18650 / 21700 Battery Case, Switch, StepUp Conv.

18650 / 21700 Battery Case + Switch + Step-Up Converter

🔧 Features

• Fits a single 18650 or 21700 cell
  Circuit protected batteries should also fit!
• Space for a step-up converter and on/off switch
• Box with screw holes for easy mounting
• Clean layout for wiring and cable routing
• Removable lid for maintenance or upgrade
• Wall Mount
• Opener, you can also use a penny to open the case

• How to assemble
   

🔩 Components

• 🔋 Contact Spring Plates 16 x 18.5mm
  https://s.click.aliexpress.com/e/_c3Q9FsBz
• ⚡ Step-Up Converter ( 5V at 1A , 8V at 0.5A, 9V at 0.45A, and 12V at 0.3A)
   https://s.click.aliexpress.com/e/_c3s0CUCX
• 🔘 Switch (K032b028-G4)
  https://s.click.aliexpress.com/e/_c3wziMXz
• LiPo 18650
  https://s.click.aliexpress.com/e/_c4oeOBtH
• LiPo 21700
  https://s.click.aliexpress.com/e/_c2JtehdH

🖨️ Print Settings

• Material: PLA or PETG
• Layer height: 0.20 mm
• Infill: 15%
• Supports: not needed

💡 Tips

• Double-check polarity before connecting!
• Step-up converter may get warm — PETG recommended.
• Add a small inline fuse for extra safety.
  https://s.click.aliexpress.com/e/_c3EHCL7v