1S 21700 lithium battery holder box PCB pin type BX7, R34

Description

A 1S 21700 lithium battery box is a protective enclosure or holder designed to safely house a single 21700 lithium-ion battery cell (1S = 1 cell in series). These boxes are commonly used in DIY electronics, vaping devices, flashlights, and custom battery packs.

Specification:

1. Mechanical Specifications

• Cell Compatibility:

  • Fits 21700 Li-ion cells (21mm diameter × 70mm length).

• Material:

  • Plastic 

• Dimensions:

  • Internal: ~21.5–22mm (diameter) × ~70–72mm (length).

  • External: Varies (~25–30mm wide × 75–80mm long).

• Mounting: snap-fit design.

2. Electrical Specifications

• Terminal Type:

  • Spring-loaded contacts (for secure connection).

• Contact Material:

  • Nickel-plated steel, brass, or copper (low resistance).

• Max Current Rating: 5A–10A

3. Safety & Protection Features

• Insulation: Prevents short circuits.

• Vent holes: Allows gas escape in case of overheating.

• Locking mechanism: Secures the battery in place.

Common Uses:

• Custom battery packs (e.g., for flashlights, drones, or portable devices).

• Vape mods & DIY power banks.

• Replacement battery holders for electronics.

• Robotics & hobby projects.