride E2 engine with a supercapacitor rather than an air cylinder. It performs better in cold temps, releases energy faster, and is much lighter and smaller than traditional rechargeable batteries. The E2 System can also be recharged in the field using 2AA batteries. The Float E2 45 is the largest in BCA’s capacitor-powered collection, with enough carrying capacity for multi-day or hut trips. Skip the hassle of emptying your cylinders before you get on the plane and re-filling them far from home, and join the Supercapacitor Revolution with the E2 45.