SKU: 98850618244

18650 21700 32650 Li-ion Battery Insulation Gasket | Barley Paper Cell Hollow Insulating Pads

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Description

18650 21700 32650 Li-ion Battery Insulation Gasket | Barley Paper Cell Hollow Insulating PadsKeep your battery packs safe and organized with these precision cut insulation gaskets. Designed for 18650, 21700, and 32650 lithium ion cells, these barley paper pads create a reliable barrier between the positive and negative terminals. They help prevent short circuits, reduce vibration, and improve the overall durability of your battery assembly. Each gasket is made from durable barley paper with a self adhesive backing for quick and secure

Keep your battery packs safe and organized with these precision-cut insulation gaskets. Designed for 18650, 21700, and 32650 lithium-ion cells, these barley paper pads create a reliable barrier between the positive and negative terminals. They help prevent short circuits, reduce vibration, and improve the overall durability of your battery assembly.

Each gasket is made from durable barley paper with a self-adhesive backing for quick and secure placement. The hollow ring design fits snugly over the battery terminal, providing consistent insulation without adding bulk. Whether you are building a custom power bank, an electric bike battery, or a solar storage pack, these pads offer a simple way to improve safety and performance.

The material provides good heat resistance and electrical insulation, making it suitable for high-drain applications. The adhesive layer holds firmly during assembly and remains stable under normal operating conditions. These pads are a practical choice for hobbyists, repair technicians, and anyone working on DIY battery projects.

With multiple size options in one pack, you can work on different battery types without needing separate orders. The lightweight design keeps your battery pack compact while adding an essential layer of protection.

Key Features and Benefits

- Hollow ring shape that fits over the battery terminal to create a clean insulation barrier between cells

  • Self-adhesive backing that makes installation fast and secure without extra glue
  • Barley paper material that provides good heat resistance and electrical insulation for safer battery packs
  • Compatible with 18650, 21700, and 32650 lithium-ion cells for flexible use across different projects
  • Thin and lightweight design that does not add extra bulk to your battery assembly

Who Is This For

- DIY electronics enthusiasts building custom battery packs for power tools, flashlights, or portable devices

  • Repair technicians replacing damaged insulation in laptops, e-bikes, or battery banks
  • Hobbyists working on solar energy storage or electric vehicle battery modules
  • Workshops and makerspaces that need reliable insulating components for prototyping

Usage Scenario

Mark was assembling a 12V battery pack for his portable camping power station. He had 12 cells to connect in series and needed to make sure no short circuits would occur between the positive and negative terminals. He peeled off the backing from each barley paper gasket, placed it over the top of each cell, and pressed down firmly. The adhesive held the pad in place while he spot-welded the nickel strips. The build was clean, safe, and ready for testing in under 20 minutes.

Micro Comparison

Compared to plastic or rubber insulators, barley paper gaskets offer a thinner profile and better heat resistance, which is important in high-drain battery packs. They are also easier to apply because of the pre-applied adhesive, unlike loose cardboard rings that can shift during assembly. For most DIY and repair projects, these pads provide a good balance of insulation, ease of use, and cost.

Specifications

Material: Barley Paper

Shape: Ring Gasket

Compatible Battery Sizes: 18650, 21700, 32650

Adhesive: Yes (self-adhesive backing)

Color: Green

Package Includes

- 100 x Insulation Gasket Pads (assorted sizes for 18650, 21700, and 32650 batteries)

Why You Will Love It

These gaskets give you peace of mind when building or repairing battery packs. The adhesive backing saves time, and the barley paper material handles heat well. With 100 pieces in the pack, you will have plenty on hand for multiple projects.

Questions and Answers

Question: Are these pads reusable after removal?

Answer: No, the adhesive backing is designed for one-time use. Once removed, the pad may lose its stickiness and should be replaced with a new one.

Question: Will these fit flat-top 18650 batteries?

Answer: Yes, the hollow ring design works with both flat-top and button-top 18650 batteries.

Question: Can I use these for 26650 batteries?

Answer: These pads are specifically cut for 18650, 21700, and 32650 sizes. They may not fit 26650 cells properly.

Question: Do I need to apply extra glue?

Answer: No, the pads come with a self-adhesive backing. Just peel and stick.

Question: Are these pads safe for high-discharge batteries?

Answer: Yes, the barley paper material offers good heat resistance and electrical insulation, making it suitable for high-drain applications.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98850618244

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PQ
Natrona Heights, US
★★★★★ 5
Works great once assembled
Color: Black
I had an experienced handyman attach the wheels, and even he was confused since the instructions are poor. So allow yourself some extra time to assemble the wheels. However, once attached and placed upright, the wheels are smooth and its very easy to position. And it folds up into a small footprint just as advertised. Looks great. No issues with quality.
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Reviewed in the United States on March 16, 2026
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MN
Waukegan, US
★★★★★ 4
Good Product Missing Parts
Color: Gey
Great product, but they did not send all of the parts with the first shipment
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Reviewed in the United States on December 30, 2025
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webmonkee
Phoenix, US
★★★★★ 5
Game-changer for me
Color: Light Grey
I’ve had a basement office for a while. I share a big room with my work bench. I’ve always just had a curtain hanging between the two, but after a promotion, I decided it was time for something more professional looking. This divider is awesome, and move-able when I need the space for my workbench activities. The frame is very sturdy - impressively sturdy even. The felt walls are thick enough to take even heavy duty tacks. There are three things that could make it even better, but none of them are enough to knock a star off my review, because this is truly a quality piece of office gear. 1. Put a magnetic strip on the top bars so that you could hang a little heavier items or add magnetic hooks. I plan to buy some magnetic tape to allow for this. 2. Allow the panels to be locked at the top. The locking wheels do a decent job of keeping everything in place, but if you could also lock the top of the frames, it would greatly increase stability. Note that it is already quite stable, but the top locks would make it very similar to actual cubicle walls. 3. Put a swivel caster on the middle wheel bars. This would allow you to configure the panels and the “feet” at angles other than 90 degrees when desired. Again, these suggestions would take a fantastic item and put it into 6-star rarefied air. It is truly a great product as-is, but I would gladly pay another $100 for this item if it had these additional features.
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Reviewed in the United States on February 12, 2025
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Moonpie
Port Orchard, US
★★★★★ 5
Strongbird room dividers
Color: Gey
Great product. Easy to assemble, heavy duty used to hold scenery during church Christmas play. Use to divide classroom space. We plan to buy a 2nd divider soon
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Reviewed in the United States on April 15, 2025
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Kellie Landrum
Lowell, US
★★★★★ 1
Flimsy and cheap screws
Screws snapped off when I tried to drill htem in and no matter how I try to get the leg pieces in they will NOT stay. Falls apart, screws snap off, the middle axle holes arent even lined up so you cant install one of the pieces in the first place.
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Reviewed in the United States on May 30, 2025

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