Bistook 21700 Battery Holder, 1-Slot DIY Case with Protection Caps, No Soldering Brass Contacts, Transparent Cover, Modular Storage for Lithium

Bistook 21700 Battery Holder, 1-Slot DIY Case with Protection Caps, No Soldering Brass Contacts, Transparent Cover, Modular Storage for Lithium

🔹 【Turn Old Batteries into New Power】 Don’t let idle 21700 batteries go to waste! This modular battery holder transforms them into functional DIY power packs for various electronics. 🔹 【No Soldering Required, Easy Assembly】 The screw-in brass contacts provide a secure connection without the need for soldering, making it perfect for DIY enthusiasts and engineers. 🔹 【Safe & Protective Design】 The included transparent cover and side caps protect against short circuits, dust, and external damage, ensuring safe battery handling. 🔹 【Modular & Expandable】 Easily connect multiple holders for custom voltage and capacity setups. Ideal for battery packs, electronics projects, and custom energy solutions. 🔹 【Package Includes & Compatibility】 Comes with 6PCS 21700 Battery Holders with side covers. Compatible with 21700 flat-top lithium batteries. Not designed for button-top or protected batteries. 🔋 Transform Your Batteries into Functional Power Solutions! Have unused 21700 flat-top lithium batteries lying around? The Bistook Modular Battery Holder lets you repurpose them into custom power solutions for your electronics, DIY energy projects, and experimental builds. 🌟 Key Features: ✔ No Soldering Required – Screw-in brass contacts ensure a strong, stable connection. ✔ Protective Side Covers – Prevent short circuits and external damage. ✔ Expandable & Modular – Create custom battery packs with ease. ✔ Transparent Design – Easily monitor battery status while in use. ✔ Durable PC+ABS Construction – Built to last for long-term applications. 📦 What’s in the Box? 6 x 21700 Battery Holders (with Protection Caps & Transparent Covers) User Manual 🔹 Compatibility Notice: Designed for flat-top 21700 lithium batteries only. Not suitable for button-top or protected batteries.