My first battery holder prototype is hot out of the press! Looks pretty good and holds the two Li-Po batteries I am planning to use in my rocket’s e-bays. There are few quirks I will need to correct, and few additions. Indeed, I will use zip ties to lock the batteries so they don’t pop out of the holder on deceleration. The holes I’ve designed initially for that purpose are too small and I will need to move them in a different position. I will also need to pick one PDUs and add a support for it on the outer shell of the holder. I will also need to experiment with shoulder nuts to ease the mounting and dismounting of the electronic boards as I will start to incorporate them into the design. Overall, I am satisfied with this first spin of the battery holder!