Ultra-Compact 3.7V 40mAh Li-Polymer Battery – Precision Power for Miniature Electronics
Lightweight 401018 lithium-ion battery with high energy density, ideal for space-sensitive applications like wireless earbuds, hearing aids, and IoT devices. Premium-grade polymer materials ensure stable voltage output and extended cycle life, backed by built-in PCB protection against overcharge and short circuits. Engineered with ultra-thin layered cells (0.4mm) for seamless integration into slim wearable tech, delivering reliable performance in temperatures from -20°C to 60°C. Perfect for OEM bulk orders – wholesale pricing available for custom branding and bulk procurement with fast global shipping.