For battery cells, review the product description for real-world current recommendations, testing notes, and application guidance. Manufacturer maximum ratings should be treated as limits, not the best target for long-term pack health.
Description
21700 PVC Heat-Shrink Battery Wraps - 10 Precut Sleeves
Refresh damaged cell sleeves or color-code a battery project with precut PVC heat-shrink tubing sized for standard 21700 cylindrical cells. Each sellable unit contains 10 individual sleeves in the selected color.
- Quantity: 10 precut sleeves
- Size: approximately 78 mm long x 36 mm wide
- Material: PVC heat-shrink film
- Wall thickness: approximately 0.08-0.10 mm
- Shrink temperature: approximately 80 degrees C
- Available colors: blue, green, clear, and red
Common uses
- Replacing torn or damaged outer sleeves on 21700 cells
- Adding electrical insulation around the cell body
- Color-coding cells during sorting and pack assembly
- Creating a clean, consistent finish for battery projects
Installation note: Remove the old outer wrap carefully without damaging the metal can or terminal insulator. Center the new sleeve and apply controlled, even heat. Do not overheat the cell, and replace any damaged positive-terminal insulation ring before use.
Safety: A PVC sleeve is only one part of proper cell insulation. Inspect the cell can, positive terminal, insulator ring, and wrap before assembly. Do not use a dented, leaking, corroded, overheated, or otherwise damaged lithium-ion cell.
Ships from Florida from DIY500AMP.COM.
Orders ship from Florida when inventory is available. Lithium-ion cells require proper handling, protected packs, correct chargers, and safe storage. Do not solder directly to battery terminals.
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Let customers speak for us
Everything is great 100%recommended fast and
Everything is great 100%recommended fast and professional
Daniel Kammerdiener
One of my cell orders was short one cell
One of my cell orders was short one cell. When I went to send a text to the customer contact (this is rare and awesome way to reach out), the reply on a national holiday came within 15 min. That level of customer service is incredible, like family. I really appreciate that!
Joseph Krienert
Wow, these cells are great!
I purchased some of these tabless cells to try on my 1S 3" HD Toothpick drone build, and, albeit a bit heavy for 1S, it flies pretty well. Not a freestyle monster, but an endurance beast with decent send. These cells shrug off the demands of a BETAFPV Matrix HD AIO flight controller/12A ESC and some 1202.5 11000KV motors. I'm getting 15+ minutes of speedy flight time from a single cell trying not to go below 3.2V, and about 20+ minutes cruising. Love these cells and will definitely buy more when time comes, only from DIY500AMP, who are terrific!
VN in AZ
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Exceptional store specializing in lithium-ion cells with lightning-fast shipping, often same-day. Outstanding customer service with knowledgeable, responsive owner. Competitive pricing on high-quality, authentic batteries. Customers praise reliable products, p...
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