Flying with Energy Jetpacks: Leadstone to Resonant
The Redstone Flux Line
The energy jetpacks are Leadstone Jetpack, Hardened Jetpack, Reinforced Jetpack, and Resonant Jetpack, with armored versions of each. They are charged rather than fueled by solid items, so you refill them at an energy source. Their thrusters are Leadstone Thruster, Hardened Thruster, Reinforced Thruster, and Resonant Thruster.
Charging and Flight
Equip the jetpack in the chest slot and charge it using any Redstone Flux compatible charger or energy cell. Once charged, hold jump to lift off. Higher tiers hold more energy and provide stronger thrust. The Flux-Infused JetPlate and Flux-Infused JetPlate (Enderium) are the top of this family, using Fluxed Thruster and Flux Armor Plating or Gelid Enderium Armor Plating.
Voltage Variants
A parallel line uses voltage tiers: Low Voltage Jetpack, Medium Voltage Jetpack, and High Voltage Jetpack, plus Padded Low Voltage Jetpack (Armored). These use Low Voltage Thruster, Medium Voltage Thruster, and High Voltage Thruster. Choose the voltage line if your power network is voltage-based; choose the Redstone Flux line if you already run Flux networks.