Lithium Battery Insulation Pads 18650 21700 26650 32650
Lithium Battery Insulation Pads 18650 21700 26650 32650
Lithium Battery Electrode Insulation Pads – Self-Adhesive Safety Gaskets
Keep your lithium battery assemblies safe and reliable with these precision-cut insulation pads. Made from high-quality barley paper, these self-adhesive hollow insulation ring gaskets provide dependable electrical isolation between electrode layers — ideal for DIY battery packs, EV modules, and industrial energy storage systems.
Key Features
- Safe Insulation Material: Crafted from premium barley paper that is non-toxic and flame-retardant, meeting strict safety standards for energy storage applications.
- Wide Compatibility: Designed to work with 18650, 21700, 26650, and 32650 lithium battery cells across 6 size configurations (1–6 groups), suitable for compact battery cells, EV modules, and industrial power systems.
- Easy Peel-and-Place Installation: Pre-cut electrode sheets simplify assembly — just peel off the backing and place the pad between electrode layers. No tools required.
- High Temperature & Pressure Resistance: Withstands extreme temperature fluctuations from -40°C to +150°C and mechanical stress, helping to prevent short circuits and thermal runaway in demanding environments.
- Extends Battery Life: Consistent electrode insulation helps improve energy density and overall battery safety, extending the working life of your battery system.
Specifications
| Material | Barley Paper |
| Color | Green |
| Temperature Range | -40°C to +150°C |
| Compatible Batteries | 18650, 21700, 26650, 32650 Lithium Cells |
| Configurations | 1-group (~1.8×1.8 cm), 2-group (~3.6×1.8 cm), 3-group (~5.5×1.8 cm), 4-group (~7.2×1.8 cm), 5-group (~9.1×1.8 cm), 6-group (~11×1.8 cm) |
| Pieces per Sheet | 1-unit: 30 pcs | 2-unit: 15 pcs | 3–6 unit: 10 pcs each |
| Package Includes | 1 × Sheet of Insulation Pads |
| Country of Origin | Made in China |
Compatible Applications
- DIY lithium battery pack assembly
- Electric vehicle (EV) battery modules
- Solar energy storage systems
- Industrial power systems
- Portable power stations
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Which lithium battery sizes are compatible with these insulation pads?
A: These electrode insulation pads are specifically designed for 18650, 21700, 26650, and 32650 cylindrical lithium battery cells, covering the most common sizes used in DIY battery packs, EV modules, and energy storage systems.
Q: How do I install the self-adhesive insulation pads?
A: Installation is simple — each pad features a peel-and-stick backing. Just remove the adhesive liner and press the insulation gasket firmly between the electrode layers of your battery assembly. No additional tools or adhesives are needed.
Q: What temperature range can these insulation pads withstand?
A: These barley paper insulation pads are rated for a temperature range of -40°C to +150°C, making them suitable for use in demanding environments including electric vehicles, outdoor energy storage, and industrial applications.
Q: How many pads are included per sheet?
A: The quantity per sheet varies by configuration: the 1-unit size includes 30 pieces per sheet, the 2-unit size includes 15 pieces per sheet, and the 3-unit through 6-unit sizes each include 10 pieces per sheet.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.