50 PCS 21700 Fish-Paper Insulator Rings – Pure Fiber
50 PCS 21700 Fish-Paper Insulator Rings – Pure Fiber
Regular price
$3.89 USD
Regular price
$4.99 USD
Sale price
$3.89 USD
Shipping calculated at checkout.
Quantity
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50 PCS 21700 Fish-Paper Insulator Rings – Pure Fiber
A 50-pack of self-adhesive fish-paper insulator rings for the positive end of 21700 cells — peel, stick, and prevent top-cap shorts during pack assembly. No cutting, no mess.
Product Features
- Material: Pure fiber (fish paper) — high dielectric strength, heat resistant
- Single-side adhesive: peel-and-stick backing holds position under weld pressure
- Fits: Standard 21700 lithium-ion cells
- Color: Green
- Quantity: 50 rings per pack
What Is Included
- 50 × 21700 self-adhesive fish-paper insulator rings
What Is Not Included
- Battery cells
Good to Know
- Isolates the positive terminal ring to prevent shorts against the wrap or busbar.
- Ships flat in a lightweight envelope — multiple packs may ship separately.
Additional Parts and Resources
For nickel by the roll, pre-cut busbars, BMS boards, and more rebuild supplies, visit our shop RenewSpark. We also offer the RenewSpark Tools app, built to help DIY builders and professionals with battery-building calculators and utilities.
