Battery Selection for a CubeSat EPS

Join the Discord: https://discord.gg/yeusgM75ys What do you need to take into account when choosing batteries for the harsh conditions of launching to and operating in space? Find out as I share my journey into the rabbit hole of #18650 #lithiumbatteries and learn how the @NASAJPL saves the day once again. *Dev kit shop will be up in late 2025 / early 26* – get pinged: https://forms.gle/5a2UZdfcyUmFjTZd8 ## 🛰️ Support This Project If you are looking for a way to support this channel, leave a tip or become a member :) - Channel Memberships: https://www.youtube.com/channel/UCLf9aKlW-TbC8zbrl0OvKLQ/join - Patreon: https://patreon.com/buildacubesat - Ko-fi: https://ko-fi.com/buildacubesat - PayPal: https://tinyurl.com/bac-donate *Timestamps* 00:00 Intro and Requirements 00:57 What's UL-listed? 01:31 Choosing a form factor 03:57 Choosing a chemistry 06:48 Where to look? 07:57 NASA Research 08:31 JPL Presentation by Krause et al. 09:35 The LG MJ1 Cell 10:18 Battery pack configuration: 2S2P 10:57 UL verification and sourcing 12:20 Finding a coin cell 14:14 Next steps *Repo Links* - Notes and datasheets for the mentioned cells: https://codeberg.org/buildacubesat-project/bac-docs/src/branch/main/content/s01e08/ - Upcoming content: https://codeberg.org/buildacubesat-project/bac-docs/src/branch/main/content/content-plan.md *Links* - Ultra-Low Temperature 18650 Lithium Titanate LTO Battery: https://lithium-titanate-battery.com/ultra-low-temp-18650-lto-battery/ - UL Product iQ: https://productiq.ulprospector.com/en - NASA STI: https://www.sti.nasa.gov/ - NASA Technical Reports Server (NTRS) https://ntrs.nasa.gov/search - “Commercial 18650 Lithium-Ion Cells for High-Energy, High-Power, and Radiation Applications: https://hdl.handle.net/hdl:2014/51890 - Battery Junction: LG MJ1 INR 18650: https://www.batteryjunction.com/lg-mj1 *Support this project – any help is much appreciated :)* Patreon: https://www.patreon.com/buildacubesat KoFi: https://ko-fi.com/buildacubesat PayPal: https://tinyurl.com/bac-donate *Credits* 1. "Plumbob Fizeau Atomic Test UHD" by atomcentral: https://www.youtube.com/watch?v=8PJEpeU00eU 2. Clip from "Oppenheimer", Universal Pictures *Contact* Get in touch: https://buildacubesat.space Need a friendly, non-corporate GitHub/Gitlab alternative? Check out https://codeberg.org/ #buildacubesat #episode #s01e08