Empty 21700 Cell for Spot Welding Practice - 10 pack
Roll over image to zoom in Click on image to zoom
Empty 21700 Cell for Spot Welding Practice - 10 pack
18650BatteryStore

Empty 21700 Cell for Spot Welding Practice - 10 pack

$7.00
Stock:
Sold out

We Ship Worldwide

Please Contact Us
for a Custom Shipping Quote.

Description

Empty 21700 Cell for Spot Welding Practice – 10 Pack

Overview

The Empty 21700 Cell for Spot Welding Practice is a dedicated training tool designed for individuals and professionals looking to hone their spot welding skills. These non-functional, uncharged, and unfilled battery shells accurately mimic real 21700 lithium-ion cells in size and structure, making them perfect for practice before working with live cells.

This 10-pack set is ideal for battery builders, engineers, and hobbyists who want to improve welding accuracy, refine their techniques, and test battery pack configurations without the risks associated with real lithium-ion batteries.

Key Features

Realistic Dimensions & Structure: Matches standard 21700 battery size for true-to-life welding practice.
Safe & Non-Functional: Contains no active chemicals or charge, eliminating explosion or fire risks.
Perfect for Skill Development: Ideal for practicing nickel strip attachment and refining welding settings.
Durable Design: Constructed from high-quality metal casings to withstand multiple practice welds.
10-Pack for Extended Use: Multiple cells allow for repeated practice and different welding setups.

Specifications

Specification Details
Product Type Empty 21700 Battery Shells for Spot Welding Practice
Quantity 10 Cells per Pack
Battery Type Dummy (Non-Functional)
Nominal Voltage 0V (No charge, no active chemicals)
Diameter 21.0mm
Length 70.0mm
Weight ~5g per cell
Material Metal casing with standard battery structure
Safety No risk of explosion, fire, or chemical leakage

Applications

The Empty 21700 Cell for Spot Welding Practice is widely used for:

Spot Welding Training – Perfect for hobbyists and professionals learning battery assembly techniques.
Battery Pack Prototyping – Used for testing layouts before using real lithium-ion cells.
Testing Nickel Strip Attachments – Allows users to experiment with different welding parameters.
DIY Battery Building Practice – Helps refine welding precision and technique before working with live cells.
Workshops & Training Sessions – Ideal for educational purposes and professional skill development.

Safety Guidelines & Warnings

IMPORTANT NOTICE ️
These empty 21700 cells are non-functional and contain no active lithium-ion components. However, proper handling is still required to ensure safe and effective welding practice.

General Safety Guidelines

Use only for spot welding practice—not suitable for real battery applications.
Ensure proper ventilation while welding to avoid inhaling fumes from nickel strips.
Always wear protective gear when practicing spot welding to prevent burns or injuries.
Use a suitable spot welder with proper settings to avoid damage to the cell casings.
Dispose of used practice cells properly after extensive use to prevent sharp metal edges.
Store in a dry, cool environment to maintain the integrity of the metal casing.

Prohibited Uses & Handling

DO NOT attempt to charge these cells—they contain no lithium chemistry.
DO NOT use these cells in any electronic devices or battery packs.
DO NOT expose to excessive heat, fire, or extreme environments.
DO NOT attempt to drill, puncture, or open the metal casing.
DO NOT reuse extensively damaged cells, as they may no longer represent real-world conditions.

User Responsibility & Risk Acknowledgment

  • The user assumes full responsibility for proper handling, training, and storage of these practice cells.
  • Misuse or mishandling may result in injury—always follow proper welding safety procedures.
  • Not intended for electrical use or charging—these are for training purposes only.
  • Usage of these practice cells is at your own risk.

By purchasing and using the Empty 21700 Cell for Spot Welding Practice – 10 Pack, you acknowledge and agree to follow all safety guidelines. Failure to comply may result in hazardous consequences.

Practice safely and refine your welding skills with confidence! ⚡

Frequently Asked Questions

Find answers to common questions about our products

Yes. All cells we sell are guaranteed authentic, Grade A, and brand new. Not reclaimed, used, or rewrapped. We also prioritize fresh manufacturing dates, so you’re not receiving cells that have been sitting around for years.

Some sellers offer Grade B cells that can have inconsistent voltage, higher internal resistance, reduced performance, or other issues. You will never receive a Grade B, reclaimed, or used cell from us.

These are sold as bare cells (no welded tabs or leads) unless the listing explicitly states otherwise.

To make pack building easier, our cells are sorted and batched for matching internal resistance, voltage, and date code, so they arrive ready to be assembled into a pack.

U.S. orders ship from Atlanta, Georgia.

For international orders outside the USA, we may ship from a different fulfillment hub depending on the product’s manufacturing location, to ensure faster and more efficient delivery.

Shipments within the USA, delivery in 1–3 days (up to 5). Expedited shipping available. International shipping varies—contact us to inquire.

Reviews

Related Products