--- product_id: 532483171 title: "18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters)" brand: "divtek" price: "€ 28.97" currency: EUR in_stock: true reviews_count: 8 category: "Divtek" url: https://www.desertcart.hr/products/532483171-18650-to-21700-battery-adapter-converter-adapter-for-21700-flashlight store_origin: HR region: Croatia --- # Copper-plated gold contacts for max conductivity Universal 18650 to 21700 fit Fire-retardant ABS material for safety 18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters) **Brand:** divtek **Price:** € 28.97 **Availability:** ✅ In Stock ## Summary > 🔌 Power smarter, not harder—convert your batteries like a pro! ## Quick Answers - **What is this?** 18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters) by divtek - **How much does it cost?** € 28.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/532483171-18650-to-21700-battery-adapter-converter-adapter-for-21700-flashlight) ## Best For - divtek enthusiasts ## Why This Product - Trusted divtek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Fire-retardant ABS construction meets industry safety standards for peace of mind. - • **Premium Conductivity:** Copper-plated gold contacts ensure efficient, reliable power transfer every time. - • **Confidence Guaranteed:** Backed by a 5-year warranty and dedicated customer support—no compromises. - • **Lightweight & Compact:** At just 0.25 oz and 2.7 inches long, it’s ultra-portable for on-the-go pros. - • **Power Up Without Upgrading:** Use your existing 18650 batteries in 21700 devices—save money and avoid waste. ## Overview The DIVTEK 18650 to 21700 Battery Adapter is a sleek, lightweight converter that lets you use your existing 18650 batteries in 21700 flashlight cases. Crafted from fire-retardant ABS with copper-plated gold contacts, it delivers safe, high-conductivity performance. Compatible with a wide range of devices, this adapter offers a cost-effective, eco-friendly solution backed by a 5-year warranty. ## Description Looking for a convenient and affordable solution to power your devices without having to buy a new type of battery? The 18650 to 21700 and 20700 Adaptor is designed to meet your needs! Made from high-quality ABS material, this black adaptor is lightweight and measures 2.76 inches(7cm) length and 0.85 inches (2.15cm) in diameter. It weighs only 0.25 ounces (6 grams), making it easy to carry around and store.This adaptor is the perfect fit for those who already have a ton of 18650 batteries and want to use them with their devices without spending a fortune on new batteries. It provides a reliable and easy-to-use solution that allows you to enjoy the same performance and reliability as specialized batteries. The copper-plated gold battery contact ensures high conductivity and durability.With our 18650 to 21700 and 20700 Adaptor, you can power up your flashlights, and other devices quickly and easily. It's compatible with a wide range of devices and comes with a 5-year warranty and our commitment to offer top-notch customer service. So, why wait? Add this adaptor to your shopping cart today and start enjoying the benefits of this cost-effective and efficient solution!Possible search keywords: 18650 battery, 21700 battery, 20700 battery, adaptor, converter, battery sleeve, battery holder, device power, flashlights, reliable, durable, high conductivity, cost-effective, lightweight, compact. ## Features - ♻️ This adapter is designed to provide greater flexibility and convenience for flashlight users ect, allowing them to utilize their existing supply of 18650 batteries without having to purchase a new 21700 battery. By simply inserting the 18650 battery into the adapter, users can enjoy the same level of performance and reliability as they would with a specialized battery. - ♻️ By choosing to use 18650 adapter, users can save both time and money by avoiding the need to purchase new 21700 batteries or dispose of their existing supply of 18650 batteries. This not only reduces waste and environmental impact but also provides a more cost-effective solution for those who already have a large collection of 18650 batteries. - ♻️ Divtek 18650 to 21700 battery sleeve is made of ABS material with fire retardant properties, and features highly conductive copper-plated gold battery contacts. - ♻️ Divtek 18650 battery tubes are professional battery adapters.Our battery sleeve is designed to provide reliable and safe performance, with high-quality materials and construction that meet industry standards for fire resistance and conductivity. Please note that the weight of this is battery adapter is about 0.25 ounces - 🔋 This 18650 to 21700 battery accessories comes with a 5-year warranty and replacement guarantee for any defects or issues. We stand behind the quality of our products and are committed to providing excellent after-sales service. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BVQXLH6R | | Brand | DIVTEK | | Built-In Media | 18650 to 21700 Battery Adapter | | Color | Black | | Connector Type | MagSafe | | Customer Reviews | 4.3 out of 5 stars 65 Reviews | | Item Dimensions | 0.85 x 0.85 x 2.7 inches | | Item Type Name | battery converter | | Item Weight | 0.21 Ounces | | Manufacturer | DIVTEK | | Mfr Part Number | Flashlight Accessories | | Model Name | 21700 battery converter - 2 | | Model Number | 2 Battery Converters | | Number of Items | 5 | | Power Source | no | | Unit Count | 2.0 Count | ## Product Details - **Brand:** DIVTEK - **Color:** Black - **Connector Type:** MagSafe - **Model Name:** 21700 battery converter - 2 - **Power Source:** no ## Images ![18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters) - Image 1](https://m.media-amazon.com/images/I/615miFDZJvL.jpg) ![18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters) - Image 2](https://m.media-amazon.com/images/I/71lgCf1+Z1L.jpg) ![18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters) - Image 3](https://m.media-amazon.com/images/I/51f3Q4XeICL.jpg) ![18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters) - Image 4](https://m.media-amazon.com/images/I/815WNt2FECL.jpg) ![18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters) - Image 5](https://m.media-amazon.com/images/I/81fjz+Xd2eL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***X on March 2, 2025* ### ⭐⭐⭐⭐ Review *by J***D on April 16, 2024* ### ⭐⭐⭐⭐⭐ Review *by J***L on August 11, 2024* ## Frequently Bought Together - 18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters) - Protect Your Power - Slimline 21700 Battery Case, Soft Durable Material - Pack of 2 (Holds 2 Batteries) - BFHB 21700 Battery Case Set 5000 mAh for Flashlight - 2 Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/532483171-18650-to-21700-battery-adapter-converter-adapter-for-21700-flashlight](https://www.desertcart.hr/products/532483171-18650-to-21700-battery-adapter-converter-adapter-for-21700-flashlight) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-19*