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{"title":"Type-C Rechargeable Battery Case with 1.5V 600mWh Li-ion for AAA\/AA Batteries","imgUrl":"https:\/\/img.chinax.com\/nimg\/af\/ee\/665474793bebebc41ea17241c92d-200x200-1\/type_c_rechargeable_battery_case_with_1_5v_600mwh_li_ion_for_aaa_2faa_batteries_and_1500_cycles.jpg","attrs":{"Brand Name":"XWELL","Model Number":"Stainless Steel Battery Case","Certification":"CE","Place of Origin":"China"}}
{"title":"Zero-Weld Metal Box for Battery Pack - High-Quality Battery Raw Material","imgUrl":"https:\/\/img.chinax.com\/nimg\/38\/89\/6dcb8334686b297207fbdd3747fa-200x200-1\/zero_weld_metal_box_for_battery_pack_high_quality_battery_raw_material.jpg","attrs":{"Brand Name":"XWELL","Model Number":"Battery Pack Case","Certification":"CE","Place of Origin":"China"}}
{"title":"Zero-Weld Metal Box with 0-Weld Integrated Stretch Molding and IP54\/IP65","imgUrl":"https:\/\/img.chinax.com\/nimg\/25\/a6\/3960eeb4f0388e1972de829d1f7d-200x200-1\/zero_weld_metal_box_with_0_weld_integrated_stretch_molding_and_ip54_2fip65_waterproof_26_dustproof_for_customizable_battery_pack_c.jpg","attrs":{"Brand Name":"XWELL","Model Number":"Battery Pack Case","Certification":"CE","Place of Origin":"China"}}
Blue Cross-Linked PE Heat Shrink Tube for 21700 26650 Battery Cell Insulation
Product Overview
This blue cross-linked polyethylene (PE) heat shrink tube is engineered for 21700 and 26650 large-format cylindrical battery cell sleeve insulation. Cross-linked PE delivers superior chemical resistance, mechanical strength, and thermal stability compared to standard PVC tubing. The 50mm flat width accommodates larger cell diameters while the 2:1 shrink ratio ensures tight, wrinkle-free conformity after 80℃ heat activation. Blue color provides professional appearance and easy visual identification in multi-format battery production environments.
Key Features
Cross-Linked PE Material: Superior chemical resistance and mechanical strength compared to PVC, with 120℃ short-term temperature resistance for demanding battery manufacturing environments
2:1 Shrink Ratio: Consistent 50% transverse shrinkage ensures tight, uniform coverage over 21700 and 26650 cell casings without wrinkles or air pockets after 80℃ activation
50mm Flat Width: Optimized for 21700 (21mm diameter) and 26650 (26mm diameter) cells, providing full circumferential coverage with minimal material overlap
100m Continuous Roll: Extended roll length reduces changeover frequency on automated sleeving lines, improving production throughput
40%-50% Transverse Shrinkage: Reliable, consistent shrinkage within specification ensures predictable post-shrink dimensions for quality-controlled cell assembly
Applications
21700 cylindrical cell PVC-free sleeve insulation for EV battery packs
26650 large-format cell casing insulation for energy storage systems
High-temperature battery assembly lines requiring 120℃ rated sleeving material
Compatible with automated heat shrink tube applicators and hot-air shrinking tunnels operating at 80℃
Specifications
Shrink Temperature
80℃
Temperature Range
-40℃ ~ 105℃
Temperature Resistance Grade
120℃ (Short-term Maximum)
Transverse Shrinkage
40% - 50%
Longitudinal Shrinkage
8% - 15%
Color
Blue
Material
Cross-Linked Polyethylene (PE)
Flat Width
50mm
Length
100m per Roll
Shrink Ratio
2:1 (50% Transverse)
Dielectric Strength
≥20kV/mm
Flame Retardancy
UL94 VW-1
Packaging
Roll Stock
Why Choose Us
Factory Direct Supply: Direct manufacturer pricing on battery insulation materials with no middleman markups, competitive rates for volume production orders.
Consistent Quality Control: Every batch undergoes shrink ratio verification at 80℃ activation temperature and 120℃ thermal endurance testing, with ISO 9001:2015 certified production processes.
Fast Global Delivery: 5-8 working days processing with export-grade moisture-proof packaging. Worldwide shipping to battery manufacturers via reliable logistics partners.
Flexible Order Quantity: Minimum 1 roll for sample testing and process validation. Volume pricing for bulk orders with 10,000 rolls monthly supply capacity.
Technical Support: Application engineering team provides shrink tunnel parameter recommendations and integration guidance for automated battery production lines.
Certified Materials: All products meet international battery manufacturing standards with full traceability and material certification documentation available upon request.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
2016
Total Annual:
3000000-5000000
Employee Number:
50~100
Ecer Certification:
Verified Supplier
GUANGDONG XWELL TECHNOLOGY CO., LTD. is a high-tech enterprise specializing in intelligent equipment design, production and sales, providing mechanical engineering technology design and consulting services, electronic engineering design and consulting services. XWELL's core team was established ... GUANGDONG XWELL TECHNOLOGY CO., LTD. is a high-tech enterprise specializing in intelligent equipment design, production and sales, providing mechanical engineering technology design and consulting services, electronic engineering design and consulting services. XWELL's core team was established ...