Dual USB Output Super Slim Power Bank Ultra Thin, 3000mAh Portable Charger Mini External Phone Battery Pack Small Dual Outlet, Emergency Phone Power Backup (Black)

Hey nice, thanks for the order! Yeah I am using this one: https://a.co/d/05hQ1nti You can input the dimensions on the backpack page to fit whatever battery (or other cargo) you have. I'll email you to confirm.