About this item

• The 3.7 V 4500 MAh Li-ion battery pack uses a 4 parallel design for consistent voltage and continuous current output. Each 18650 cell is individually tested for capacity and impedance uniformity, ensuring stable performance for robot controllers, Arduino boards, IoT modules, and STEM learning devices that require steady power delivery.
• Certified under UN 38.3, IEC 62133, CE, and RoHS, this battery pack features built-in PTC over-current protection and a pressure-relief vent to prevent overheating or short circuits. The durable PVC outer wrap adds mechanical and moisture resistance, ensuring safe operation and long service life for laboratories and educational use.
• Containing four individual 18650 flat-top cells inside a protective case, this battery pack supports detachable use and custom assembly. No pre-soldered wires or plugs are included, ensuring safe shipping and flexible setup for DIY makers, school projects, and experiments that require customizable power solutions.
• Specifically engineered for STEM education,  programming, Arduino courses, and IoT labs, this battery enables hands-on learning about electrical energy, circuit design, and renewable power concepts. Ideal for teachers demonstrating charging principles and students exploring applied engineering skills.
• Supports CC/CV charging mode with over 500 recharge cycles and > 85% capacity retention. Comes with a protective storage box for safe carrying and organization. Professional after-sales support available via official website or online customer service for quick assistance and technical guidance.