Vowenx · Components & Cooling
Insulation gaskets for 18650 21700 batteries (set)
When assembling a battery pack, contact between the positive terminal and the cell body is enough to create a short circuit. These insulation pads are glued on top of each Li-ion cell and eliminate this risk, cleanly.
Note de 4.6/5 basée sur 62 avis clients.Model: 21700 solid 56pcs
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Product details
In practice, these small gaskets are the accessory that every assembler keeps on hand. They are glued onto the positive terminal of each cell before welding or clipping the pack: the ring insulates the edge and prevents the tape or nickel from touching the wrong point. No more short circuits during assembly, giving way to a clean and safe pack, provided you choose the right cell format.
Compatibility and uses
These gaskets are available for the main cylindrical Li-ion cells: 18650, 21700, 26650, 32650, and 33140. Two types are offered: solid (full surface) or hollow 0.2 mm (ring, leaving the pole accessible). They are used for assembling and repairing battery packs, electric bikes, lamps, and tools. Sold in sets according to the format. Check the diameter of your cells before ordering.
Technical specifications
- Brand: Vowenx
- Type : Li-ion battery insulation seals
- Compatible cells: 18650, 21700, 26650, 32650, 33140
- Types: Solid or hollow 0.2 mm (ring)
- Usage: Isolation of the positive pole (anti-short-circuit)
- Mounting: Adhesive
- Packaging: Set (30 to 102 pieces depending on format)
- Weight: 0.01 kg
Usage advice
The team's tip: clean the top of the cell before applying the seal, the adhesive will hold much better.
Presentation
It's the detail that prevents accidents: without a seal, a nickel strip or wire can touch the edge of the positive pole and short-circuit the cell. The insulating ring covers this area and keeps the pack clean. The hollow model leaves the contact accessible, while the full one insulates the entire face.
Key Features
- Short-circuit protection: Insulates the edge of the positive pole of the cells.
- Multiple formats: 18650, 21700, 26650, 32650, 33140.
- Solid or hollow: Ring for welding, solid for complete insulation.
- Easy installation: Adhesive, sticks in just a few seconds.
For whom?
For the DIY enthusiast who assembles or repairs battery packs (electric bike, lamp, tool). And for those who want to secure their Li-ion assemblies.
Frequently Asked Questions
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Frequently asked questions
What are these gaskets for?
To isolate the positive pole of the cells to prevent short circuits in a pack.
For which cells?
18650, 21700, 26650, 32650, and 33140, depending on the selected format.
What is the difference between solid and hollow?
The hollow (ring) leaves the contact accessible for soldering; the solid one insulates the entire face.
How are they installed?
They are adhesive: you stick them on top of the cell.
How many are there?
From 30 to 102 pieces per lot, depending on the format.
Are they useful for repair?
Yes, to properly reassemble a pack after cell replacement.
