Streamline your battery pack assembly with the 2P Battery Spacer for 21700 Cells – 21.2mm, designed to securely hold two 21700 lithium-ion cells in parallel. This high-precision spacer is ideal for use with Samsung, LG, Murata, and other 21.2mm diameter 21700 batteries, offering optimal alignment, stability, and airflow for your custom battery builds.
Perfect for both DIY enthusiasts and professionals, this dual-cell spacer simplifies the creation of efficient and organized Li-ion battery packs for applications including e-bikes, power tools, solar storage systems, and portable electronics.
- Precision Fit for 21.2mm 21700 Cells: Compatible with Samsung, LG, Murata, and similar brands
- 2-Cell Parallel Configuration: Keeps two cells securely aligned in parallel for neat and safe builds
- Enhanced Cooling and Safety: Promotes airflow between cells to reduce heat buildup during use
- Durable Lightweight Material: Made from impact-resistant plastic for long-lasting performance
- Versatile Use: Suitable for assembling battery packs for EVs, scooters, RC hobby projects, and more
Build with confidence using this 2P 21700 lithium battery holder spacer, a must-have accessory for anyone working with custom battery solutions or energy storage systems.
Your title
⚠ 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.
-
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.
-
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.