--- product_id: 805840678 title: "1-Pack 21700 Battery Holder Kit, DIY Energy Storage Bracket, Tool-Free Assembly, PC+ABS Fireproof Case, M3 Copper Screws, Supports 1S8P, 2S4P, 4S2P, 8S1P (2x4 Slot, Batteries Not Included)" brand: "bistook" price: "€ 39.07" currency: EUR in_stock: true category: "Bistook" url: https://www.desertcart.es/products/805840678-1-pack-21700-battery-holder-kit-diy-energy-storage-bracket store_origin: ES region: Spain --- # 2x4 modular slots for 21700 batteries V0-rated fireproof PC+ABS housing Tool-free assembly with M3 copper screws 1-Pack 21700 Battery Holder Kit, DIY Energy Storage Bracket, Tool-Free Assembly, PC+ABS Fireproof Case, M3 Copper Screws, Supports 1S8P, 2S4P, 4S2P, 8S1P (2x4 Slot, Batteries Not Included) **Brand:** bistook **Price:** € 39.07 **Availability:** ✅ In Stock ## Summary > 🔌 Power your projects with plug-and-play precision! ## Quick Answers - **What is this?** 1-Pack 21700 Battery Holder Kit, DIY Energy Storage Bracket, Tool-Free Assembly, PC+ABS Fireproof Case, M3 Copper Screws, Supports 1S8P, 2S4P, 4S2P, 8S1P (2x4 Slot, Batteries Not Included) by bistook - **How much does it cost?** € 39.07 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/805840678-1-pack-21700-battery-holder-kit-diy-energy-storage-bracket) ## Best For - bistook enthusiasts ## Why This Product - Trusted bistook brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Durable, fireproof PC+ABS case ensures heat resistance and long-term reliability - • **Effortless Assembly:** No welding needed—secure your pack with simple screw connections - • **Premium Conductivity:** M3 pure copper contacts minimize resistance for efficient energy flow - • **DIY-Ready & Expandable:** Quickly build, modify, or scale your battery packs for any project - • **Modular Power Flexibility:** Configure 1S8P to 8S1P setups for tailored voltage & capacity ## Overview This 1-pack 21700 battery holder kit features two 2x4 modular slots designed for flat-top lithium batteries, supporting multiple wiring configurations from 3.7V to 29.6V. Its tool-free assembly uses M3 copper screws for low-resistance connections, housed in a durable, V0-rated fireproof PC+ABS case. Ideal for DIY energy storage, solar setups, and portable power solutions, it offers flexible, safe, and expandable battery management without soldering. ## Description Upgrade your DIY energy storage solutions with this 1-pack modular 21700 battery holder, designed for flat-top lithium batteries. The tool-free assembly design enables quick configuration changes without welding, making it ideal for temporary or experimental setups. 🔹 Supports Multiple Configurations – 1S8P (3.7V), 2S4P (7.4V), 4S2P (14.8V), 8S1P (29.6V) Modular expansion – easily combine multiple holders for larger capacity. 🔹 Tool-Free Assembly & M3 Copper Conductors – No welding required! The M3 copper screws ensure stable conductivity, while the secure slot mechanism keeps your battery pack firmly in place. 🔹 Durable PC+ABS Fireproof Housing (V0 Rated) – Made from high-strength PC+ABS plastic, offering heat resistance and durability, ensuring long-term safety. 🔹 Perfect for DIY Energy Projects – Compatible with portable power banks, solar storage, RC applications, and off-grid power solutions. The modular design allows easy assembly, disassembly, and reconfiguration. Package Includes: ✔ 1x 21700 Battery Holder (2x4 slot each) ✔ M3 Copper Conductors & Screws Set ## Features - 【1-Pack DIY 21700 Battery Holders】 Includes two modular storage brackets (2x4 slot each), designed for flat-top 21700 lithium batteries, allowing flexible configuration for energy storage and power applications. - 【Tool-Free Assembly - No Welding Required】 Features a screw-based connection system with M3 pure copper contacts, ensuring low internal resistance for efficient power transfer, eliminating the need for soldering. - 【Customizable Battery Configurations】 Supports multiple wiring setups: 1S8P (3.7V), 2S4P (7.4V), 4S2P (14.8V), 8S1P (29.6V) Easily expand capacity by connecting multiple holders together. - 【Durable PC+ABS Fireproof Housing (V0 Rated)】 Made from high-strength PC+ABS plastic, ensuring excellent durability, heat resistance, and safety for extended use. - 【Wide Application & Reusable Design】 Ideal for portable power banks, solar storage, experimental energy setups, and custom battery packs. The modular design allows quick assembly, modification, and disassembly. ## Images ![1-Pack 21700 Battery Holder Kit, DIY Energy Storage Bracket, Tool-Free Assembly, PC+ABS Fireproof Case, M3 Copper Screws, Supports 1S8P, 2S4P, 4S2P, 8S1P (2x4 Slot, Batteries Not Included) - Image 1](https://m.media-amazon.com/images/I/71wVAVry-HL.jpg) --- ## 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.es/products/805840678-1-pack-21700-battery-holder-kit-diy-energy-storage-bracket](https://www.desertcart.es/products/805840678-1-pack-21700-battery-holder-kit-diy-energy-storage-bracket) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-05-24*