Optimize your custom battery builds with the 3P Battery Spacer for 21700 Cells – 21.2mm, engineered for precision alignment, enhanced safety, and efficient heat dissipation. Designed to fit most Samsung, LG, and Murata 21700 lithium-ion cells, this high-quality spacer is perfect for creating reliable and organized battery packs.
Featuring a 21.2mm inner diameter, this triple-cell configuration spacer securely holds three 21700 cells in parallel, making it ideal for DIY battery builders, electric vehicle projects, e-bike packs, power storage systems, and more.
- Perfect Fit for 21.2mm Cells: Tailored for Samsung, LG, Murata, and other similarly sized 21700 lithium-ion batteries
- Triple-Cell (3P) Design: Holds 3 cells in parallel for neat, compact, and scalable battery pack layouts
- Improved Airflow & Heat Management: Ensures adequate spacing for better cooling and overall battery safety
- Durable & Lightweight: Made from sturdy plastic for reliable, vibration-resistant performance
- Ideal for DIY & Professional Use: Great for battery pack assembly in solar, robotics, electric bikes, and more
Whether you're building high-capacity battery packs or experimenting with energy storage, this 3P 21700 battery holder spacer offers the precision and compatibility you need for safe and professional-grade results.
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⚠ Important Safety Warnings
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or for e-cigarettes, vaporizers, or similar devices.
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Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
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Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If the battery overheats, emits smoke, or swells, move it to a non-flammable surface (e.g., sand or concrete) and stop use immediately. In case of fire, use a Class D fire extinguisher or sand. Do not use water.
Disclaimer
18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.