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Ni-MH (Nickel-Metal Hydride) batteries are widely used in various applications, including consumer electronics, electric vehicles, and power tools. To ensure their safety, durability, and functionality, PET (Polyethylene Terephthalate) shrink wrap is commonly employed as a protective covering. This material offers several advantages that make it an ideal choice for battery insulation and packaging.
Key Features of PET Shrink Wrap
Thermal Stability: PET shrink wrap provides excellent heat resistance, which is crucial for Ni-MH batteries that can generate significant heat during charging and discharging cycles. The material maintains its integrity under high temperatures, ensuring long-term protection.
Durability: PET is known for its toughness and resistance to wear and tear. It protects the battery cells from physical damage, such as scratches or impacts, which could compromise performance or safety.
Electrical Insulation: The shrink wrap acts as an effective insulator, preventing short circuits by isolating the battery's conductive components from external elements.
Custom Fit: Heat-shrinkable PET wraps conform tightly to the shape of the battery pack when heat is applied. This ensures a secure fit and minimizes the risk of loose or uneven coverage.
Chemical Resistance: PET shrink wrap resists exposure to chemicals and moisture, safeguarding the batteries from environmental factors that could degrade their performance.
Applications
PET shrink wrap is used in various configurations of Ni-MH batteries, including cylindrical cells (18650, 21700, 32650, 4680, AA or AAA), rectangular packs, and custom designs for specific devices like RC cars or medical equipment. It is also a preferred choice for assembling multi-cell battery packs, where individual cells are grouped together and wrapped for added protection.
Advantages in Battery Assembly
During battery assembly, PET shrink wrap simplifies the process by providing a reliable and cost-effective solution for securing cells together. Its transparency allows manufacturers to inspect the underlying components without removing the wrap, ensuring quality control.
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