Super Small Li-Ion Battery Charging Protection Board | 3.7V–4.2V | 18650 | Ultra Mini Type-C Charger

In this video, we explore the Super Small Li-Ion Battery Charging Protection Board designed for 3.7V (4.2V full charge) single-cell lithium batteries. This Type-C charging board is perfect for 18650 batteries, DIY electronics, keyboards, IoT projects, and portable devices. 🔋 Features: Supports 3.7V Li-Ion / Li-Po batteries Full charge voltage: 4.2V Type-C USB charging Built-in short-circuit, over-charge & over-discharge protection Ultra-small size, ideal for compact projects Suitable for keyboard battery charging & DIY power solutions 🛠️ Applications: Wireless / mechanical keyboard charging DIY power banks Bluetooth & IoT devices Portable electronics projects ⚠️ Note: This board supports single-cell batteries only. Do not connect batteries in series. 🛠️📌👍🔔 📌 Buy on Aliexpress: 🔗 Mini 3.7V Charger Board: https://s.click.aliexpress.com/e/_c4aliZn1 🔗 Mini 3.7V Charger Board: https://s.click.aliexpress.com/e/_c4bY1Omj 🔗 Mini 3.7V Charger Board: https://s.click.aliexpress.com/e/_c4OhTpkb 📌 Buy on Amazon: 🔗 Mini 3.7V Charger Board: https://amzn.to/4aXBxXg 🔗 Mini 3.7V Charger Board: https://amzn.to/4b2BzNL 🔗 Mini 3.7V Charger Board: https://amzn.to/4sEColZ 📌 Amazon Finds & Tools We Recommend 🛒 https://c8ke.com/yellowpurple 💬 LIKE | COMMENT | SHARE | SUBSCRIBE 🔥 Please support the channel by subscribing: 🔔 https://www.youtube.com/channel/UCNqYc-ojesF6AbXwiWdZbeg?sub_confirmation=1 ━━━━━━━━━━━━━━━━━━ 📺 Watch More DIY & Tech Videos: 🔹 Extend WiFi Range with Another Router (No Cable): https://www.youtube.com/watch?v=_EpCRg5ggEs 🔹 Program ATtiny85 with Arduino Uno: https://www.youtube.com/watch?v=BL1gI4AcMOA 🔹 TP-Link to Netgear Wireless Sharing (WDS Mode): https://www.youtube.com/watch?v=9CS3xfIpK90 🔹 Sokoban Level 11 Solution: https://www.youtube.com/watch?v=xvu6r5_4_T4 🔹 Arduino Ultrasonic Radar System DIY: https://www.youtube.com/watch?v=l8PhAIYB8Us&t=34s 🔹 Connect Two Routers Wirelessly with WDS: https://www.youtube.com/watch?v=X-LLl9OIXK8 🔹 Extend WiFi with Another Router (Easy Guide): https://www.youtube.com/watch?v=wkyKX2ifPFo ━━━━━━━━━━━━━━━━━━ 📩 Contact for Inquiries: 📧 Email: EmailForViewers@gmail.com ━━━━━━━━━━━━━━━━━━ 🌟 Thank you for your support! 🌟